RFL9745E VF Intertrip channel - IT Managed Technology … · · 2017-12-18E2.04 18 Jan 07 AH Alarm NO and NC identification corrected. System software upgrade procedure clarified

www.rflcomms.co.uk

RFL9745 Application Note Issue E4.02 Page 2 of 91

Record of Changes

Issue Date Author Reason for change

Draft 2 Jan 96 SF Draft for comments

Draft 2 21 May 96 SF Following review with Ian Hall

Draft 3 20 Jun 96 PW Revised after EA Meeting, Dual circuit added

A 20 Jul 96 SF/PW All Comments Incorporated

D1 –

D5

2 Dec 96 SF Changes following comments from EA and field trials

D6 8 Jun 98 SF Analogue over Digital added. EA approved logics upgraded to Issue C

E1 09 Feb 06 AH 9745 VF and Digital combined into one document. Updated to include

current module options & VF wideband comms module.

E2 29 Dec 06 AH Format updated. Audio comms J6 setting updated.

Upgrades section added.

E2.01 03 Apr 07 AH Typographical correction p47; 51

E2.02 13 Jun 07 AH Typographical correction p8; Std Freq.Table 2 added p31

Detail added to wideband jumper settings p12

E2.03 26 July 07 AH CPU J7 position amended in line with RFL USA update. JMP1 added

E2.04 18 Jan 07 AH Alarm NO and NC identification corrected. System software upgrade

procedure clarified.

E3.01 08 Apr 08 AH Update for CPU 107335-1 and System Software 7.0. Additional build

codes added. Section 12 updated

E3.02 24 Apr 08 AH Typographical correction p6

E3.03 09 May 08 AH Lockup Inhibit connections updated. Typo corrections p55,59,60

E3.04 22 Oct 08 AH Part No. for BEM added. Data added for C37.94 SM module. Details

added for FSU. Hidden parameters data expanded. Standard logics

added to list.

E3.05 30 Oct 08 AH Section nos. corrected. Driver module jumper position clarified.

Operational characteristics of SDTTII.1C and 3C clarified.

E3.06 06 Nov 09 AH Page 13 ‘3.10’ corrected to read ‘4.10’

E3.07 08 Jan 10 AH Section 12.2 expanded. References to System software 7.0 amended to

7.# to take account of on-going minor upgrades

E3.08 03 Feb 11 AH Details for Logics EDIIII.1C & .4C; and SDIIII1E & .4E incorporated,

the latter replacing SDTTII.1C and 3C

E4.01 02 Aug 12 AH High Speed Relay I/O module added. Input specifications updated in

line with current hardware. Alarm functions for EDBIAI.1C amended

System Software refs updated to differentiate 7.0 and 7.2. Details of

“Y” series Logics included.

E4.02 15 Jan 13 AH Downloading instructions for SOE added

E4.03 04 Mar 13 AH Module allocation clarified on Logic Scheme Details

Notice

The Information in this application note is proprietary and confidential to RFL Communications plc.

Any reproduction or distribution of this application note, in whole or part, is expressly prohibited,

unless written permission is given by RFL Communications plc.

The information in this application note does not constitute a warranty of performance. RFL

Communications reserves the right to revise this application note and make changes to its content. We

assume no liability for losses incurred as a result of out of date or incorrect information contained in

this application note.


Table of Contents

1 INTRODUCTION ....................................................................................................................................................... 5

2 EQUIPMENT BUILD CODES AND MODULE PART NOS. ................................................................................ 6

2.1 RFL EQUIPMENT BUILD CODES ................................................................................................................................. 6 2.2 MODULE PART NUMBERS ............................................................................................................................................ 7

3 LOGIC SCHEMES...................................................................................................................................................... 9

3.1 LOGIC SCHEME DESIGNATION CODES .......................................................................................................................... 9 3.2 SUMMARY OF STANDARD LOGIC SCHEMES ........................................................................................................... 9

4 HARDWARE ............................................................................................................................................................. 10

4.1 POWER SUPPLY MODULE .......................................................................................................................................... 11 4.2 CPU MODULE .......................................................................................................................................................... 11 4.3 DRIVER MODULE ...................................................................................................................................................... 12 4.4 DISPLAY MODULE .................................................................................................................................................... 12 4.5 AUDIO COMMUNICATIONS MODULES (NARROWBAND AND WIDEBAND) .................................................................... 13 4.6 DIGITAL COMMUNICATIONS MODULE AND DIGITAL INTERFACES .............................................................................. 14 4.7 INPUT / OUTPUT MODULE ......................................................................................................................................... 17 4.8 RS232 PORTS. ......................................................................................................................................................... 21 4.9 IRIG B INTERFACE .................................................................................................................................................. 21 4.10 X.21 COMMUNICATIONS WITH FIBRE SERVICE UNIT ........................................................................................... 22

5 9745VF – FUNCTIONALITY AND SETTINGS .................................................................................................... 23

5.1 PRINCIPLES OF OPERATION ....................................................................................................................................... 23 5.2 SINGLE AND DUAL 4-WIRE COMMUNICATIONS LINKS ................................................................................................ 25 5.3 TRANSMIT LEVEL SETTING ....................................................................................................................................... 27 5.4 RECEIVE LEVEL AND RECEIVE ALARM LEVEL SETTING ............................................................................................ 29 5.5 FREQUENCY SETTING ............................................................................................................................................... 29 5.6 OTHER PARAMETER SETTINGS .................................................................................................................................. 33

6 9745 DIGITAL – FUNCTIONALITY AND SETTINGS ....................................................................................... 35

6.1 OPERATE TIMES ....................................................................................................................................................... 35 6.2 DIGITAL LOGIC SCHEMES .......................................................................................................................................... 35 6.3 COMMUNICATION OPTIONS ....................................................................................................................................... 35 6.4 DIGITAL PARAMETER SETTINGS ............................................................................................................................... 36

7 PROGRAMMING THE RFL 9745 .......................................................................................................................... 38

7.1 FILE TYPES ............................................................................................................................................................... 38 7.2 STANDARD LOGIC SCHEMES .................................................................................................................................... 39 7.3 APRIL LITE .............................................................................................................................................................. 41

8 INSTALLATION GUIDELINES ............................................................................................................................. 44

9 OPERATION, MAINTENANCE AND FAULT FINDING ................................................................................... 44

10 VF LOGIC SCHEMES AND DEFAULT PARAMETER SETTINGS ................................................................. 45

10.1 ESMAII.1C AND ESMBII.1C ............................................................................................................................ 45 10.2 ESMUII.1C ....................................................................................................................................................... 49 10.3 ECIIII.1C AND ECIIII.3C SINGLE 4-WIRE .......................................................................................................... 53 10.4 ECIIII.1C AND ECIIII.3C DUAL 4-WIRE ............................................................................................................. 57 10.5 YSMAII.2C AND YSMBII.2C ........................................................................................................................... 61 10.6 YSMUII.2C ....................................................................................................................................................... 65 10.7 YEIIII.2C SINGLE 4-WIRE .................................................................................................................................. 69

11 DIGITAL LOGIC SCHEMES AND DEFAULT PARAMETER SETTINGS ..................................................... 73

11.1 EDBIAI.1C AND EDBIAI.4C ............................................................................................................................ 73 11.2 EDIIII.1C AND EDIIII.4C .................................................................................................................................. 76 11.3 SDIIII.1E AND SDIIII.4E ................................................................................................................................... 79 11.3 YDBIAI.1E AND YDBIAI.2E ............................................................................................................................ 84

12 SYSTEM MAINTENANCE AND UPGRADES ..................................................................................................... 88

12.1 UPGRADE/RELOAD SYSTEM SOFTWARE ON A HEALTHY 9745 .............................................................................. 88 12.2 UPLOAD/RELOAD SYSTEM SOFTWARE ON A CRASHED 9745 ................................................................................. 89 12.3 UPGRADE 9745VF NARROWBAND TO WIDEBAND ............................................................................................... 90 12.4 UPGRADE 9745VF TO 9745 DIGITAL .................................................................................................................. 90 12.5 UPGRADE BATTERY BACKED CPU USING BEM (BATTERY ELIMINATION MODULE) ............................................. 90


Associated Documents

The following documents are to be used in conjunction with this Application Note:

RFL 9745 Product information:

http://www.rflcomms.co.uk/downloads/products/rfl9745.pdf

RFL 9745 Manual MCD9745R-011 (5.2MB) 1st October 2007:

http://www.rflelect.com/pdf_files/june08_manuals/MCD9745R-015(4-7-08)_Complete.pdf

C37.94 Fibre Service Unit Product Information:

http://www.rflcomms.co.uk/downloads/products/C37.94FSU.pdf

C37.94 Rack based solutions

http://www.rflcomms.co.uk/downloads/products/C37%2094-1.001.pdf

April Lite download

Go to <intranet.rflcomms.co.uk/Downloads/April_Lite_2-1.zip>

RFL Communications plc 9745 Site commissioning record sheet

WARNINGS

1. The installation, operation and maintenance of this equipment should only be carried out by qualified

persons.

2. The equipment described in this application note contains high voltages. Always disconnect from the

power source before opening covers or removing modules.

3. The 9745 may be equipped with digital communications interface modules that have fibre optic

emitters, which use invisible laser light. If the fibre is disconnected or broken the radiation may be

exposed and may cause permanent damage to eyesight or blindness. NEVER look directly into the light

beam, and be careful not to shine the light against any reflective surface.

http://www.rflcomms.co.uk/downloads/products/rfl9745.pdf

http://www.rflelect.com/pdf%20files/MCD9745R-011(6-1-06).pdf

http://www.rflcomms.co.uk/downloads/products/C37.94FSU.pdf

http://www.rflcomms.co.uk/downloads/products/C37%2094-1.001.pdf


1 Introduction

The RFL9745 teleprotection equipment offers both VF (voice frequency) and digital solutions for power

utility protection schemes. To ensure dependable and secure operation in the UK electrical supply industry a

limited number of configurations have been approved by the Electricity Association (EA) – now reformed as

the ENA. This application note is limited to providing technical guidance on the hardware configuration and

settings to achieve functional performance for intertripping, acceleration or blocking functions using the

RFL9745 in EA approved configurations. These principles are also applicable in general terms to other

configurations, although the details may vary.

The 9745 is available in two basic versions, ‘VF’ designed for communication over 4-wire VF circuits (i.e.

audio or analogue circuits) and ‘Digital’ designed for use over various digital circuits. Other than the

communications modules and interfaces, all other hardware is identical for the two versions. All information

in this application note relates to either unit unless specifically noted. Should more detailed information be

required then reference should be made to the current RFL9745 Manual, or contact RFL Communications plc.

Application engineers should acquaint themselves with the logic scheme and settings required to provide

satisfactory operation of each application.

RFL9745 VF The 9745 VF teleprotection equipment includes four separate, programmable tone transceivers operating on

FSK (frequency shift keying) principals within audio frequencies. The logic scheme programmed into the

9745 VF will determine whether the channels operate as acceleration, blocking or intertripping functions. The

unit can also utilize channel one as an internal modem facility. This application note describes the VF logic

schemes offered for both single-circuit and dual-circuit applications.

RFL9745 Digital The RFL9745 Digital teleprotection equipment communicates at 64kbps over an electrical or fibre-optic

digital communications channel. It communicates a data word which has the capacity of up to seven

independent functions. The EA approved digital logic scheme uses four of these functions to provide a

universal configuration comprising blocking, acceleration and two intertrip functions.

As utilities increasingly adopt communications backbones that provide network switching

functionality, a variant of the digital logic scheme has been issued that is optimised for use on these

networks (SDIIII.1E); details may be found in Sections 9 and 11.2.

New Information Details of the Wideband Audio Communications module released in January 2006, and the new CPU module

introduced early 2008 are included.

Important Notes: 1. A Wideband Audio Communications module cannot be fitted to a 9745 configured for a narrowband

module audio communications module without upgrading the settings, and if applicable, the system

software. Refer to Section 12.2 for the upgrade procedure.

2. CPU part no. 107335-1 operates only with system software Version 7.0 and up. This system software

is not compatible with previous CPU’s. Refer to Section 7.1 for further details.


2 Equipment Build Codes and Module Part Nos.

2.1 RFL Equipment Build Codes

RFL Build Codes (order codes) are determined from the following charts and are marked on the chassis at

time of manufacture. The possibility of subsequent module changes means it is necessary when maintaining

equipment to physically check the installed modules.

Build Codes for all 9745 Digital and for 9745 VF post Jan 2006

Format: TSH * # # $ $ 0 0

TSH Base system

*

Code letter for comms:

Audio comms: N – Four channel audio Digital comms – Electrical interface: A - RS449

B - G703 Co-directional C - G703 contra-directional Q - E1 X - X21

Digital comms – Fibre optic interface:

E F G H J P

- 850nm MM direct fibre (2km nom.) - 1300nm MM direct fibre (20km nom.) - 1300nm SM LED direct fibre (40km nom.) - 1300nm SM laser direct fibre (80km nom.) - 1550nm SM laser direct fibre (140km nom.) - C37.94 short haul fibre

1st #

Main Power Supply (LHS) 4 - 19 – 36Vdc power supply 6 - 38 – 150Vdc power supply 7 - 170 – 300Vdc power supply

2nd

# Redundant Power Supply (RHS) 0 if not fitted, otherwise insert code as for 1

st #

1st $

I/O module A (top): 48/125Vdc 24Vdc 250Vdc

- Module not fitted 0 0 0

- Solid State module (4x SS outputs) 1 A 2

- Relay/SS module (1 x SS, 3 x relay outputs) 5 B 6

- HS Relay module (4x High speed relay outputs) G E J

2nd

$

I/O module B (bottom), use codes as for I/O module A (1st$)

0 0 Options not fitted

Build Codes for 9745 VF pre Jan 2006

Format: VPC 3 # # $ $ 0 0

VPC Base system

3 4 channel audio

1st # Main Power Supply (LHS), (use codes as above)

2nd

# Redundant Power Supply (RHS), (use codes as above)

1st $ I/O module A (top), (use codes as above)

2nd

$ I/O module B (bottom), (use codes as above)

0 0 Options not fitted


2.2 Module part numbers

Part numbers of standard system modules

Module Part No. Comments

Power supply 105905 38 – 150Vdc – Standard wide range

Power supply 105905-1 19 – 37Vdc – Optional

Power supply 105930 170 – 300Vdc – Optional

Audio Communications module Wideband (post Jan 2006)

105920-1 4 tone transceivers. Wideband (300 – 4000Hz). Note: A wideband module cannot be used as a direct replacement for a narrowband module.

Audio Communications module Narrowband (pre Jan 2006)

105040-20 4 tone transceivers. Narrowband (300 – 3400Hz).

Digital Communications module 105060-2 Digital interface module also required. See following table

CPU (post early 2008) 107335-1 System Software 7.0 up to ~ Dec09; 7.2 Jan10 on Capacitor

backed RAM

CPU (post Jan 2006) 107330-1 System Software 5.2 and earlier only CPU (pre Jan 2006) 107330-20

CPU (pre mid 2002) 105025-20 Lithium battery backed RAM.

BEM 107315-1 Battery Elimination Module for 105025-20 CPU

Driver module 105030-1

Display module 105110 Includes display and pushbuttons

SS I/O module 48/125Vdc 105005-21 4 solid state outputs

Relay/SS I/O module 48/125Vdc 105010-21 1 solid state output plus 3 relay outputs

HS Relay I/O module 48/125Vdc 105995-1 4 high speed relay outputs

SS I/O module 24Vdc 105005-4 4 solid state outputs

EA approval has not been

sought for these

Relay/SS I/O module 24Vdc 105010-4 1 solid state o/p plus 3 relay o/ps

HS Relay I/O module 24Vdc 105995-4 4 high speed relay outputs

SS I/O module 250Vdc 105005-3 4 solid state outputs

Relay/SS I/O module 250Vdc 105010-3 1 solid state o/p plus 3 relay o/ps

HS Relay I/O module 250Vdc 105995-3 4 high speed relay outputs


2.2 Module part numbers cont’d.

Part Nos. of Digital Interface modules (Further details – Section 4.6)

Electrical Interface Part No. Data Rate

RS-449 105065-1 56/64 kbps

G703 Contra-direction 105065-2 64kbps

X21 105065-10 64kbps

G703 Co-directional 105065-11 64kbps

E1 (75ohm connection) 107320

2.048 Mbps

E1 (120ohm connection) 2.048 Mbps

Fibre Optic Interface Part No. Notes

Fibre Short Haul C37.94 (MM) 107310 850nm Use with suitable converter (FSU or

SHFI module) or IMUX module

Fibre Short Haul C37.94 (SM) 107340 1300nm Only use with suitable IMUX module

Direct Fibre 850nm LED MM 105065-5 2km nominal (see Section 4.6)

Direct Fibre 1300nm LED MM 105065-6 20km nominal (see Section 4.6)

Direct Fibre 1300nm LED SM 105065-7 40km nominal (see Section 4.6)

Direct Fibre 1300nm Laser SM 105065-8 80km nominal (see Section 4.6)

Direct Fibre 1550nm Laser SM 105065-9 140km nominal (see Section 4.6)


3 Logic Schemes

3.1 Logic Scheme designation codes

Each 9745 requires a logic scheme to be loaded, selected according to the operational requirements of the

protection scheme. The logic ensures that the outputs will only respond when an appropriate channel, or

function, has received a valid trip signal from the remote end identified as being free from noise or error.

The logic scheme designation code is made up as follows:-

EX1234.nY

3.2 Summary of Standard Logic Schemes

Logic Codes and file references for all Logics available as standard are listed in Section 7.2

Summary of Available Logics

Comms Functions available Current Issue

Notes

“E” Series Logics – Generic ENA approved Logic Schemes

VF Modem, dual channel intertrip, acceleration, blocking

C Single or dual PSU

Digital Intertrip, blocking, acceleration C Single or dual PSU

“S” Series Logics – Specific Logic Schemes

Digital Four Intertrips E

Optimised logic for use with SDH (and similar) switching networks (not within, but compliant with the original ENA approval) Single or dual PSU

Other customer specific VF & Digital logics have been developed for specific schemes (ask for details)

“Y” Series Logics – ‘YEDL’ Logic Schemes

VF Modem, dual channel intertrip, acceleration, blocking

C As Generic ENA VF Logics with YEDL standard alarms

Digital Intertrip, blocking, acceleration E

Optimised logic for use with SDH (and similar) switching networks (not within, but compliant with the original ENA approval), with YEDL standard alarms

“E” = ENA (EA) generic approved scheme “S” = Specific logics for specific schemes “Y” = Specific for YEDL schemes

“S” = Use on Single 4-wire circuit (VF) “C” or “E” = Configurable for use on Dual or Single 4-wire circuit (VF) “D” = Digital

Issue letter for Logic scheme

Minor variant of the logic scheme, e.g. single / dual power supply. See relevant logic application note

Function code, for channels 1-4 respectively “M” = Modem (VF only) “A” = Acceleration “B” = Blocking “II” = Intertrip (Uses dual VF channels used for single intertrip). Output latches on comms fail. “I” = Intertrip (Uses single channel). Output latches on comms fail. “T” = Intertrip (Uses single channel). Output does not latch on comms fail) “U” = Unallocated channel


4 Hardware

The RFL 9745 comprises a “3U” high chassis, 372mm deep. A hinged front cover gives access to the three

system modules as detailed in the diagram below.

The 9745VF and 9745 Digital both use the same modules with the exception of the communications module.

The 9745VF uses a single Audio Comms module in the top slot; the 9745 digital uses a digital comms module

in the top slot, in conjunction with a digital interface unit inserted from the rear in the top slot.

The front drop down panel carries a 2 x 16 character LCD display, a number of push buttons, and LED

indicators for local interrogation. The display module is mounted on the rear of the drop down cover.

The I/O modules are inserted from the rear of the enclosure and are enclosed in the chassis within their own

RF- protected sub-enclosure. All power, I/O and communications circuits are connected at the rear of the

chassis.

Power supply Module (PSU)

Communications module (Audio or Digital)

Space for redundant

PSU

CPU

Driver module

9745 chassis, front view – Location of system modules (cover removed)

9745 chassis, rear view – VF Unit shown

1 9 10 16 17 25 25 25

IRIG-B

TBA

TBB 1 9 10 16 17 25 25 25

1 8

TB2 – VF Line Connections

Location for Redundant PSU TBA – I/O Module A

TBB – I/O Module B (Not used with logic scheme ESMUII)

Power Supply Connections

Earth Stud


4.1 Power Supply module

The standard wide range power supply module is rated 38 – 150Vdc (750 – 325mA typical), suitable for all

nominal 48Vdc and 110Vdc battery backed supplies.

Alternative power supplies rated 24Vdc and 250Vdc are available.

A redundant power supply may be fitted; this will require a specific dual PSU logic scheme to be loaded.

Connections: Connect incoming power to TB1- 9 (+) and TB1-10 (–). Positive or negative grounded supplies

are acceptable.

Earth Connection: The earth stud must be connected to the relevant safety earth; the recommended minimum

cable cross-section is 4mm2. A separate signal earth is not required.

Power Supply module connections (i.e. on the RHS when viewed from the rear)

Terminal No. All Configurations

TB1 - 9 + Power Supply +

TB1 - 10 – Power Supply –

Earth Stud Earth / Ground connection must be connected

Terminals on the Redundant Power Supply module (on LHS when viewed from rear) are numbered

identically.

4.2 CPU module

The CPU module occupies the front centre slot. All software, including the system software, logic file and

parameters, are stored on the CPU in flash memory. Refer to Section 7 for details of software versions and file

references.

4.2.1 CPU module 105025-20 (pre mid 2002)

RFL9745 CPUs manufactured prior to mid 2002 are fitted with a Lithium battery which is used to store the

real time clock and Sequence of Events (SOE) log in the event of an external power supply failure.

Batteries must be replaced every 2 years. A Battery Elimination Module (BEM) is available comprising a

daughter board fitted with capacitors that may be retro-fitted to any CPU currently fitted with a battery. Refer

to Section 12.4.

4.2.2 CPU modules 107330-1, 107330-20 (post mid 2002) and 107335-1 (post early 2008)

These RFL9745 CPUs manufactured are fitted with capacitors which support the real time clock and the SOE

log for a period of 2 weeks in the event of external power supply failure. All system files, logic files and

parameters are not lost in the event of extended periods of external power loss.


4.2.3 Jumper settings for CPU modules

Jumper settings for CPU module

CPU module 105025-20

J1 J6 J7

Correct position Fitted Fitted A

CPU modules 107330-1; 107330-20; 107335-1

J1 J2 J6 J7

Correct position Fitted Normal Fitted Retain Factory Setting

A – 2k x 8 EEROM B – 8k x 8 EEROM

For safety, J2 should be set to discharge for 5 minutes before removing CPU board. Note: this will cause all SOE data and time to be lost. Ensure it is fitted to normal on completion.

4.3 Driver module

The Driver module occupies the front lower slot.

Jumper settings for Driver module

Jumper J2

Correct position NORM / B

4.4 Display module

The Display module is fitted to the rear of the front cover. There are 4 red TX (transmit) LEDs and 4 red RX

(receive) LEDs. These illuminate red when a trip is being passed over the communications link; they do not

indicate the status of the inputs or outputs. The LCD screen is used for status indication. The pushbuttons may

be used for limited interrogation and fault finding purposes, however front panel tests are disabled on all EA

approved logic schemes.

The LED marked ‘Alarm’ illuminates green when the system is healthy. It illuminates red when any alarm is

present.

There are no jumper settings on the Display module.


4.5 Audio Communications modules (Narrowband and Wideband)

The Audio Communications module occupies the front top slot; it carries the tone transceivers and the VF line

connections which extend through the rear of the casing. This module interfaces as standard to either single or

dual 4-wire VF communications circuits depending on the logic scheme installed. Each VF transmit or receive

line pair is presented as a 600 ohm balanced connection. It is recommended that VF circuit should be run in a

cable incorporating twisted pairs with each pair separated and having its own drain wire. The drain wires

should be collectively grounded to the equipment cubicle earth at the point of entry to the cubicle.

Until January 2006 the Narrowband Audio Communications module was standard equipment (300 – 3400Hz).

Subsequent to this date the Wideband Audio Communications module became the standard equipment (300 –

4000Hz). This extended capability remains limited in the UK by the specification of the communications link;

refer to Section 5.5.

The connections and jumper settings are as detailed in the following tables:

Ensure connections, jumpers and parameters are correct for Single or Dual 4-wire comms

VF (audio) line connections (TB2)

Terminal No.

VF Single 4-wire (Narrow & Wideband)

VF Dual 4-wire (Narrow & Wideband)

Circuit A & B

TB2 - 1 Rx Rx B

TB2 - 2 Rx Rx B

TB2 - 3 Tx Tx B

TB2 - 4 Tx Tx B

TB2 - 5 Rx A

TB2 - 6 Rx A

TB2 - 7 Tx A

TB2 - 8 Tx A

TB2 VF Line Terminal Block

1 2 3 4 5 6 7 8

Jumper settings for Audio Communications modules

Narrowband Audio Communications module

JMP1

Underside J9 J10* J11 J12

Single 4W A A A A B

Dual 4W A B B B B

Wideband Audio Communications module

JMP1

Underside J1 & J2 J3 J5 J10* J11 J12

J13 & J14

J15 & J16

Single 4W A 50Hz A 4W A 4W RUN IN Fitted

Dual 4W A 50Hz B 4W B 4W RUN IN Fitted

*Parameter 061 must be set in accordance with J10 jumper position (refer to Section 5.6.3)


4.6 Digital Communications module and Digital Interfaces

The location of the Digital Communications module is identical to the Audio Communications module with

the exception that in place of the VF line connections at the rear, a Digital Interface module is fitted, which is

withdrawn from the rear of the unit. This is equipped with a suitable connector or optical interface. The

following table indicates the range of available Digital Interface modules:

Details of Digital Interface modules

Electrical Connector on module Data Rate

RS-449 DB37 male 56/64 kbps

G703 Contra-Directional

DB25 male 64kbps

X21 DB15 male 64kbps

G703 Co-Directional

DB15 male 64kbps

E1 – used at 75ohm

BNC 75ohm 2.048 Mbps


DB15 male 2.048 Mbps

Fibre Connector Output Level Receiver Sensitivity

System Gain

Typical Transmission

Distance

Short Haul C37.94 MM

ST

-11 to -18dBm into 62.5/125 μm fibre

-32dBm 14dB 1km

Short Haul C37.94 SM *

-19.5 to -23.5dBm into 9/125μm fibre

-38dBm 15.5dB 10km

850 MM LED -18dBm -46dBm 28dB 2km

1300 MM LED -13dBm -39dBm 26dB 20km

1300 SM LED -17dBm -39dBm 22dB 40km

1300 SM Laser 0dBm -39dBm 39dB 80km

1550 SM Laser -3dBm -39dBm 36dB 140km

MM = Multimode SM = Singlemode *Only for use with IMUX modules

It is recommended that all digital circuits should be run in shielded twisted pair cable to minimize crosstalk

and interference from external sources. All cabling to the 75ohm E1 interface must utilize 75ohm co-axial

cable.

The Short Haul C37.94 fibre interface may be used for direct connection to an equivalent interface on a

multiplexer or network interface. If the multiplexer or network interface is unable to accept a direct C37.94

connection, RFL a converter will be required e.g. the RFL FSU (Fibre Service Unit) with a range of electrical

interfaces for stand alone applications, or the RFL SHFI module (Short Haul Fibre Interface) that may be

installed in the UMUX multiplexer chassis.

Note: For details of X.21 communications using the RFL FSU (Fibre Service Unit), refer to Section 4.10


The following tables indicate:

Jumper settings on the Digital Communications module

Jumper settings on each Digital Interface module

Connector pinout for X21 interface

Jumper settings on Digital Comms module

Jumper J1 J2 J3 J4 J5

Correct position B B 64K A A

Note on J6 from RFL manual:

Position A = internal timing: Position B = loop timing • G.703 interface, J6 = B. • RS-449, X.21 and Short Haul Fibre Optic, J6 can be set to A or B. • All Direct Fibre Optic interfaces, J6 at one end must be set to A and the other end must be set to B. J6 = A when a fibre loop-back is used. • E1 Interface Adaptor (107320), J6 should be left in position A and the timing mode (loop or internal) must be selected by using SW1-4 on the E1 Interface Adapter. Refer to paragraph 3.6.5.5 for the location of SW1-4 and instructions on how to set it. J6 is set to position B at the factory for all interfaces except the E1 Interface Adapter.

J6 is set according to the Digital Interface module fitted.

Digital Interface module fitted

J6 Position

RS-449 A or B (B is default)

G703 Contra-Directional B

X21 A or B (B is default)

G703 Co-Directional B

E1 A

Short Haul Fibre C37.94 MM

A or B (B is default)

All other fibre interface modules

Set to A one end & B at opposite end of link

Correct Position for JMP1 (underside of module)

Watchdog A


Jumper settings on Digital Interface modules

Interface Module

Jumper settings

Setting range Default settings

Electrical

RS-449 No jumpers N/A

G703 Contra-Directional

Jmp J1 – A / B Jmp J2 – A / B

A B

X21 Jmp J1 – Norm / Inv Jmp J2 – Norm / Inv

Norm Norm

G703 Co-Directional

Jmp J1 (Octet timing) – Fitted Y / N

Not fitted


J6 – G/U J7 – G/U SW1 (1-1 LHS; 1-10 RHS) SW2 – 75 / 120ohm Refer to RFL manual for further details Section 3.6.5.5

J6 – U J7 – U

SW2 – 75 SW1 settings UUUXDDUUUD

1-4 (X = timing) set Up for loop; Down for Internal). E1 – used at

120ohm

J6 – G J7 – U

SW2 – 120

Fibre

Short Haul C37.94 MM

No settings

WARNING!

Digital Comms interfaces that have fibre optic emitters use a

laser light that produces invisible radiation. If the fibre is

disconnected or broken the radiation may be exposed and

may cause permanent damage to eyesight or blindness.

NEVER look directly into the light beam, and be careful not

to shine the light against any reflective surface.

850 MM LED

1300 MM LED

1300 SM LED

1300 SM Laser

1550 SM Laser

X21 Connector Pinout:

Refer to Section 3.5.2.1 in RFL Manual for pinout of all other connectors.

Pinout for the X21 connector

Signal Pin no.

Chassis 1

TxD A 2

TxD B 9

RxD A 4

RxD B 11

Signal Timing A 6

Signal Timing B 13

Ground 8

Control A 3

Control B 10

The maximum cable run for X21 interface is 10m within a substation environment.


4.7 Input / Output module The RFL9745 may be fitted with either one or two I/O modules. When fitted to the rear middle slot it is

designated module ‘A’, and when fitted to the rear botton slot it is designated module ‘B’. For full

functionality all logic schemes in this application note require both I/O modules to be fitted except ESMUII

which only requires only module ‘A’ to be fitted. (Note: Equipment with logic requiring two I/O modules will

operate with one I/O module omitted. In this case the inputs and outputs connected to that module will not be

available.) Utilisation, function and connections of inputs and outputs is dependent on the logic scheme

installed. See Section 10 (VF schemes) and Section 11 (Digital schemes).

4.7.1 Module types

There are three types of I/O module available for EA approved schemes:

I/O module versions

Type Details

Relay/SS 4 inputs (jumper selectable on 48 / 125 Vdc modules) 1 solid state output (Output 1), 3 relay outputs (Outputs 3 – 4) 3 alarm relay (ANC) outputs

Solid State 4 inputs (jumper selectable on 48 / 125 Vdc modules) 4 solid state outputs 3 alarm relay (ANC) outputs

High Speed Relay

4 inputs (jumper selectable on 48 / 125 Vdc modules) 4 high speed relay outputs 3 alarm relay (ANC) outputs

4.7.2 Inputs

Input Specifications

Nominal Input Volts

Minimum Operate Voltage

Current At Nominal Volts

Max Voltage

Nominal Input

Impedance

24 Vdc 14.6 Vdc 8.8 mA 60 Vdc

48 Vdc 31 Vdc 5.8 mA 60 Vdc 18k ohm *

125 Vdc 75 Vdc 4.6 mA 150 Vdc 39k ohm *

250 Vdc 155 Vdc 5.3 mA 280 Vdc

* Note: The jumper setting can be verified by measuring the nominal input impedance with a digital multimeter. (Ensure there is no standing voltage on the input)


4.7.3 Outputs

Output Specifications

Output Device

Pick-up Time

Minimum Current Rating

Maximum Current Rating Open Circuit Volts (Max) 100mS 1 minute Continuous

Solid State 0 ms 20 mA 10A 2A 1A 150V

(48/125V units)

Relay 7 ms – 30A – 5A 300Vdc

High Speed Relay

5 ms – 30A – 5A 300Vdc

Use of solid state outputs

Note: Ensure at least 20mA is drawn in the “on” state. If a device is connected with low-current draw, fit a bleed resistor (RL) to ensure that in excess of 20mA is drawn – see diagram. Typical resistor values for RL are:

4.7K ohms, 5W for a nom. 110V supply 2.5K ohms, 2W for a nom. 48V supply

V. BATT +

RELAY

RELAY

V. BATT +

V. BATT -

V. BATT -

V. BATT -

V. BATT +

4A/

4B

3A/

3B

2A/

2B

1A/

1B

D R

1 E

S L

T A

A Y

N

C

E

RL

V. BATT +

V. BATT -

4A/

4B

3A/

3B

2A/

2B

1A/

1B

SOLID-STATE I/O

MODULE,2 DUAL POLE

OUTPUTS

SOLID-STATE I/O

MODULE,4 SINGLE

POLE OUTPUTS

AS

4A/B

AS

4A/B

RL = LOAD RESISTOR TO GIVE > 20 mA.

+ +

_

_

+

-

+

-

+

-

+

-


4.7.4 Alarm (Annunciator) outputs

Each RFL9745 I/O module provides three alarm relay outputs, each presented as a “Form C” (changeover)

contact rated as below. Note that the alarm relays are energised when the 9745 is powered and alarms are

healthy. If a closing contact is required when an alarm is present, connect to the NC contact.

Alarm output specification

Maximum Output Current: 1A continuous.

Maximum Breaking Current: 1A non-inductive @ 125Vdc. 0.25A non-inductive @ 280Vdc.

Maximum Open Circuit Voltage: 280V dc

The functionality of the alarm outputs is dependent on the logic scheme loaded into the 9745. These are

detailed within the logic scheme descriptions – refer to section 10 (VF) and section 11 (Digital)

The following table describes the events that cause the various alarms to be initiated and the effect on the unit:

Alarm Conditions, Cause and Effect Note: The combination of alarms to Comms Urgent, Comms Non-urgent and Equipment Fail as detailed in this Table are specific to the generic ‘E’ Series Logics. ‘Y’ Series logics and other customised logics may have alarms allocated differently.

Alarm

Condition

Caused By (VF)

Caused By (Digital)

Effect On Unit

Operation

Comms Urgent

VF signal(s) on the tone receiver out of dynamic range, and/or address exchange fail, and/or checkback test fail (if modem used)

Communications link failure due to one or more of the following causes: clock outside tolerance, frame errors, major or minor data errors, checkback (address check) test fail, BER alarm (Note on SDIIII.*E only, BER Alarm is a non-urgent alarm)

Activates “outage” signal. Blocks output commands while active. Alarms after 5 seconds.

Comms Non- Urgent

VF signal low (>-6db below Rx level) and/or excess channel delay, if modem used.

Channel delay alarm, (Also BER alarm on SDIIII.*E only)

Alarms after pre-set time (5 seconds)

Equipment Fail

An internal fault has occurred This includes power supply, comms processor, internal bus error,

An internal fault has occurred. This includes power supply, CPU, Comms Processor, internal bus error, or Tx Fail (Fibre only).

Alarms after pre-set time (5 seconds).

Address Fail

Address exchange error

Alarms/Blocks output after pre-set time (5 seconds)


4.7.5 Cascade lockup inhibit input

Associated with some logic schemes is a ‘cascade lockup inhibit’ input. This input is designed for use when a

number of RFL9745 units are interconnected, e.g. triangulated scheme, and the overall scheme requires

cascaded intertrip. The cascade lockup inhibit is designed to prevent a lockup of the intertrip where the scheme

is a ring. The node where the trip originated should be hardwired to operate the cascade lockup inhibit input.

When the cascade lockup inhibit is energised it prevents the local trip outputs from operating, and hence

prevents the lockup. It should be noted that the cascade lockup inhibit functionality can also be achieved using

external relays and timers, and in such circumstances the cascade lockup inhibit input is not required to be

used.

This input has the same physical characteristics as the trip inputs as described above.

4.7.6 I/O module connection details

Input, Output and Alarm (ANC) connections

I/O module ‘A’ I/O module ‘B’

Term. No. Term. No.

TBA -1 + OUT 1A Output 1A

TBB -1 + OUT 1B Output 1B

TBA -2 – TBB -2 –



TBA -4 – TBB -4 –

TBA -5 + IN 1A Input 1A

TBB -5 + IN 1B Input 1B

TBA -6 – TBB -6 –



TBA -8 – TBB -8 –



TBA -10 – TBB -10 –


TBB -11 + IN 4A Input 4B

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Alarm 1A

TBB -13 Com

ANC 1B Alarm 1B TBA -14 NC TBB -14 NC

TBA -15 NO TBB -15 NO

TBA -16 Com

ANC 2A Alarm 2A

TBB -16 Com



TBA -19 Com

ANC 3A Alarm 2A

TBB -19 Com





TBA -23 – TBB -23 –



TBA -25 – TBB -25 –

The functionality of the inputs and outputs is determined by the logic scheme. Refer to Section 10 (for VF) and

Section 11 (for Digital)


4.8 RS232 Ports.

The RFL9745 has two RS232 ports for the purpose of local or remote management.

The front port is used for local communication during on-site commissioning.

The rear port is designed for remote communications via a modem or other suitable link, such as the RFL9660

Substation Switch.

The front port always takes priority.

RS232 connections and pin-out details

Configuration Front port (DCE) Rear port (DTE)

RXD 2 2

TXD 3 3

DTR 4 4

Common 5 5

Carrier Detect Not used Not used

RTS Not used 7

CTS Not used 8

Unit Connector Type DB9 female connector DB9 male connector

Cable required for local PC connection

Straight Serial Crossed serial (null modem)

using pins 2,3,5

Serial port settings are:

Data Rate: Baud rate up to 19200. Default 9600. (The 9745 must be sat to the same baud rate using the front

panel pushbuttons as follows – Level, Enter Up/down to required setting, Enter to confirm setting.)

Format: 8 Data bits: 1 Stop bit: No parity: Flow control (handshaking) XOn/XOff.

If a permanent connection is to be made to the rear port, it is recommended that a fibre-optic link be employed

in conjunction with a suitable converter (e.g. RFL Fibre Remote unit)

4.9 IRIG B Interface

The IRIG-B input connection provides a 1ms resolution real time clock input deriver from a GPS clock..

When a logic scheme with a modem is used, time data is transferred to the remote end. Where both local and

remote 9745’s are connected to IRIG B sources, it allows accurate measurements of channel delay in each

direction to be made. The connection to the RFL9745 is with a BNC 75ohm connector.

The 9745 must be loaded with software version 5.2 or higher.

For correct operation the peak-to-peak value of the ‘off’ bit must be less than 1Vdc.

Refer to RFL manual section 3.5.6 for further details.


4.10 X.21 Communications with Fibre Service Unit

Comms Block Diagram using C37.94 and FSU (Fibre Service Unit)

X.21 Cable Connections

Signal DB-15 Pin No.

Female

Cable length 5m

max

DB-15 Pin No.

Male

TxD A 2 2

TxD B 9 9

RxD A 4 4

RxD B 11 11

Signal Timing A 6 6

Signal Timing B 13 13

Control A 3 3

Control B 10 10

Signal Ground 8 8

Chassis Ground 1 1

Screen Shell Shell

X.21 FSU (107460-4)

DIP Switch setting Power Connections (38 – 150Vdc)

Switch Setting Function Terminal Function

SW1-1 Down

64kb/s data rate

TB1-1 Positive supply SW1-2 Down SW1-3 Down

TB1-3 Negative supply SW1-4 Down SW1-5 Down Tx clock normal (up = inverted clock)

TB1-5

Ground SW1-6 Down Rx clock normal (up = inverted clock)

SW1-7 Up Normal Data (up = inverted data) TB1-6

SW1-8 Down Not used with X.21 FSU

Tx & Rx Multimode Fibre Optic ST Connectors both ends Max Length 1km

DB-15F X.21Cable DB-15M

9745GD with C37.94 Interface

X.21 Network Terminating Unit

FSU

RFL FSU

Part No. 107460-4

UP


5 9745VF – Functionality and Settings

Refer to Section 10 for details of functionality, connections and settings for each logic scheme.

5.1 Principles of operation

5.1.1 Method of operation, operate times, dependability and security The 9745 VF has four channels, and operates on the principal of Frequency Shift Keying (FSK). An audio

(VF) tone is transmitted continuously at a set frequency from unit ‘A’ to unit ‘B’ on each channel – this is the

guard tone. When a trip input is received at unit ‘A’ a new frequency is transmitted – the trip frequency – and

once the frequency change has been validated at unit B, its output operates.

VF Logic schemes issue “C” and above are optimised to provide satisfactory operation over VF circuits fitted

with A to D converters as well as over conventional analogue or pilot circuits.

The tripping characteristics of a system are effected by:-

Equipment characteristics e.g. processing time of 9745 equipment and timer settings

Line delays, noise and other issues external to the 9745

The effects of these are illustrated in the following tables extracted from the original type-test reports:

Nominal VF operate times Times include input de-bounce time of 2ms & pre-trip timer of 4.5ms

Frequency Shift (Hz) Operate Time

(Solid state output) Operate Time (Relay output)

75 16.4 ms 20.5 ms

150 12.0 ms 16.0 ms

Dependability for each frequency shift at various signal / noise ratios

Frequency shift (Hz)

Signal / Noise Ratio = 0dB Pmc < 1 in 100

Signal / Noise Ratio = 3dB Pmc < 1 in 100

Suitability for Application

T15 T25 T40 T15 T25 T40 Block T15

Acc T15

I/Trip T40

75Hz N N Y N Y Y N N Y

150Hz Y Y Y Y Y Y Y(1) Y(1) Y

Note 1: Use of solid state outputs is required for T15

Security: In all cases, security has been shown to be better than 2 in 500,000 noise bursts over the

signal / noise ratio in the range +3dB to –12dB.


5.1.2 Channel functions The 9745VF has four channels. Each channel is configured by the logic scheme to one of the following

functions:

Unallocated: No functionality.

Modem: Provides a 300 baud modem link between the two RFL9745’s at each end of the line. The modem is

utilized to exchange information about the addresses of the units, the channel delay, and to provide access to

setting and status information at the remote end of the link.

Block or acceleration: The unit provides a single frequency shift channel which is used to carry the blocking

or acceleration signalling. In the quiescent state a guard tone is transmitted, which shifts up to a trip tone to

transmit the signal. For acceleration and blocking functions speed of response is critical; the approved logic

schemes provide a frequency shift of 150Hz for these functions. Note that to achieve T15 compliance use of

solid state outputs is required.

Intertrip: For intertripping functions increased security is provided by operating dual 75Hz channels in

parallel, so that both channels must receive a valid signal within a preset time frame for the intertrip to be

validated. Thus in the approved VF logic schemes intertrip channels are always designated as pairs e.g.

ESMUII.1C provides a single intertrip utilising two audio channels. These may be channels 1 & 2, or channels

3 & 4. Taking channels 3 & 4 as an example, in the quiescent state channel 3 is transmitting a low frequency

and channel 4 is transmitting a high frequency. When a trip send is initiated channel 3 will shift to a higher

frequency and channel 4 will shift to a lower frequency.

Example illustrating Direction of Frequency Shift for Trip

Guard Ch 3 (low) Ch 4 (high)

Trip Ch 3 (high) Ch 4 (low)

M S

Fc1 Fc3 Fc4

Channels 3/4 IntertripChannel 1

Modem

G1 G2T1 T2

FREQUENCY

S

I

G

N

A

L

Key: Channel 1, Modem M = mark frequency. S = space frequency. Channel 2, Unallocated Channel 3, Intertrip G1 = guard frequency. T1 = trip frequency.

Channel 4, Intertrip G2 = guard frequency. T2 = trip frequency.

Graphical representation of channel functions for ESMUII.1C


5.1.3 Effect of communications failure In the event of a failure of the communications circuit, no transmission of trips is possible.

In the event that a failure occurs the different functions respond as follows:

Intertrip and acceleration outputs remain in their last state

Blocking function outputs open

The following table illustrates the effect on the different outputs should a communications failure occur during

the transmission of a trip:

Effects of communications failure during transmission of a trip

Function State of output during comms

failure Restorative action required

Acceleration Latches on Restore comms and de-energise input, or power cycle receiving unit

Blocking Output opens N/A

Intertrip Latches on Restore comms and de-energise input, or power cycle receiving unit

5.2 Single and Dual 4-wire communications links

The communications module in the 9745 VF can be configured either for use with a single 4-wire

communication circuit, or with dual 4-wire communication circuits by altering jumpers located on the board.

Single 4-wire comms – All four tone units (tone modules) transmit and receive on comms link ‘A’

Dual 4-wire comms – Tone units 1 & 2 transmit / receive on link ‘A’

– Tone units 3 & 4 on link ‘B’

End-to-end applications require the use of a single communications link (single 4-wire), or for additional

security they may be configured with duplicate comms circuits (dual 4-wire).

Cascaded (e.g. triangulated) schemes and tee schemes require dual 4-wire communication circuits.

The following schematics illustrate the different applications:

End-to-end scheme, with single 9745 at each end

9745 Substation A

VF Interface A

CH1 CH2 CH3 CH4

9745 Substation B

VF Interface A

CH1 CH2 CH3 CH4

Single 4-wire VF comms

End-to-end scheme using single 4-wire comms Used for all ES…. logic schemes and ECIIII.1C in single 4-wire mode


Duplicate scheme, end-to-end, providing diverse routing protection utilising one RFL9745

at each end.

Triangulated scheme configuration involving three or more substations

9745 Substation A

Circuit A Circuit B

CH1 CH2 CH3 CH4

9745 Substation B

Circuit A Circuit B

CH1 CH2 CH3 CH4

4-wire comms circuit ‘A’

4-wire comms circuit ‘B’

Duplicate scheme using dual 4-wire comms Used with logic scheme ECIIII.1C in dual 4-wire mode

9745 Substation A

Circuit A Circuit B

CH1 CH2 CH3 CH4

9745 Substation B

Circuit A Circuit B

CH1 CH2 CH3 CH4

9745 Substation C

Circuit A Circuit B

CH1 CH2 CH3 CH4

4-wire comms circuit


Triangulated scheme using 9745s configured to dual 4-wire comms Used with logic scheme ECIIII.1C in dual 4-wire mode


Note: To transfer a trip from one circuit to an adjacent circuit on each single 9745, it is necessary to hardwire the output from one circuit to the input of the adjacent circuit, and vice-versa


Tee scheme configuration involving three substations

5.3 Transmit Level setting

In order to ensure reliable communications it is important to ensure that the levels to line are optimally set

taking into consideration the number of tones being utilised within the RFL9745.

The audio comms interface is presented as a 4-wire, 600ohm, balanced output. The maximum permitted

composite signal to line for a BT line connection is -13dBm. It may also be necessary to consider losses in

external isolation transformer equipment, if fitted.

The transmit levels are set in parameters 003, 018, 033 and 048 for channels 1 – 4 respectively. In standard

configurations the transmit levels set for a maximum line level of -13dB as illustrated in the following

diagrams. However, if there is a requirement on site to alter these levels (eg private pilot lines used), the

settings may be adjusted to suit.

5.3.1 Single 4-wire Circuit – Transmit Level Settings

For logic schemes ESMAII, ESMBII and ECIIII (single 4 wire) four channels (tones) are transmitted on the

same VF line.

For logic scheme ESMUII three channels (tones) are transmitted on the same VF line.

Refer to following diagram:

9745 Substation A

Circuit A Circuit B

CH1 CH2 CH3 CH4

9745 Substation B

Circuit A Circuit B

CH1 CH2 CH3 CH4

9745 Substation C

Circuit A Circuit B

CH1 CH2 CH3 CH4



Tee scheme using 9745s configured to dual 4-wire comms Used with logic scheme ECIIII.1C in dual 4-wire mode

Link Tx to Rx

Link Tx to Rx

Note: To transfer a trip from one circuit to an adjacent circuit on each single 9745, it is necessary to hardwire the output from one circuit to the input of the adjacent circuit, and vice-versa


LINE BARRIER TRANSFORMERS

TB 2-3

TB 2-1

TB 2-2

TB 2-4

LEVEL SETTINGS PER TONE TO GIVE -13dBm LINE

SIGNAL. NUMBER SIGNAL OF TONES LEVEL 1 - 12.5dBm 2 - 15.5dBm 3 - 17.0dBm 4 - 17.5dBm

RFL 9745 COMMS

MODULE

COMMUNICATIONS

LINE

COMPOSITE VF LEVEL AT NOMINAL 600 OHM LINE, -13dBm

RECEIVED

LEVEL (DEPENDANT ON COMMS CIRCUIT)

CHANNEL ‘RECEIVE-

LEVEL’ SET TO MEASURED

LEVEL

Channel output levels to give -13 dBm line level – single 4-wire circuit

5.3.2 Dual 4-wire Circuit – Transmit Level Settings

For logic scheme ECIIII.1C dual 4-wire there will be two channels (tones) communicating to each VF line.

LINE BARRIER

TRANSFORMERS

TB 2-7

TB 2-5

TB 2-6

TB 2-8

LEVEL SETTINGS PER TONE

TO GIVE -13dBm LINE SIGNAL.

NUMBER OF SIGNAL

TONES

LEVEL 1 - 12.5dBm

2 - 15.5dBm

RFL 9745 COMMS

MODULE COMMUNICATIONS

LINES

COMPOSITE

VF LEVEL AT

NOMINAL 600 OHM

LINE, -13dBm

RECEIVED LEVEL

(DEPENDANT ON

COMMS CIRCUIT)

CHANNEL ‘RECEIVE-LEVEL’

SET TO MEASURED LEVEL

COMPOSITE

VF LEVEL AT

NOMINAL 600 OHM

LINE, -13dBm

RECEIVED LEVEL

(DEPENDANT ON

COMMS CIRCUIT)

NUMBER OF SIGNAL

TONES LEVEL

1 - 12.5dBm

2 - 15.5dBm

CHANNEL ‘RECEIVE-LEVEL’

SET TO MEASURED LEVEL.

CIRCUIT A

CIRCUIT B

TB 2-3

TB 2-4

TB 2-1

TB 2-2

Channel output levels to give -13 dBm line level – dual 4-wire circuit


5.4 Receive Level and Receive Alarm Level setting

Receive Levels and Receive Alarm Levels must always be set at commissioning.

5.4.1 Receive Level The actual Receive Level for each channel must be measured at the time of commissioning. These measured

values are used to set the Receive level into parameters 007, 022, 037 and 052 for channels 1 – 4 respectively.

This will give each channel its optimum dynamic operating range. Use of private pilots may result in

significant attenuation at the receive end. Use of BT or other circuits will generally provide a loss in the range

of -1 to +3dB.

5.4.2 Receive Level Alarm The setting is determined by the function of the channel, and is set into parameters 008, 023, 038, and 053 for

channels 1 – 4 respectively. For a ‘modem’ the Receive Alarm Level should be set at 12dB lower than the

measured Receive Level and for all other channels this should be set at 6dB lower than the measured Receive

Level on a per-channel basis. For example, if the received level on Channel 3 is -18dBm, then the Receive

Level Alarm should be set at -24dBm. This has the effect of setting a non-urgent comms alarm in the event

that the received signal strength deteriorates by more than 6dB from normal for more than 5 seconds.

5.5 Frequency setting The parameter file associated with each VF logic scheme contains default transmit and receive frequencies

pre-configured that will enable the units to work ‘out of the box’. Generally it is unnecessary to modify these.

This section provides a guide to the principles behind frequency selection. Tables of recommended frequencies

are also included.

The default settings use the same frequencies for transmit and receive for each channel; this permits the units

to operate in loopback mode for testing purposes. Default values must not be changed without fully

understanding the implications on the operation of the system.

5.5.1 VF Line Characteristics

The recommended VF circuit specified for protection transmission use in the UK is the BT circuit original

known as Key line 3 circuit Option 4, four-wire presented, equivalent to CCITT G712. This circuit has the

characteristics listed in table below.

BT Line Characteristics

Frequency Range/ Loss Frequency Range/ Group Delay

Frequency Range (Hz) Loss (dB) Frequency Range Group Delay (uS)

300 - 500 -2 to + 6dB 500 - 600 3000

500 - 2800 -1 to +3dB 600 - 1000 1500

2800 - 3000 - 2 to + 6dB 1000 - 2600 500

2600 - 2800 3000

From the table, it can be seen that the optimum operating frequency range is between 1000 Hz and 2600Hz. It

is possible to operate closely outside of these frequencies but the performance of the circuit is not consistently

guaranteed.


5.5.2 Frequency Selection Rules

Frequencies chosen for each channel are based on function and operating speed requirements, and are

calculated as follows:

Select frequency shift ( N Hz) according to the ‘operate time’ required (ie 150Hz for modem,

accelerate and blocking functions, and 75Hz for dual channel intertrip functions – see section 5.1.1).

Allocate a centre frequency for each channel. The minimum channel spacing between the centre

frequency for each channel is selected from the following table:

Frequency Shift Minimum channel spacing

150Hz 680Hz

75Hz 340Hz

Where channels of different frequency shifts are used, the distance to the centre of the lesser shift

channel from the greater shift channel must be that specified as that for the greater shift channel. Thus

the distance between a 150 Hz shift channel and a 75 Hz shift channel must be 680 Hz.

The upper and lower frequencies are calculated as +N Hz and –N Hz from the centre frequency. At all

times the upper and lower frequency for trip functions must fall within the range 1000 – 2600Hz when

using BT pilots. It is acceptable for the ‘guard’ frequency to lie outside this band provided the

associated ‘trip’ frequency falls within. Modem channels may be selected within the range 500 –

2800Hz.

The same frequencies may not be used for the different channels in a single 9745.

The same frequencies may be used for transmit and receive on each channel. Note that this will permit

channels to be looped back for testing purposes. This may not be acceptable for every installation.

The same frequencies may be used for different 9745s in one location, but there will be a risk of units

communicating to the wrong end should the communications connections become inadvertently

crossed. Units with modem protect against the possibility of cross-connection or loopback by

permitting a unique address to be set for each 9745.


5.5.3 Standard frequency settings

Standard frequencies have been developed, based on the frequency selection rules in the previous section, and

also based on historically approved and installed data. These are detailed in the following tables. Further

acceptable frequencies are detailed in the RFL manual.

Standard Frequency Selection Table

for 150Hz

Group Low High

1 1050 1350

2 1650 1950

3 2250 2550

Standard Frequency Selection Table 1

for 75Hz Note: Groups from Table 1 cannot be mixed with groups from Table 2

Standard Frequency Selection Table 2

for 75Hz Notes: Group 1 can only be used for Channels 1 or 3 Group 6 can only be used for Channels 2 or 4 Groups from Table 2 cannot be mixed with groups from Table 1

Group Low High Group Low High

1 1045 1195 6 860 1010

2 1385 1535 7 1200 1350

3 1725 1875 8 1540 1690

4 2065 2215 9 1880 2030

5 2405 2555 10 2220 2370

11 2560 2710

Standard Frequency Selection Table as used in EA approved ‘ES..’ logic schemes

for Channel 1: Modem

Channel 2: 150Hz

Channels 3 & 4: 75Hz

Channel Low High

1 785 1085

2 1465 1765

3 2225 2375

4 2565 2715

Note that the ‘trip’ frequency for channel 4 is the low value

5.5.4 Frequency Selection for Cascaded Scheme using Dual 4-wire circuits and ECIIII.1C logic

On the following page is a typical scheme for a cascaded intertrip; for these applications it is important to

configure the system using different frequencies for each link:


‘A’

T:1,2

R:3,5

‘A’

T:1,4

R:3,4

‘A’

T:3,4

R:1,4

‘A’

T:3,5

R:1,2

‘B’

T:1,3

R:2,3

‘B’

T:2,4

R:1,5

‘B’

T:1,5

R:2,4

‘B’

T:2,3

R:1,3

Cascade

Inhibit SITE 4 SITE 2 Cascade



Inhibit SITE 1 SITE 3

SITE1

Logic: ECIIII1C.mhx

ECIIII1CDW.bat

SITE 2

Logic: ECIIII1C.mhx

ECIIII1CDW.bat

SITE 3

Logic: ECIIII1C.mhx

ECIIII1CDW.bat

SITE 4

Logic: ECIIII1C.mhx

ECIIII1CDW.bat

Example Configuration for ECIIII.1C cascaded scheme

illustrating the frequency groups allocated to each channel


5.6 Other parameter settings

The previous sections shave referred to the following settings:

Transmit Level setting

Receive Level and Receive Alarm Level setting

Frequency setting

In addition there are a number of other parameters which require setting to characterise a channel

for optimum performance. These are:

5.6.1 Receive Bandwidth, FM Noise & AM Noise

Receive Bandwidth. Parameter 006, 021, 036, 051 for channel 1 – 4 respectively. This is

the range in Hz over which the receiver will expect to see the received signal (Either guard

or trip frequency) within 3dB of its nominal level. Outside of the bandwidth envelope, the

receiver filters will attenuate any incoming signal.

AM Noise. Parameter 009, 024, 039, 054 for channel 1 – 4 respectively. This is the Signal

to noise ratio i.e. the level of amplitude-modulated noise which the receiver will tolerate

superimposed on the VF signal before determining that the overall signal quality is

insufficient for proper signal extraction. Further details of the in-band noise detection

system are in the RFL manual section 2.2.3.2.

FM Noise. Parameter 010, 025, 040, 055 for channel 1 – 4 respectively. This is the level of

frequency-modulated noise superimposed on the signal which the receiver will tolerate

before determining that the signal quality is insufficient for proper signal extraction. FM

noise usually occurs during the switching of frequencies (e.g. guard to trip)

These parameters must be set in accordance with the following table:

Frequency Shift Hz

Channel Spacing

Receive Bandwidth

AM Noise dB FM Noise %

Settings for Narrowband Audio Communications module

Modem 150 Hz 680 Hz 380 Hz 20dB 70%

75 Hz 340 Hz 225 Hz (200Hz*) 5dB 30%

150 Hz 680 Hz 380 Hz 8dB 28%

Settings for Wideband Audio Communications module

Modem 150 Hz 680 Hz 360Hz 5dB 75%

75 Hz 340 Hz 225 Hz 9dB 15%

150 Hz 680 Hz 360 Hz 14dB 19%

* In the case of ECIIII.1C only (4 channels at 75 Hz) Receive Bandwidth must be set to 200Hz for Narrowband Communication modules only. (Details from Tables 5-1 and 5-2 in RFL Manual).


5.6.2 Address and channel delay settings

All 9745VF units with channel 1 set as modem (i.e. all logic schemes except ECIIII.1C) have the

facility for end to end communication. Provided Auto Test is enabled, the following tests are

effective; the time interval (increment) between tests is set by default to one minute:

Local Address and Remote Address. Parameter 067 and 068 respectively. By setting a

different address into each unit at either end of a link, each 9745 will check that the correct

unit is connected at the remote end. By default, the same addresses are programmed into all

units: this permits units to be connected back to back for quick testing before final set up. It

is important that unique addresses are allocated at commissioning. Zero is a universal

address (i.e. any address is accepted; this should not be used). The Address Test only

operates when Auto Test is enabled, refer to Section 5.6.5.

Channel Delay Alarm setting. Parameter 062. Used to initiate an alarm if the channel delay

test (ping-pong test) exceeds the set value. Default setting 30ms. The Channel Delay Test

only operates when Auto Test is enabled.

5.6.3 Other settings – Programming menu

System Label. Parameter 999. This is the message displayed on the LCD front panel, and

may be customised.

Optional Status Board. Parameter 060. Must be set to ‘No’.

Year, date and time in real time clock. It is usual to set times in GMT. Parameters 063, 064

and 065. If IRIG-B is in use, date and time values will be overridden.

EE Pot J10. Parameter 062. This must be set to A or B according to the position of jumper

10 on the audio comms board (see Section 4.5 for position of J10, which is a function of

whether the board is set for single or dual 4-wire comms).

Hidden parameters 180 to 183 as follows. Hidden parameters are accessed by the enabling

parameter 099 in the test menu.

Parameter No. Parameter Name Wideband Narrowband

180 FM Alarm TC 0.001 sec 0.001sec

181 FD Upper Threshold 0.275 dB 0.330 dB

182 AM Upper Threshold 0 dB 0 dB

183 AM Lower Threshold -38 dB -28 dB

5.6.4 Other settings – Sequence of Events (SOE) menu

SOE Log Level of Event Triggers. Set to

Level 1 (only significant events recorded, default setting)

Level 2 (all activity recorded) for test purposes.

5.6.5 Other settings – Test menu:

Tests / Resets on Front Panel. Parameter 006. Must be disabled (default setting).

Auto tests. Parameter 007. Must be enabled for all logic schemes (except ECIIII.1C) to

enable Address Test and Channel Delay Test (ping-pong) to operate.

Time between tests. Parameter 008. By default set to 00:01; i,e, one minute.

Next test starts. Parameter 009. Set at commissioning to a time just ahead of current time.

View hidden parameters. Set by accessing parameter 099.


6 9745 Digital – Functionality and Settings

Refer to Section 11 for details of functionality, connections and settings for each logic scheme.

6.1 Operate times

The operating time for all functions is identical and remains constant irrespective of the number of

functions being used. The following table details maximum operate time with 2ms input de-bounce

timer and zero ms pre-trip timer.

Max. Operate Time (Solid state output)

Max. Operate Time (Relay output)

6.0 ms 11.0 ms

6.2 Digital logic schemes

The EA approved scheme EDBIAI.1C combines intertrip, acceleration and blocking functionality

within a single RFL 9745; EDIIII.1C provides four individual intertrips. The security provided by

digital communications requires only a single channel to transmit an intertrip. 4C versions are for

dual PSU equipment.

Logic schemes SDIIII.1E and 4E are a refinement of the EA approved scheme that offers improved

functionality when used with switching networks. The following additional features are

incorporated:

Optimisation for where the backbone of the communications system comprises an SDH

network, in particular providing operational continuity in the event of comms restoration

after a switch on the network with a break not exceeding 50ms, and the avoidance of alarm

generation.

Incorporation of the enhanced autotest facility

6.3 Communication options

The 9745 Digital uses the same modules as the VF version with the exception of the Digital

Communications module. This is inserted in the top slot in place of the Audio Communications

module. A range of digital interface modules plug into the rear of the digital communications

module to provide an interface for different protocols. These may be for either electrical interfaces

or fibre optic interfaces – refer to Sections 2.2 and 4.6 for details.

6.3.1 Effect of communications failure

In the event of a failure of the communications circuit, no transmission of trips is possible.

In the event that a failure occurs the different functions respond as follows:

Intertrip and acceleration outputs remain in their last state

Blocking function outputs open

The table in Section 5.1.3 illustrates the effect on the different outputs should a communications

failure occur during the transmission of a trip.


6.4 Digital Parameter Settings

6.4.1 Parameter settings

The following parameters must be verified / set at commissioning (default settings shown in

brackets)

Major Data error alarm (6, 500 i.e. 6 error words in 500)

Minor Data error alarm (400, 200,000 i.e. 400 error words in 200,000)

BER alarm level (1E – 04)

System Label. This is the message displayed on the LCD front panel.

Local Address and Remote Address. Parameter 067 and 068 respectively. By setting a

different address into each unit at either end of a link, each 9745 will check that the correct

unit is connected at the remote end. By default, the same addresses are programmed into all

units: this permits units to be connected back to back for quick testing before final set up. It

is important that unique addresses are allocated at commissioning. Zero is a universal

address (i.e. any address is accepted; this should not be used). The Address Test only

operates when Auto Test is enabled, refer to Section 5.6.5.

Channel Delay Alarm setting. Parameter 062. Used to initiate an alarm if the channel delay

test (ping-pong test) exceeds the set value. Default setting 30ms. The Channel Delay Test

only operates when Auto Test is enabled.

System Label. Parameter 999. This is the message displayed on the LCD front panel, and

may be customised.

Optional Status Board. Parameter 060. Must be set to No.

Year, date and time in real time clock. It is usual to set this in GMT. Parameters 063, 064

and 065. If IRIG-B is in use, date and time values will be overridden.

Hidden parameters 186 and 193 as follows. Hidden parameters are accessed by enabling

parameter 099 in the test menu.

Parameter No. Parameter Name Default Setting

186 # Oks Resets Minor 30

187 # Oks Resets Major 30

188 Maximum Jitter 30.0 μs

189 # Drop Re-frame 3

190 # CRC out sync 30

191 # Accept Message (to accept trip) 3 or 4 * (see note below)

192 Upper freq limit (clock, kb/s) 64320 – 71000 (typ)

193 Lower freq limit (clock, kb/s) 50000 – 63680 (typ)

* Parameter 191 should be set to 4 for enhanced security. Parameter 191 may be

set to 3 when the link has minimal potential for noise, but must never be set to

less than 3.


6.4.2 Other settings – Sequence of Events (SOE) menu:

SOE Log Level of Event Triggers. May be set to Level 1 (only significant events recorded,

default setting); or level 2 (all activity recorded) for test purposes.

6.4.3 Other settings – Test menu:

Tests / Resets on Front Panel. Parameter 006. Must be disabled (default setting).

Auto Tests. Parameter 007. Must be enabled to enable Address Test and the Channel Delay

Test (ping-pong) to operate.

Time between tests. Parameter 008. By default set to 00:01; i.e., one minute.

Next test starts. Parameter 009. Set at commissioning to a time just ahead of current time.

View hidden parameters. Set by enabling parameter 099 (Debug Information)


7 Programming the RFL 9745

7.1 File types

The RFL9745 has installed within the main CPU memory its Basic Input Output Software (BIOS).

This enables it to read and store down-loaded system files, primitives and parameters which tailor

the unit to the particular functionality required.

Normally, the unit arrives ready programmed to the user requirements. However, if there is a

change of scheme, a new logic file and parameter file may be installed, or if an older CPU is being

upgraded for use with a Wideband Audio Communications module, it may be upgraded to the latest

System software.

The following three files (or four files if separate frequency file is used) make up a complete

software installation.

a) System file (.mhx) This holds the operating system software which controls the

communication between the different elements of the unit. The suffix .mhx (Motorola

Hex binary file) defines it as an executable program. The following software versions

are valid:

Versions 4.21 and 4.81 (pre Jan 2006) – Generally loaded on CPU type 105025-20

(or 105025-1), these System files are not suitable for use with the Wideband Audio

Comms module. If one of these system files is present on equipment that is to be

upgraded with a Wideband Audio Comms module, the System software must be

upgraded to Version 5.2. Refer to Section 12.1 for update procedure.

Version 5.2 (Software name: SW9745SY026. File name: s9745r09.mhx).

Current for CPU modules ref. 107330-20, 107330-1, this System software is compatible

with Narrow and Wideband Audio Comms modules, and Digital Comms modules.

Backward compatible with all earlier CPU versions including 105025-20; not

compatible with CPU 107335-1.

Version 7.0 - (File name: s9745r201.mhx).

Version 7.2 - (File name: s9745r203.mhx).

Version 7.0 (up to Dec 2009) and Version 7.2 (Jan 2010 on) are only compatible

with CPU 107335-1 (post early Jan 2008); not backward compatible with any

earlier CPU. Suitable for Wideband Audio and Digital Comms modules.

b) Logic file (.mhx) Contains the logic and fixed settings for the required logic scheme.

c) Parameter file (.bat) Contains the parameter settings for a given logic scheme, including

frequency settings for VF units. Parameters vary according to the modules fitted and

communications interfaces. Accordingly there may be more than one parameter file

associated to a logic file dependent on the scheme. Along with many other functions, the

parameter file links the logical inputs and outputs to the physical interfaces. Experienced

users may wish to modify these files to suit local conditions.

d) Frequency file (.bat) Pre Jan 2006 the frequencies for each VF logic scheme were loaded

as a separate .bat file prefixed FS. Since then, frequencies settings have been

incorporated within the parameter file so it is not necessary to load a separate frequency

file.


7.2 Standard Logic Schemes

Each 9745 requires one logic file and its associated parameter file. Equipment shipped from the

factory will generally be pre-configured with the files from the following range.

“E” Series Generic VF Schemes

Using Wideband Audio Tone module

Requires System software version 5.2 or higher, subject to CPU (refer to Section 7.1)

Application Logic file Parameter file Notes

ECIIII.1C Single 4-wire ECIIII1C.mhx ECIIII1CSW.bat Single PSU

ECIIII.3C Single 4-wire ECIIII3C.mhx ECIIII3CSW.bat Dual PSU

ECIIII.1C Dual 4-wire ECIIII1C.mhx ECIIII1CDW.bat Single PSU

ECIIII.3C Dual 4-wire ECIIII3C.mhx ECIIII3CDW.bat Dual PSU

ESMUII.1C ESMUII1C.mhx ESMUII1CW.bat Single PSU

ESMAII.1C ESMAII1C.mhx ESMAII1CW.bat Single PSU

ESMBII.1C ESMBII1C.mhx ESMBII1CW.bat Single PSU

Using Narrowband Audio Tone module

Requires System software version 4.21 or higher subject to CPU (refer to Section 7.1)


ECIIII.1C Single 4-wire ECIIII1C.mhx ECIIII1CSN.bat Single PSU

ECIIII.3C Single 4-wire ECIIII3C.mhx ECIIII3CSN.bat Dual PSU

ECIIII.1C Dual 4-wire ECIIII1C.mhx ECIIII1CDN.bat Single PSU

ECIIII.3C Dual 4-wire ECIIII3C.mhx ECIIII3CDN.bat Dual PSU

ESMUII ESMUII1C.mhx ESMUII1CN.bat Single PSU

ESMAII ESMAII1C.mhx ESMAII1CN.bat Single PSU

ESMBII ESMBII1C.mhx ESMBII1CN.bat Single PSU

“E” Series Generic Digital Schemes



EDBIAI.1C EDBIAI1C.mhx EDBIAI1C.bat Single PSU

EDBIAI.4C Dual PSU Available on request

EDIIII.1C S01754PA.mhx S01754PA.bat Single PSU

EDIIII.4C S01743PA.mhx S01743PA.bat Dual PSU


“S” Series Specific Digital Schemes (See Notes for specific details)



SDIIII.1E S01762PB.mhx S01762PB.bat Optimised for SDH Single PSU

SDIIII.4E Optimised for SDH Dual PSU. Available on request

‘Y Series’ VF Schemes These schemes operate identically to the generic “E” schemes, but have different I/O configuration and customised alarm allocations specific to YEDL schemes

Using Wideband Audio Tone module

Requires System software version 5.2 or higher, subject to CPU (refer to Section 7.1)


YEIIII.2C YEIIII2C.mhx YEIIII1CSW.bat Single PSU. YS configurations are for single 4-wire applications. YE may be individually configured for single or dual 4-wire applications

YSMUII.2C YSMUII2C.mhx YSMUII2CW.bat

YSMAII.2C YSMAII2C.mhx YSMAII2CW.bat

YSMBII.2C YSMBII2C.mhx YSMBII2CW.bat

Using Narrowband Audio Tone module



YEIIII.2C YEIIII2C.mhx YEIIII1CSN.bat Single PSU. YS configurations are for single 4-wire applications. YE may be individually configured for single or dual 4-wire applications

YSMUII.2C YSMUII2C.mhx YSMUII2CN.bat

YSMAII.2C YSMAII2C.mhx YSMAII2CN.bat

YSMBII.2C YSMBII2C.mhx YSMBII2CN.bat

“Y” Series Specific Digital Schemes (See Notes for specific details)



YDBIAI.1E S01545PB.mhx S01545PB.bat Optimised for SDH Single I/O module

YDBIAI.2E S01538PB.mhx S01538PB.bat Optimised for SDH Dual I/O modules


7.3 April Lite April Lite is a PC Windows based utility that is used to upload and download files to the 9745, and

is used to enter revised settings at commissioning. The current version is 9745v1 version 2.1.

Connection is made using a straight serial cable to the front port on the 9745, or a crossed serial

cable to the rear port. Use the Terminal / Connect function to initialise the connection to the 9745 as

in the following screenshot, and always use the disconnect function before removing the

disconnection cable.

Comms settings are:

9600 baud; 8 data bits; no parity; 1 stop bit; connect type - direct

The Main Menu is as follows, illustrating the menus options:

H - Display the main menu

A - Go to the alarms display

V - Go to the values display

P - Go to the programming menu (password required)

D - Go to the read settings menu

F - Go to the configuration and software version display

K - Go to the logic programming menu (password required)

T - Go to the test menu (password required)

U - Enter the update mode

X - Exit the update mode

S - Go to sequence of events menu

At any level, ‘Q’ will quit any level. Always Quit to the Main menu before disconnecting.

For units with modem only, ‘W’ will ‘window’ through to the remote end, permitting settings to be

viewed and adjusted remotely: XXX is used to terminate the remote session.

Levels ‘P’ and ‘T’ are password protected.


To obtain a Sequence of Events (SOE) download, from the root menu enter S; this

displays the Sequence of Events Menu, as follows:

9745>S

SEQUENCE OF EVENTS MENU

H - Display sequence of events help

A - Toggle Labels on Event Display, Currently = User Entered

D - Dump All Events to Port

E - See Directory of Events

L - Toggle Level of Event Triggers, Currently = Level One

R - Reset All Events

Q - Leave Sequence of Events Menu

## - View this Sequence of Events record

There are two optional downloads, E (Directory of Events) and D (Dump all Events).

Entering ‘E’ at this level downloads to screen a summary of events.

9745-S>E

030 07/03/09 07:04:48.374 TRIP SEND Inactive

029 07/03/09 05:52:41.391 TRIP SEND Active

028 07/03/09 05:52:41.387 TRIP SEND Active

027 06/26/09 18:58:44.250 COMMS URGENT Active

026 06/26/09 03:08:15.263 COMMS URGENT Active

025 06/19/09 14:39:44.571 TRIP SEND Inactive

Alternatively entering ‘D’ at this level downloads to screen the Detailed SOE Log. (This

can be aborted by entering ‘X’ followed by ‘Enter’). The screenshot following is a single

event from a VF 9745.

9745-S>D

Record 037 Event Trigger: TRIP RX(1) Inactive

Event Time: 07/03/09, 06:28:46.237

TRIP SEND I TRIP RX(1) I Rx Freq High Ch1 I

INPUT2A I TRIP RX(2) I Rx Freq High Ch2 SQ

LOCKUP INHIBIT I TRIP RX(3) I Rx Freq High Ch3 I

INPUT4A I TRIP RX(4) I Rx Freq High Ch4 A

INPUT1B I OUTPUT1B I Rx Freq Low Ch1 I

INPUT2B I OUTPUT2B I Rx Freq Low Ch2 SQ

INPUT3B I OUTPUT3B I Rx Freq Low Ch3 A

INPUT4B I OUTPUT4B I Rx Freq Low Ch4 I

COMMS URGENT A A_OUTPUT1 I Tx Function Ch1 I

COMMS NON-URG I A_OUTPUT2 I Tx Function Ch2 SQ

EQUIPMENT FAIL I A_OUTPUT3 I Tx Function Ch3 I

A_RELAY1B I A_OUTPUT4 I Tx Function Ch4 A

A_RELAY2B I A_OUTPUT5 I Address Test Fail I

A_RELAY3B I A_OUTPUT6 I Autotest Timeout A

Run Auto Test I Channel Delay I Bus Error I

FM Noise Ch1 I AM Noise Ch1 I Left Power Low I

FM Noise Ch2 I AM Noise Ch2 I Right Power Low A

FM Noise Ch3 I AM Noise Ch3 I Battery Failure I

FM Noise Ch4 I AM Noise Ch4 I RS232 Active I

Comms CPU Failure I Outage Timer Active A Test in Progress I

Autotest Complete I XMODEM Download I Bootup in Progress I


The screenshot following is a single event from a Digital 9745:

9745-S>D

Record 007 Event Trigger: Annunc Relay 1A Inactive

Event Time: 11/21/06, 10:54:41.172

Input 1A I Output 1A I Rx Function 1 I




Input 1B I Output 1B I Tx Function 1 I




Annunc Relay 1A I Annunc Output 1 I Major Data Error I

Annunc Relay 2A I Annunc Output 2 I Minor Data Error I

Annunc Relay 3A I Annunc Output 3 I Configuration Err I

Annunc Relay 1B I Annunc Output 4 I Alarm BER I

Annunc Relay 2B I Annunc Output 5 I Address Test Fail I

Annunc Relay 3B I Annunc Output 6 I Autotest Timeout I

Run Auto Test I Channel Delay I Bus Error I

Rx Function 5 SQ Tx Function 5 I Left Power Low I

Rx Function 6 SQ Tx Function 6 I Right Power Low A

Rx Function 7 SQ Tx Function 7 I Battery Failure I

Frame Error I Clock Error I RS232 Active A

Comms CPU Failure I Outage Timer Active I Test in Progress I

Autotest Complete A XMODEM Download I Bootup in Progress I

Refer to Section 5.6.4 for the Setting Level ‘L’ for the SOE


8 Installation Guidelines

The 9745 is designed for front mounting directly into a 19” rack.

Always leave 1U space above and below each 9745 for ventilation.

Maximum temperature range is -30 to +65 degrees C,

max humidity 95% non-condensing

All VF circuits must be isolated from external line.

Before powering up equipment:

o Ensure all modules are correctly seated and retaining screws fully tightened.

o Measure voltages and check they are correct for the equipment before connecting.

o Ensure I/O jumpers are correctly set for applied voltage.

o Ensure equipment is earth before powering up.

o Ensure all jumper settings are correct.

o Check all connections are correct.

Refer to 9745 manual for further details

Commissioning should be carried out by a trained engineer competent in this type of

equipment. Use should be made of the RFL Commissioning Setting record sheet.

It is of crucial importance when commissioning that Receive Levels and Receive Alarm

Levels are set (VF equipment) and that Message Accepts are set (Digital equipment).

9 Operation, Maintenance and Fault Finding Operation

On power up the 9745 initiates a self test. The display reads ‘Test in progress’ and the eight

Tx / Rx status LEDs all turn red for a short time, then extinguish.

An extended system test may be initiated by holding the test button in when power is turned

on.

When correctly operating the LED on the front panel marked ALARM will be green

(except on early models; on these the Alarm LED was off). When there is an alarm present

the ALARM LED turns red.

The status LEDs illuminate red to indicate trip activity on the relevant communications

channel. They do not represent the status of inputs or outputs.

By default, front panel tests are disabled.

Alarms messages may be scrolled by pressing the ‘down’ or ‘up’ buttons.

On VF units, channel transmit and receive levels can be viewed using the ‘levels’ button.

On all units I/O status can be viewed by using the ‘I/O’ button.

The protection engineer must be ensure that operational end to end tests are satisfactory

before putting this equipment into service

Battery Maintenance

Older versions of the RFL9745 are fitted with 3.6V Lithium AA batteries on the CPU

module. These must be replaced every 2 years. It is highly recommended that all batteries

be replaced with a Battery Elimination Module. Refer to Section 12.4

Fault Finding

Refer to RFL9745 Manual Section 8.3 for fault finding procedure.

Module removal and replacement

The 9745 must be powered down before any module is removed for maintenance or

replacement.


10 VF Logic schemes and Default parameter settings

10.1 ESMAII.1C and ESMBII.1C

Single 4-wire communications only

Requires 2 I/O modules, A & B

For logic and parameter file references refer to section 7.2

For Audio comms board jumper settings refer to section 4.5

ESMAII.1C and ESMBII.1C – Functional details Requires top and bottom I/O modules

Function Audio

channel 4W Comms

circuit

Comms Connections

TB2 Inputs Outputs Trip Timing

Modem 1

A Tx: 3, 4 Rx: 1, 2

- - N/A

Acc ‘A’ or Blocking ‘B’

2 1B 1B to 4B T15

Intertrip 3

1A 1A to 4A T40 4

Cascade lockup inhibit

3A

Comms Urgent

ANC 1A

Comms Non-urgent

ANC 2A

Equipment Fail ANC 3A Comms Urgent

ANC 1A

Comms Non-urgent

ANC 2A

Address Fail

ANC 3A

Channel allocation schematic for ESMAII.1C and ESMBII.1C

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4

Single 4-wire comms circuit (A)

I/O module B

Channel 1 - Modem Channel 2 – Acc / Block

I/O module A

Channels 3 & 4 Intertrip


Connections for ESMAII.1C and ESMBII.1C


TBA -1 + OUT 1A Intertrip Output 1

TBB -1 + OUT 1B

Acc / Block Output 1 TBA -2 – TBB -2 –


TBB -3 + OUT 2B


TBA -5 + IN 1A

Intertrip Input

TBB -5 + IN 1B Acc / Block Input

TBA -6 – TBB -6 –

TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

Cascade Lockup Inhibit

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Urgent Alarm - Intertrip

TBB -13 Com

ANC 1B Comms Urgent

Alarm – Acc / Block

TBA -14 NC TBB -14 NC


TBA -16 Com

ANC 2A Comms Non-urgent

Alarm - Intertrip

TBB -16 Com

ANC 2B

Comms Non-urgent

Alarm – Acc / Block



TBA -19Com

ANC 3A Equipment Fail

Alarm

TBB -19 Com

ANC 3B Address Fail

Alarm TBA -20 NC TBB -20 NC



TBB -22 + OUT 3B



TBB -24 + OUT 4B


Note:

VF Comms Terminations – See Section 4.5

Intertrip Input is Intertrip Send

Intertrip Output is Intertrip Receive


Logic Scheme: ESMAII.1C and ESMBII.1C Default parameter settings

VF Wideband Parameter File Name: ESMAII1CW.bat or ESMBII1CW.bat

# PARAMETER SETTING # PARAMETER SETTING

999 System Label ESMAII.1C-WB or ESMBII.1C-WB

001 Channel 1 Modem

002 Tone 1 Tx Freq 785 Hz 1085 Hz

003 Transmit Level -17.50 dBm 004 Boost Level 0 dB

005 Tone 1 Rx Freq 785 Hz 1085 Hz

006 Rx Bandwidth 360 Hz 007 Rx Level -18 dBm

008 Rx Alarm -30 dBm 009 AM Noise (SNR) 5 dB

010 FM Noise 75 %

016 Channel 2 Single






025 FM Noise 19 %







040 FM Noise 15 %







055 FM Noise 15 %

059 IP Address 000.000.000.000 060 Opt Status Board No

061 EE Pot J10 A 062 Chan delay alarm 30 ms

063 Year 2006 064 Date 02/20

065 Time 12:16:22 066 Hour Adjust 0

067 Local Address 123 068 Remote Address 123

069 Reset Log

Hidden Parameters

180 FM Alarm TC 0.001 sec 181 FD Upper Thresh 0.275 dB

182 AM Upper Thresh 0 dB 183 AM Lower Thresh -38 dB


Logic Scheme: ESMAII.1C and ESMBII.1C Default parameter settings

VF Narrowband Parameter File Name: ESMAII1CN.bat or ESMBII1CN.bat


999 System Label ESMAII.1C-NB / ESMBII.1C-NB

001 Channel 1 Modem






010 FM Noise 70 %







025 FM Noise 28 %







040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.2 ESMUII.1C


Requires 1 I/O module, A



ESMUII.1C – Functional details Requires top I/O module only

Function Audio

channel 4W Comms

circuit

Comms Connections


Modem 1

A Tx: 3, 4 Rx: 1, 2

- - N/A

Unallocated Not used - - N/A

Intertrip 3

1A 1A to 4A T40 4


3A

Comms Urgent

ANC 1A

Comms Non-urgent

ANC 2A

Equipment / Address Fail

ANC 3A

Channel allocation schematic for ESMUII.1C

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4


Channel 1 - Modem

Channel 2 – Not used

I/O module A



Connections for ESMUII.1C

I/O module ‘A’ I/O module ‘B’ not fitted


TBA -2 –


TBA -4 –

TBA -5 + IN 1A

Intertrip Input

TBA -6 –

TBA -7 + IN 2A

TBA -8 –

TBA -9 + IN 3A


TBA -10 –

TBA -11 + IN 4A

TBA -12 –

TBA -13 Com

ANC 1A Comms Urgent

Alarm

TBA -14 NC

TBA -15 NO

TBA -16 Com

ANC 2A Comms Non-Urgent Alarm

TBA -17 NC

TBA -18 NO

TBA -19 Com

ANC 3A Equipment Fail /

Address Fail Alarm

TBA -20 NC

TBA -21 NO


TBA -23 –


TBA -25 –

Note:





Logic Scheme: ESMUII.1C Default parameter settings

VF Wideband Parameter File Name: ESMUII1CW.bat


999 System Label ESMUII.1C-WB

001 Channel 1 Modem






010 FM Noise 75 %

016 Channel 2 not defined







040 FM Noise 15 %







055 FM Noise 15 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




Logic Scheme: ESMUII.1C Default parameter settings

VF Narrowband Parameter File Name: ESMUII1CN.bat


999 System Label ESMUII.1C-NB

001 Channel 1 Modem






010 FM Noise 70 %








040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.3 ECIIII.1C and ECIIII.3C Single 4-wire





Settings for ECIIII.3C Single 4-wire (dual PSU) are identical.

As there no provision for a modem channel, there is no exchange of information with the remote

unit, and no access to setting and status information from the remote end of the link.

ECIIII.1C and ECIIII.3C Single 4-wire – Functional details Requires top and bottom I/O modules

Function Audio

channel

4W Comms circuit

Comms Connections


Intertrip A 1

A Tx: 3, 4 Rx: 1, 2

1A 1A to 4A T40 2

Intertrip B 3

1B 1B to 4B T40 4


3A

Comms Urgent (I/T A)

ANC 1A

Comms Non-urgent (I/T A)

ANC 2A

Equipment Fail ANC 3A

Comms Urgent (I/T B)

ANC 1B

Comms Non-urgent (I/T B)

ANC 2B

Equipment Fail ANC 3B

Channel allocation schematic for ECIIII.1C and ECIIII.3C Single 4-wire

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4


I/O module A

Channels 1 & 2 Intertrip A

I/O module B

Channels 3 & 4 Intertrip B


Connections for ECIIII.1C and ECIIII.3C Single 4-wire

Comms Link ‘A’


TBA -1 + OUT 1A

Intertrip ‘A’ Output 1

TBB -1 + OUT 1B

Intertrip ‘B’ Output 1 TBA -2 – TBB -2 –

TBA -3 + OUT 2A


TBB -3 + OUT 2B


TBA -5 + IN 1A

Intertrip ‘A’ Input

TBB -5 + IN 1B

Intertrip ‘B’ Input TBA -6 – TBB -6 –

TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

Cascade Lockup Inhibit for

Intertrip ‘A’ and ‘B’

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Urgent

Alarm Intertrip ‘A’

TBB -13 Com

ANC 1B Comms Urgent

Alarm Intertrip ‘B’



TBA -16 Com


Intertrip ‘A’

TBB -16 Com

ANC 2B Comms Non-Urgent Alarm

Intertrip ‘B’ TBA -17 NC TBB -17 NC


TBA -19 Com


Alarm

TBB -19 Com

ANC 3B Equipment Fail

Alarm (Duplicate) TBA -20 NC TBB -20 NC


TBA -22 + OUT 3A


TBB -22 + OUT 3B


TBA -24 + OUT 4A


TBB -24 + OUT 4B


Note:





Logic Scheme: ECIIII.1C and ECIIII.3C – Single 4-wire comms circuit Default parameter settings

VF Wideband Parameter File Name: ECIIII1CSW.bat or ECIIII3CSW.bat


999 System Label ECIIII.1C-WB S4W







010 FM Noise 15 %







025 FM Noise 15 %







040 FM Noise 15 %







055 FM Noise 15 %


061 EE Pot J10 A 062 Chan delay alarm N/A

063 Year 2006 064 Date 02/20


067 Local Address N/A 068 Remote Address N/A

069 Reset Log

Hidden Parameters




Logic Scheme: ECIIII.1C and ECIIII.3C – Single 4-wire comms circuit Default parameter settings

VF Narrowband Parameter File Name: ECIIII1CSN.bat or ECIIII3CSN.bat


999 System Label ECIIII.1C-NB S4W







010 FM Noise 30 %







025 FM Noise 30 %







040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.4 ECIIII.1C and ECIIII.3C Dual 4-wire

Dual 4-wire communications only




Settings for ECIIII.3C Dual 4-wire (dual PSU) are identical.



ECIIII.1C and ECIIII.3C Dual 4-wire – Functional details Requires top and bottom I/O modules

Function Audio

channel

4W Comms circuit

Comms Connections


Intertrip A 1

A Tx: 7, 8 Rx: 5, 6

1A 1A to 4A T40 2

Intertrip B 3

B Tx: 3, 4 Rx: 1, 2

1B 1B to 4B T40 4


3A

Comms Urgent (I/T A)

ANC 1A

Comms Non-urgent (I/T A)

ANC 2A


Comms Urgent (I/T B)

ANC 1B

Comms Non-urgent (I/T B)

ANC 2B

Equipment Fail

ANC 3B

Channel allocation schematic for ECIIII.1C and ECIIII.3C Dual 4-wire

Channels 1 & 2 Intertrip A I/O module A

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4

VF 4-wire Circuit ‘A’

Channels 3 & 4

Intertrip B I/O module B

VF 4-wire Circuit ‘B’


Connections for ECIIII.1C and ECIIII.3C Dual 4-wire

Comms Link ‘A’ Comms Link ‘B’


TBA -1 + OUT 1A


TBB -1 + OUT 1B


TBA -3 + OUT 2A


TBB -3 + OUT 2B


TBA -5 + IN 1A


TBB -5 + IN 1B


TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

Cascade Lockup Inhibit for

Intertrip ‘A’ and ‘B’

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Urgent

Alarm Intertrip ‘A’

TBB -13 Com

ANC 1B Comms Urgent

Alarm Intertrip ‘B’



TBA -16 Com


Intertrip ‘A’

TBB -16 Com

ANC 2B Comms Non-Urgent Alarm

Intertrip ‘B’ TBA -17 NC TBB -17 NC


TBA -19 Com


Alarm

TBB -19 Com


Alarm (Duplicate) TBA -20 NC TBB -20 NC


TBA -22 + OUT 3A


TBB -22 + OUT 3B


TBA -24 + OUT 4A


TBB -24 + OUT 4B


Note:





Logic Scheme: ECIIII.1C and ECIIII.3C – Dual 4-wire comms circuit Default parameter settings

VF Wideband Parameter File Name: ECIIII1CDW.bat or ECIIII3CDW.bat # PARAMETER SETTING # PARAMETER SETTING

999 System Label ECIIII.1C-WB D4W







010 FM Noise 15 %







025 FM Noise 15 %







040 FM Noise 15 %







055 FM Noise 15 %


061 EE Pot J10 B 062 Chan delay alarm N/A

063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




Logic Scheme: ECIIII.1C and ECIIII.3C – Dual 4-wire comms circuit Default Parameter settings

VF Narrowband Parameter File Name: ECIIII1CDN.bat or ECIIII3CDN.bat


999 System Label ECIIII.1C-NB D4W







010 FM Noise 30 %







025 FM Noise 30 %







040 FM Noise 30 %







055 FM Noise 30 %


061 EE Pot J10 B 062 Chan delay alarm N/A

063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.5 YSMAII.2C and YSMBII.2C

Single 4-wire communications by default




YSMAII.2C and YSMBII.2C – Functional details Requires top I/O module

Function Audio

channel 4W Comms

circuit

Comms Connections


Modem 1

A Tx: 3, 4 Rx: 1, 2

- - N/A

Acc ‘A’ or Blocking ‘B’

2 2A 3A, 4A T15

Intertrip 3

1A 1A, 2A T40 4

Comms Alarm

ANC 1A

Common Alarm

ANC 2A

Common Alarm

ANC 3A

Channel allocation schematic for YSMAII.2C and YSMBII.2C

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4


I/O module A

Channel 1 - Modem Channel 2 – Acc / Block



Connections for YSMAII.2C and YSMBII.2C



TBB -1 + OUT 1B

TBA -2 – TBB -2 –


TBB -3 + OUT 2B

TBA -4 – TBB -4 –

TBA -5 + IN 1A

Intertrip Input

TBB -5 + IN 1B

TBA -6 – TBB -6 –

TBA -7 + IN 2A

Acceleration or Block Input

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Alarm

TBB -13 Com

ANC 1B TBA -14 NC TBB -14 NC


TBA -16 Com

ANC 2A Common Alarm

TBB -16 Com



TBA -19Com

ANC 3A Common Alarm

TBB -19 Com



TBA -22 + OUT 3A Acc /Block Output 1

TBB -22 + OUT 3B

TBA -23 – TBB -23 –

TBA -24 + OUT 4A Acc /Block Output 2

TBB -24 + OUT 4B

TBA -25 – TBB -25 –

Notes:




Comms Alarm includes Comms Urgent, Comms Non-urgent alarms

Common Alarm includes Comms Alarm plus Equipment Fail alarm


Logic Scheme: YSMAII.2C and YSMBII.2C Default parameter settings

VF Wideband Parameter File Name: YSMAII2CW.bat or YSMBII2CW.bat


999 System Label YSMAII.2C-WB or YSMBII.2C-WB

001 Channel 1 Modem






010 FM Noise 75 %







025 FM Noise 19 %







040 FM Noise 15 %







055 FM Noise 15 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




Logic Scheme: YSMAII.2C and YSMBII.2C Default parameter settings

VF Narrowband Parameter File Name: YSMAII2CN.bat or YSMBII2CN.bat


999 System Label YSMAII.2C-NB / YSMBII.2C-NB

001 Channel 1 Modem






010 FM Noise 70 %







025 FM Noise 28 %







040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.6 YSMUII.2C

Single 4-wire communications by default




YSMUII.2C– Functional details Requires top I/O module

Function Audio

channel 4W Comms

circuit

Comms Connections


Modem 1

A Tx: 3, 4 Rx: 1, 2

- - N/A

Not Used 2 N/A

Intertrip 3

1A 1A, 2A T40 4

Comms Alarm

ANC 1A

Common Alarm

ANC 2A

Common Alarm

ANC 3A

Channel allocation schematic for YSMUII.2C

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4


I/O module A

Channel 1 - Modem Channel 2 – Not used



Connections for YSMUII.2C



TBB -1 + OUT 1B

TBA -2 – TBB -2 –


TBB -3 + OUT 2B

TBA -4 – TBB -4 –

TBA -5 + IN 1A

Intertrip Input

TBB -5 + IN 1B

TBA -6 – TBB -6 –

TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Alarm

TBB -13 Com



TBA -16 Com

ANC 2A Common Alarm

TBB -16 Com



TBA -19Com

ANC 3A Common Alarm

TBB -19 Com



TBA -22 + OUT 3A

TBB -22 + OUT 3B

TBA -23 – TBB -23 –

TBA -24 + OUT 4A

TBB -24 + OUT 4B

TBA -25 – TBB -25 –

Notes:







Logic Scheme: YSMUII.2C Default parameter settings

VF Wideband Parameter File Name: YSMUII2CW.bat


999 System Label YSMUII.2C-WB






010 FM Noise 75 %








040 FM Noise 15 %







055 FM Noise 15 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




Logic Scheme: YSMUII.2C Default parameter settings

VF Narrowband Parameter File Name: YSMUII2CN.bat


999 System Label YSMUII.2C-NB

001 Channel 1 Modem






010 FM Noise 70 %

016 Channel 2 Not defined







040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




10.7 YEIIII.2C Single 4-wire

Single 4-wire communications only (can alter parameters and jumpers to convert to dual 4-wire)






YEIIII.2C Single 4-wire – Functional details Requires top and bottom I/O modules

Function Audio

channel

4W Comms circuit

Comms Connections


Intertrip A 1

A Tx: 3, 4 Rx: 1, 2

1A 1A to 4A T40 2

Intertrip B 3

1B 1B to 4B T40 4

Comms Alarm Circuit A

ANC 1A

Common Alarm Circuit A

ANC 2A

Common Alarm Circuit A

ANC 3A

Comms Alarm Circuit B

ANC 1B

Common Alarm Circuit B

ANC 2B

Common Alarm Circuit B

ANC 3B

Channel allocation schematic for YEIIII.2C Single 4-wire

Tone unit 1

Tone unit 2

Tone unit 3

Tone unit 4


I/O module A

Channels 1 & 2 Intertrip A

I/O module B

Channels 3 & 4 Intertrip B


Connections for YEIIII.2C Single 4-wire

Comms Link ‘A’


TBA -1 + OUT 1A


TBB -1 + OUT 1B


TBA -3 + OUT 2A


TBB -3 + OUT 2B


TBA -5 + IN 1A


TBB -5 + IN 1B


TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Alarm

Circuit ‘A’

TBB -13 Com

ANC 1B Comms Alarm

Circuit ‘B’ TBA -14 NC TBB -14 NC


TBA -16 Com

ANC 2A Common Alarm

Circuit ‘A’

TBB -16 Com

ANC 2B Common Alarm



TBA -19 Com

ANC 3A Common Alarm

Circuit ‘A’

TBB -19 Com

ANC 3B Common Alarm



TBA -22 + OUT 3A


TBB -22 + OUT 3B


TBA -24 + OUT 4A


TBB -24 + OUT 4B


Note:







Logic Scheme: YEIIII.2C – Single 4-wire comms circuit Default parameter settings

VF Wideband Parameter File Name: YEIIII2CSW.bat


999 System Label YEIIII.2C-WB S4W







010 FM Noise 15 %







025 FM Noise 15 %







040 FM Noise 15 %







055 FM Noise 15 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




Logic Scheme: YEIIII.2C – Single 4-wire comms circuit Default parameter settings

VF Narrowband Parameter File Name: YEIIII12CSN.bat


999 System Label YEIIII.2C-NB S4W







010 FM Noise 30 %







025 FM Noise 30 %







040 FM Noise 30 %







055 FM Noise 30 %



063 Year 2006 064 Date 02/20



069 Reset Log

Hidden Parameters




11 Digital Logic schemes and Default parameter settings

11.1 EDBIAI.1C and EDBIAI.4C



Settings are identical for EDBIAI.1C (Single PSU Logic) and EDBIAI.4C (Dual PSU Logic)

Function Inputs Outputs Trip Timing

Block 1A 1A , 2A

T10 (Solid state output) T15 (Relay output)

Intertrip A 2A 3A, 4A

Accelerate 1B 1B, 2B

Intertrip B 2B 3B, 4B

Cascade lockup Inhibit Intertrip A

3A

Cascade lockup Inhibit Intertrip B

3B

Comms Urgent ANC 1A

Comms Non-urgent

ANC 2A


Comms Urgent ANC 1B Comms

Non-urgent ANC 2B

Equipment Fail ANC 3B

Functional diagram of RFL 9745 Digital with EDBIAI.1C and EDBIAI.4C Logic Scheme

Function 1

Function 2

Function 3

Function 4

Digital Communications

Link at 64kbps X.21, G.703, E1

C37.94 ‘short haul’ fibre, LED or Laser fibre link

Blocking

Intertrip A

Acceleration

Intertrip B


Connections for EDBIAI.1C and EDBIAI.4C


TBA -1 + OUT 1A Block Output 1

TBB -1 + OUT 1B Accelerate Output 1

TBA -2 – TBB -2 –



TBA -4 – TBB -4 –

TBA -5 + IN 1A

Block Input

TBB -5 + IN 1B Accelerate Input

TBA -6 – TBB -6 –

TBA -7 + IN 2A Intertrip A Input

TBB -7 + IN 2B Intertrip B Input

TBA -8 – TBB -8 –

TBA -9 + IN 3A

Cascade Lockup Inhibit Intertrip A

TBB -9 + IN 3B

Cascade Lockup Inhibit Intertrip B TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Urgent

Alarm

TBB -13 Com

ANC 1B Comms Urgent



TBA -16 Com


Alarm

TBB -16 Com

ANC 2B Comms Non-urgent



TBA -19 Com


Alarm

TBB -19 Com




TBA -22 + OUT 3A Intertrip A Output 1

TBB -22 + OUT 3B

Intertrip B Output 1 TBA -23 – TBB -23 –


TBB -24 + OUT 4B Intertrip B Output 2

TBA -25 – TBB -25 –

Note: Intertrip Input is Intertrip Send



Logic Scheme: EDBIAI.1C and EDBIAI.4C Default Parameter Settings

Digital Parameter File Name: EDBIAI1C.bat or EDBIAI.4C


999 System Label EDBIAI.1C or .4C

011 Functions 1-7 Digital

012 Major Data Error 6, 500

013 Minor Data Error 400, 200000

014 Alarm BER 1E-04


062 Chan delay alarm 8 ms 063 Year 2006

064 Date 02/20 065 Time 20:16:11

066 Hour Adjust 0 067 Local Address 111

068 Remote Address 111 069 Reset Log

Hidden Parameters

186 #Oks Resets Minor 30

187 #Oks Resets Major 30

188 Maximum Jitter 30.0us

189 #Drop Re-frame 3

190 #CRC out sync 30

191 # Accept Message 3 (or 4 if link has high noise levels. See 6.4.1)

192 Upper freq limit 64320 - 71000

193 Lower freq limit 50000 - 63680


11.2 EDIIII.1C and EDIIII.4C



Settings are identical for EDIIII.1C (Single PSU Logic) and EDIIII.4C (Dual PSU Logic)


Intertrip 1 1A 1A , 2A


Intertrip 2 2A 3A, 4A

Intertrip 3 1B 1B, 2B


Cascade lockup Inhibit Intertrip 1 & 2

3A

Cascade lockup Inhibit Intertrip 3 & 4

3B

Comms Urgent ANC 1A

Comms Non-urgent

ANC 2A


Functional diagram of RFL 9745 Digital with EDIIII.1C and EIIIII.4C Logic Scheme

Function 1

Function 2

Function 3

Function 4




Intertrip 1

Intertrip 2

Intertrip 3

Intertrip 4

I/O Module

A

I/O Module

B


Connections for EDIIII.1C and EDIIII.4C


TBA -1 + OUT 1A

Intertrip 1 Output 1

TBB -1 + OUT 1B

Intertrip 3 Output 1 TBA -2 – TBB -2 –

TBA -3 + OUT 2A


TBB -3 + OUT 2B


TBA -5 + IN 1A Intertrip 1 Input

TBB -5 + IN 1B Intertrip 3 Input

TBA -6 – TBB -6 –

TBA -7 + IN 2A Intertrip 2 Input

TBB -7 + IN 2B Intertrip 4 Input

TBA -8 – TBB -8 –

TBA -9 + IN 3A


Intertrips 1 & 2

TBB -9 + IN 3B


Intertrips 3 & 4 TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Urgent

Alarm

TBB -13 Com

ANC 1B Not used TBA -14 NC TBB -14 NC


TBA -16 Com


Alarm

TBB -16 Com



TBA -19 Com


Alarm

TBB -19 Com



TBA -22 + OUT 3A


TBB -22 + OUT 3B


TBA -24 + OUT 4A


TBB -24 + OUT 4B


Note: Intertrip Input is Intertrip Send



Logic Scheme: EDIIII.1C and EDIIII.4C Default Parameter Settings

Digital Parameter File Name: EDIIII1C.bat or EDIIII.4C


999 System Label EDIIII.1C or .4C




014 Alarm BER 1E-04



064 Date 02/20 065 Time 20:16:11



Hidden Parameters






191 # Accept Message 3 (or 4 if link has high noise levels. See 6.4.1)

192 Upper freq limit 64320 – 71000

193 Lower freq limit 50000 - 63680


11.3 SDIIII.1E and SDIIII.4E



Settings are identical for SDIIII.1E (Single PSU Logic) and SDIIII.4E (Dual PSU Logic)

Functionality These specific logics have been optimised for use with installations where the backbone of the

communications system comprises an SDH network, in particular providing operational continuity and

the avoidance of alarm generation in the event of comms restoration after a switch on the network with a

break not exceeding 50ms.

SDIIII.1E and SDIIII.4E incorporate the following significant features:

Optimised for use with SDH comms infrastructure.

Message accepts (parameter 191) set to 4 by default, providing enhanced security.

Alarm logic modified to mask BER alarms during and immediately after comms alarm situation.

Trips 1 and 2 (designated as ‘T’ Trips) outputs will not latch closed, but will reopen should there be

a comms failure at the same time as a trip is being received. Note: it is not normal UK practice to

use this type of non-latching trip for intertripping applications as any disturbance on the comms

link once the trip has been received will permit the trip output contacts to reopen. The use of this

function must be used at the discretion of the scheme protection engineer. A ‘T’ Trip may also be

used for a Blocking function.

Trips 3 and 4 (designated as ‘I’ Trips) outputs will latch closed should there be a comms failure at

the same time as a trip is being received. It is normal UK practice to use this type of latching trip

for intertrip applications. An ‘I’ Trip may also be used for an Acceleration function.

SDIIII.1E and SDIIII.4E incorporate the following functionality:

Guard before trip: Guard before trip (GBT) logic ensures that comms are healthy before accepting any

trip. GBT logic is also performed during the system power-up; i.e. a trip signal that is presented during

the 9745 power-up will be blocked. GBT timers ensure that comms are established for 5ms before

accepting any trips.

Input debounce: A debounce time of 2ms is provided for each input at Timer 11-14.

SDH switch. This logic is adapted for use on SDH networks, particularly covering the event of a switch

on the comms network (eg a comms break / remake scenarios as in switching fibre rings).

Secondary GBT timers provide 52ms decay time. This prevents loss of guard during an SDH switch. This

window is typically 25ms but is potentially up to 50ms. As soon as the SDH network is healed, comms

are re-established without waiting for any further GBT timers. Any trip initiated during this window will

be transmitted upon restoration of comms.

Auto test. SDIIII1E.mhx and SDIIII4E.mhx include an Auto Test circuit in the alarm logic. In the event

of Address or Checkback Test failure, this enhanced feature will repeat Auto Test until test passes

(default = 5 seconds in cycle). This design is to avoid Address or Checkback Test failure maintaining an

alarm condition until "next test" cycle, which is generally set to 1 minute but could be as long as 24

hours.

Security & Dependability. The core of the new logic is maintained as default RFL inc. digital logic. The

S&D results for this logic are better the default, with an improvement in dependability resulting from the

52ms GBT decay time, and a significant increase in security by setting the Message accept (parameter

191) to 4. This increases both steady state and impulse security by several orders of magnitude, but only

increases trip time by 0.25ms.


BER alarm. The definition of BER (bit error rate) is the number of erroneous bits received divided by the

total number of bits transmitted. The BER alarm logic is designed to allow the accrued error rate to fall

below the alarm setting (default 10-E4) during a 50ms loss of comms. The BER warning outputs are

masked whenever a comms alarm is present. Once the comms alarm clears (i.e. comms is restored), the

BER warning is masked for an additional time period set by Timer 3 + Timer 4. This avoids a BER

warning output operating in the event of an SDH switch, or on restoration of power. Once T3 and T4 are

timed out, any BER warning is delayed by Timer 1 + Timer 2 only.

Alarm Timer Values. The default alarm timer values (ie alarm output relay delay timers) are as follows:

For each alarm, the values shown are attack, decay times in ms.

Timer 1 set to 1,1 Comms warning timer 1

Timer 2 set to 1000,100 Comms warning timer 2

Timer 3 set to 10000,00 BER mask timer 1

Timer 4 set to 10000,00 BER Mask timer 2

Timer 5 set to 100,100 Comms alarm timer

Timer 6 set to 100,100 Outage timer

Timer 7 set to 100,100 Hardware alarm timer



Intertrip 1 1A 1A , 2A


‘Intertrip 2 3A 3A, 4A



Alarm Alarm Outputs Alarm Functions

Comms warning ANC 1A, ANC1B Alarm BER

Comms Alarm ANC 2A, ANC 2B

Major error, Minor error, Clock error, Frame error, Address fail, Checkback

failure

Hardware Alarm ANC 3A, ANC 3B CPU fail,

Buss error, Config error, Low power

Functional diagram of RFL 9745 Digital with SDIIII.1E and SDIIII.4E Logic Scheme

I/O

Module A

I/O

Module B

Function 1

Function 2

Function 3

Function 4




Intertrip 1

Intertrip 2

Intertrip 3

Intertrip 4


Connections for SDIIII.1E and SDIIII.4E


TBA -1 + OUT 1A Trip 1 Output 1

TBB -1 + OUT 1B Trip 3 Output 1

TBA -2 – TBB -2 –



TBA -4 – TBB -4 –

TBA -5 + IN 1A Trip 1 Input

TBB -5 + IN 1B Trip 3 Input

TBA -6 – TBB -6 –

TBA -7 + IN 2A

TBB -7 + IN 2B

TBA -8 – TBB -8 –

TBA -9 + IN 3A Trip 2 Input

TBB -9 + IN 3B Trip 4 Input

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms Warning

TBB -13 Com

ANC 1B Comms Warning TBA -14 NC TBB -14 NC


TBA -16 Com

ANC 2A Comms Alarm

TBB -16 Com

ANC 2B Comms Alarm TBA -17 NC TBB -17 NC


TBA -19 Com

ANC 3A Hardware Alarm

TBB -19 Com

ANC 3B Hardware Alarm TBA -20 NC TBB -20 NC



TBB -22 + OUT 3B

Trip 4 Output 1 TBA -23 – TBB -23 –



TBA -25 – TBB -25 –

Note: Trip Input is Intertrip Send

Trip Output is Intertrip Receive


Logic Scheme: SDIIII.1E and SDIIII.4E Default Parameter Settings

Digital Parameter File Name: SDIIII1E.bat or SDIIII4E.bat


999 System Label SDIIII.1E or .4E




014 Alarm BER 1E-04



064 Date 10/20 065 Time 20:16:11



Hidden Parameters






191 # Accept Message 4

192 Upper freq limit 71000

193 Lower freq limit 50000


11.3 YDBIAI.1E and YDBIAI.2E


These logics are identical except that Issue .1E utilises a single I/O module (A) and Issue .2E utilises two

I/O modules, A & B

Functionality

The functionality of YDBIAI.1E and YDBIAI.2E are the same as SDIIII.1E (refer to

previous section).

The alarm configuration is specific for YEDL schemes.

* Functional diagram of RFL 9745 Digital with YDBIAI.1E* is identical except that Block, Acceleration and Intertrips 1 and 2 are all on I/O Module A

Function Inputs

YDBIAI.1E

Inputs YDBIAI.2E

Outputs YDBIAI.1E

Outputs YDBIAI.2E Trip Timing

Intertrip 1 1A 1A 1A 1A , 2A


‘Intertrip 2

2A 3A 2A 3A, 4A

Intertrip 3 3A 1B 3A 1B, 2B

Intertrip 4 4A 3B 4A 3B, 4B

Alarm

Alarm

Outputs YDBIAI.1E

Alarm Outputs

YDBIAI.2E Alarm Functions

Comms / Address Alarm

ANC 1A ANC 1A ANC1B

Major error, Minor error, Clock error, Frame error, Address fail,

Checkback failure, BER, Channel delay

Common Alarm

ANC 2A ANC 2A ANC 2B

As Comms / Address Alarm plus Conf error, Bus error, CPU fail and

LPWR

Common Alarm

ANC 3A

ANC 3A ANC 3B

As above

Functional diagram of RFL 9745 Digital with YDBIAI.2E* Logic Scheme

Function 1

Function 2

Function 3

Function 4




Block

Intertrip 1

Acceleration

Intertrip 2


Connections for YDBIAI.1E

I/O module ‘A’ I/O module ‘B’ Not Used

TBA -1 + OUT 1A Block Output

TBA -2 –

TBA -3 + OUT 2A Intertrip A Output

TBA -4 –

TBA -5 + IN 1A Block Input

TBA -6 –


TBA -8 –

TBA -9 + IN 3A Accelerate Input

TBA -10 –

TBA -11 + IN 4A Intertrip B Input

TBA -12 –

TBA -13 Com

ANC 1A Comms / Address

Alarm

TBA -14 NC

TBA -15 NO

TBA -16 Com

ANC 2A Common Alarm

TBA -17 NC

TBA -18 NO

TBA -19 Com

ANC 3A Common Alarm

TBA -20 NC

TBA -21 NO

TBA -22 + OUT 3A Accelerate Output

TBA -23 –

TBA -24 + OUT 4A Intertrip B Output

TBA -25 –


Connections for YDBIAI.2E




TBA -2 – TBB -2 –



TBA -4 – TBB -4 –

TBA -5 + IN 1A

Block Input

TBB -5 + IN 1B Accelerate Input

TBA -6 – TBB -6 –


TBB -7 + IN 2B Intertrip B Input

TBA -8 – TBB -8 –

TBA -9 + IN 3A

TBB -9 + IN 3B

TBA -10 – TBB -10 –

TBA -11 + IN 4A

TBB -11 + IN 4A

TBA -12 – TBB -12 –

TBA -13 Com

ANC 1A Comms / Address

Alarm

TBB -13 Com

ANC 1B Comms / Address



TBA -16 Com

ANC 2A Common Alarm

TBB -16 Com

ANC 2B Common Alarm TBA -17 NC TBB -17 NC


TBA -19 Com

ANC 3A Common Alarm

TBB -19 Com

ANC 3B Common Alarm TBA -20 NC TBB -20 NC



TBB -22 + OUT 3B

Intertrip B Output 1 TBA -23 – TBB -23 –


TBB -24 + OUT 4B Intertrip B Output 2

TBA -25 – TBB -25 –

Note: Trip Input is Intertrip Send

Trip Output is Intertrip Receive


Logic Scheme: YDBIAI.1E and YDBIAI.2E Default Parameter Settings

Digital Parameter File Name: S01545PA.bat or S01538PA.bat


999 System Label YDBIAI.1E or .2E




014 Alarm BER 1E-04



064 Date 10/20 065 Time 20:16:11



Hidden Parameters






191 # Accept Message 4

192 Upper freq limit 71000

193 Lower freq limit 50000


12 System Maintenance and Upgrades

System software version 5.2 may be downloaded onto any 9745 with CPU 107330-20, 107330-1 or

earlier using file S9745r09.mhx.

System software version 7.0 or 7.2 may be downloaded onto any 9745 with CPU 107335-1 using

file s9745r201.mhx or s9745r203 respectively

There are three procedures to reload or upgrade the system software:

1. For a healthy 9745

2. For a crashed 9745

2.1. if the original logic and parameter files are available

2.2. if the original logic and parameter files are unavailable

12.1 Upgrade/Reload System software on a healthy 9745

This procedure is a controlled system software upgrade, and can only be carried out if the original

logic and parameter files are available (they can be saved from the equipment in advance, if

required). It is recommended that this is carried out at a baud rate of 19200.

Procedure:

1. Change the 9745 to communicate via the RS232 port at 19.2k Baud

* From the 9745 Front Panel, execute the following sequence of pushbuttons:

* Level, then Up or Down to select April Baud Rate, then Enter.

* Use the Up and Down buttons to select "19200", Enter.

2. Start PC April Lite program.

3. Open April Lite Menu

* Click Terminal, Connect (response: "Connection Succeeded")

* Type "H", Enter (the 9745 should respond with a full HELP menu)

4. Select the PC COM port (this step does not need to be repeated for each chassis)

* Click Setup, Com Options

* Select proper COM port (COM1, COM2, etc.). Select "8" Data Bits, "None" Parity, and "1" Stop

Bits, Baud rate 19200, ensure that the Connect Type, Direct checkbox is checked. Flow Control

Xon/Xoff. Click OK.

5. Select Upload to 9745>Upload System File. Browse to the location of new file ‘s9745r09.mhx’

for Version 5.2, file ‘s9745r201.mhx’ for Version 7.0 or file s9745R203 for Version 7.2. Click

Send. When the message box ‘Successful Upload file’ appears, click OK the Exit.

6. Display will indicate SETUP REQUIRED, indicating that it is necessary to reload the parameter

file.

Select Upload to 9745>Upload Parameter File. Browse to the location of original or saved

parameter file Click Send. When the message box ‘Successful Upload file’ appears, click OK the

Exit.

Note: If the original system software was version 4.81 the baud rate may have automatically reset to

2400 or to another baud rate. If this is occurs, when attempting to use April Lite the display will

respond with non-alpha characters e.g. $$$$ etc. To correct this, disconnect the PC from the 9745,

reset the baud rate using April Lite to 9600 or another setting using the procedure in point 4 above,

then reconnect.


12.2 Upload/Reload System software on a crashed 9745

A 9745 may crash for the following reasons:

Accidentally loading a logic MHX file rather than a System File.

The file being uploaded was corrupted, or of the wrong type.

The upload was disrupted.

When a 9745 crashes it will display “DOWNLOAD REQUIRED” and automatically boot down to

a 2400 baud rate. You must disconnect your laptop, reset the “COMOptions” on April Lite to 2400

baud and reconnect to the 9745. (See also note in Section 12.1 Paragraph 6 above).

Option 1: If original logic & parameter files are available – this is the preferred method.

Click on “Upload to 9745” and select “Upload System File from BIOS Mode.” Select the correct

System file and continue with the restore. It will take approximately 64 minutes to restore.

Reload new copies of the logic and parameter files and set up in accordance with normal

commissioning procedures.

Option 2: If original logic & parameter files are not available.

If you do not have access to the original MHX or BAT Files, you may use the “Upgrade” button.

This automatically steps you through a procedure that saves the logic and parameter files that are

already on the equipment , upgrades the System software then reloads the original logic MHX and

parameter BAT files.

Procedure to upgrade using Upgrade function:

1. Start PC April Lite program.

2. Select the PC COM port (this step does not need to be repeated for each chassis)

* Click Setup, Com Options

* Select proper COM port (COM1, COM2, etc.). Select "8" Data Bits, "None" Parity, and "1" Stop

Bits, Baud rate 2400, ensure that the Connect Type, Direct checkbox is checked. Flow Control

Xon/Xoff. Click OK.

3. Open Terminal Menu

* Click Terminal, Connect (response: "Connection Succeeded")

* Type "H", Enter (the 9745 should respond with a full HELP menu)

4. Upgrade Sequence and saving existing parameters onto PC

* Click Upgrade, Upgrade 9745 Software

* Click Yes at warning message.

* Saving (downloading) the 9745's Parameters onto the PC

* For a Digital System, "check" the "Digital System" box.

* Rename the filename and select the directory for saving of the Parameter file from the 9745.

* Click Receive button to start the "parameter file download" process.

* After the "Status" field displays "Finished downloading parameter file" (~30 seconds), click

"OK", then "Exit" button.

5. Saving (downloading) the 9745's Custom Logic onto the PC

* Rename the filename and select the directory for saving of the Custom Logic file from the 9745.

* Click Receive button to start the "custom logic file download" process.

* After the "Status" field displays "Finished downloading logic file" (~10 seconds to several

minutes), click "OK", then "Exit" button.


6. Install the new CPU Software

* Navigate to file ‘s9745r09.mhx’ for Version 5.2, or to file ‘s9745r203.mhx’ for Version 7.2. Click

Send.

From this point, the program will automatically sequence the following steps:

7. Uploading the new CPU software to flash memory. On completion click "OK" then "Exit"

8. Upload the saved logic file (or a new logic file, as required) from the PC back into the 9745

memory. When the filename is displayed, click "Send". After completion, click "OK", then "Exit".

9. Upload the saved parameter file (or a new parameter file, as required) from the PC into the 9745

memory. When the filename is displayed, click "Send". On completion, click "OK", then "Exit".

10. When the above steps have been completed, the program will state "Disconnected" in the

Connection Status message box. Click "OK". Restore Baud rate on equipment and April Lite to

9,600 or 19200 as required. Procedure complete.

12.3 Upgrade 9745VF Narrowband to Wideband

Wideband VF communications modules only operate with system software version 7.0 and up on

CPU 107335-1, or with system software version 5.2 on all earlier CPUs; together with the relevant

wideband parameter settings. If a 9745 is to be upgraded from narrowband to wideband, the

following procedure should be adopted:

Record frequency and address settings from the equipment to be upgraded.

If the system software is not version 5.2 or 7.# as required, upgrade using the procedure in

Section 12.1.

Ensure jumper settings on new wideband module are correct for the application as detailed

in table in Section 4.5.

For EA approved logic schemes, upload the correct wideband parameter file selected from

the table in Section 7.2

For non-EA approved logic schemes: a) modify the parameter settings for Receive

Bandwidth, AM Noise and FM Noise based on data in Section 5.6.1; and b) modify the

Hidden Parameters 181 and 183 based on data in Section 5.6.3. (Alternatively upload a

revised parameter file that has been prepared in advance with wideband settings).

Update the frequencies and address settings to those recorded at the first step.

12.4 Upgrade 9745VF to 9745 Digital

Any 9745 VF can be upgraded to digital operation by replacing the Audio Communications module

with a Digital communications module plus appropriate digital interface. It is recommended that the

system software should be upgraded to the latest version (refer to Section 12.1). A digital logic

scheme should be selected and the appropriate logic and parameter files loaded (refer to table in

Section 7.2).

Note: It is recommended that this should be carried out by RFL Communications plc. This enables

equipment to be fully tested on completion.

12.5 Upgrade battery backed CPU using BEM (Battery Elimination Module)

It is highly recommended that all 9745s fitted with batteries should be upgraded by fitting a Battery

Elimination Module. This requires the CPU module to be removed and modified according the

following procedure: (For drawing see RFL Electronics Inc. Drawing No. 107316-D 25 April

2002):

1. Isolate chassis from all power.

2. Disconnect ribbon cable and then remove CPU module from chassis.


3. Remove battery from CPU module and discard used battery according to local recycling

policies. Remove connecting wires.

4. Cut and remove R7 on the CPU module. This eliminates the low battery alarm.

5. Remove screw in middle front of CPU module; save screw and install spacer (P/N103227)

in screw's position on module.

6. Remove U20 from its socket and install in corresponding socket on BEM (daughter card).

7. Match the notch on the U20 with the arrow on the BEM.

8. Plug BEM into socket for U20 on CPU module and secure to spacer using screw from step

4.

9. Place J1 jumper on daughter card into "norm" position.

10. Install CPU module back in chassis; reconnect the ribbon cable to bottom of

communications module; restore power to chassis.