KE2 Compressor Sequencer...KE2 WiFi Service Tool (pn 20906) KE2 LDA (pn 21253) Application: Designed for small to mid-sized racks - eliminates overly complicated controls that are

KE2 WiFi Service Tool(pn 20906)

KE2 LDA (pn 21253)

Application:▪ Designed for small to mid-sized racks - eliminates overly

complicated controls that are designed for larger systems.

▪ Easily applied to new or existing installations.

▪ Supports up to 5 stages of loading with onboard relays.

▪ On racks with compressors all of equal HP, will automatically equalize runtime

▪ Racks with compressors of varying HP, it maintains consis-tent suction pressure.

▪ Master View webpages, allows technicians to quickly and easily assess the system’s operation & Review historical per-formance using onboard data logging.

▪ Works as a stand-alone rack controller or in conjunction with KE2 Evaporator Efficiency controllers.

▪ Can limit the amount of defrost load, as dictated by the site’s electrical requirements.

The KE2 Compressor Sequencer is new to KE2 Therm’s refrigeration con-trols suite. Designed for small to mid-sized racks, The KE2 Compressor Sequencer brings the controller’s features in line with the job’s require-ments. It eliminates the necessity of using overly complicated controls designed for larger systems.

The KE2 Compressor Sequencer replaces aging rack controllers or can retrofit racks with existing mechanical controls.

The controller supports up to 5 stages of loading through its onboard relays. Each relay can be configured as the rack’s: Fixed Speed Compres-sor, Compressor Unloader, Digital Scroll Compressor, Master Liquid Line Solenoid, or Hot Gas Defrost Relay.

When applied to racks with compressors all of equal horse power, the controller will automatically equalize the runtime of each compressor. Compressors can also be of various HP. When more than one HP is se-lected the controller will use the stage with the smallest capacity, to maintain consistent suction pressure.

The KE2 Compressor Sequencer includes KE2 Therm’s Master View web-pages, allowing technicians to quickly and easily assess the system’s operation, and review historical performance through onboard data logging.

The compressor sequencer works as a stand-alone rack controller or in conjunction with KE2 Evaporator Efficiency controllers. When applied with the KE2 Evaporator Efficiency controllers the KE2 Compressor Se-quencer can limit the amount of defrost load, as dictated by the site’s electrical requirements.

Part Numbers - Controllers & AccessoriesPart Number Description

KE2 Compressor Sequencer21246 Controller only

Pressure Transducers20201 Pressure Transducer – 0 to 150 psia, 10 ft. leads20202 Pressure Transducer – 0 to 500 psig, 10 ft. leads

Temperature Sensors21230 High temp for discharge at condenser inlet, 15 ft.20199 Standard for all other temp inputs, 10 ft. (black)

Solid State Relay

21304 Solid State Relay for Compressor Sequencer (used to control 5th compressor stage or digital scroll

© Copyright 2018 KE2 Therm Solutions, Inc., Washington, Missouri 63090

Q.2.43April 2018

KE2 Compressor Sequencer pn 21710

Quick Start GuideThis reference should remain on site with the installed KE2 Compressor Sequencer

Parts List - Included The following are included in the KE2 Compressor Sequencer kit 21710:

(1) KE2 Compressor Sequencer 120/208-240 VAC controller(1) high voltage safety shield(1) 15’ high-temperature sensor (1) 0-150 psia pressure transducer with 10ft. lead(1) 0-500 psig pressure transducer with 10ft. lead(1) 10 ft. temperature sensor for suction temperature (4) 90 degree quick disconnects (4) self-tapping screws(2) course thread screws (1) fine thread machine screw with lock washer(4) wire ties (rated for high & low temp)(1) 5-position pluggable connector (4) 3-position pluggable connectors (for power in, transducer & 3A relay)(9) 2-position pluggable connectors (for sensors & digital input, analog output)(1) 120 Voltage jumper(1) 208-240V Voltage jumper (already installed on controller)

Other Supplies - Not IncludedThe KE2 Compressor Sequencer installation requires standard truck stock items. A list of items is provided.

Conduit to go between the controller and the electrical panel (2) Conduit connectors (straight or elbow as required) High voltage wires matched to the number of compressors, liquid line so-

lenoid (if used), and the controller Wire labeling (numbers, colors, etc.) Additional wire ties 18 gauge twisted shielded pair (if extending sensor wires)

Before you begin:NOTE: After the controller is wired, the KE2 Compressor Sequencer is setup using the controller’s onboard webpage.

To access the webpage on the controller you will need a laptop and Ethernet cable, or a mobile device and either the KE2 LDA communica-tion device, or the KE2 WiFi Service Tool. (See page 3)

Q.2.43 April 2018Page 2

KE2 Compressor SequencerQuick Start Guide


D1

D3

D2

Grou

nd

T2 A

ir O

ption

al

T3 D

ischa

rge

T1 Su

ctio

n

GREE

N (S

IGNA

L)

Digi

tal S

crol

l Unl

oade

r (0

-10V

ANA

LOG

OuT)

RED

(+5V

)BL

ACK

(GRO

UND)

PT SH

DIGITAL INPUTS

ROUTER / SWITCH

CAT5e CABLE(ETHERNET)

RJ 45

L1

NO NCCOM

NO NCCOM

COM

NONC

COM

NONC

LINE

NEUTRALGROUND

CONTROLLER POWER INPUT

KE2 COMPRESSOR SEQUENCER - Fixed Speed Compressors

COMP STAGE 4

COMP STAGE3

COMP STAGE 2

COMP STAGE 1

VOLTAGE JUMPER208-240V Default

L1

CON2

Compressor 2

CON1

Compressor 1

L1

L1

L1

– +

CON3Compressor 3

CON4Compressor 4

Sign

al

– +

PT DH

GREE

N

RED BLAC

K

+14V

EXTERNAL DIGITAL SWITCH

12 VDC; 100 OHMS 120 AMPS

CON5

Compressor 5

L2

LEGEND

Digital Scroll Unloader − Analog output to control digital scroll compressor.

PT SH − 0-150 psia pressure transducer for suction header

T1 Suction − -50° to 150°F Tempera-ture sensor for suction header

T2 Air − Optional -50° to 150°F tempera-ture sensor for space temperature. Allows �oating suction control feature.

T3 Discharge − 0° to 300°F temperature sensor for discharge header

PT DH − 0 to 500 psig pressure transducer for discharge header

Wiring the Controller

D1

D3

D2

Grou

nd

T2 A

ir O

ption

al

T3 D

ischa

rge

T1 Su

ctio

n

GREE

N (S

IGNA

L)

Digi

tal S

crol

l Unl

oade

r (0

-10V

ANA

LOG

Out)

RED

(+5V

)BL

ACK

(GRO

UND)

PT SH

DIGITAL INPUTS

ROUTER / SWITCH

CAT5e CABLE(ETHERNET)

RJ 45

L1

NO NCCOM

NO NCCOM

COM

NONC

COM

NONC

LINE

NEUTRALGROUND

CONTROLLER POWER INPUT

KE2 COMPRESSOR SEQUENCER - Compressor with Unloaders

COMP STAGE 4

COMP STAGE3

COMP STAGE 2

COMP STAGE 1

VOLTAGE JUMPER208-240V Default

L1

CON2

Unloader 1

CON1

Compressor 1

L1

L1

L1

– +

CON3Unloader 2

CON4Compressor 2

Sign

al

– +

PT DH

GREE

N

RED BLAC

K

+14V

EXTERNAL DIGITAL SWITCH

12 VDC; 100 OHMS 120 AMPS

CON5

Compressor 3

L2

NOTE : Unloaders are wired to the Normally Closed contacts




Setup the controller by going to the Setpoints page.

❶ After the controller is wired, the KE2 Compressor Sequencer is setup using the controller’s onboard webpage. To access the webpage on the controller you will need a laptop and Ethernet cable, or a mobile device and either the KE2 LDA com-munication device, or the KE2 WiFi Service Tool.

Power Up & Enter Setpoints

thermsolutions

ENTER

BACK

CompressorSequencer

®

Controller wired and ready

Ethernet Cable

Computer

thermsolutions

ENTER

BACK

CompressorSequencer

®

Superheat0.0 F

Suct Pressure96.2 F

Suct Temp87.7 F

Superheat0.0 F

Suct Pressure96.2 F

Suct Temp87.7 F


Ethernet Cable

Computer, Tablet or Smart Phone

thermsolutionsPWR WIFILANWAN 3G/4G

Ethernet Cablethermsolutions

ENTER

BACK

CompressorSequencer

®


Superheat0.0 F

Suct Pressure96.2 F

Suct Temp87.7 F

Computer, Tablet or Smart Phone

Option A

Option B

Option C

NOTE: Computer requires Static IP. See bulletin Q.5.11

❸ This will take you to the controller’s Home Page. From the Home Page select the Setpoints tab.

❷ Enter the controller’s IP address, into your web browser’s address bar. The IP ad-dress is found on a sticker on the controller.

SpecificationsControllerInput Voltage: 100VAC - 240VAC

Ambient Temp: -40°F to 140°F (-40°C to 60°C)

Operating Temp: -40°F to 140°F (-40°C to 60°C)

Inputs:(3) temperature sensor

(3) digital input

(2) pressure sensor inputs

Relays: (4)10A inductive fan contactor pilot

Digital Input

No function, Compressor Module, Oil Safety Switch, High Pressure Switch, System Off, 2nd Pressure Set Point

Communication: Standard TCP/IP

Pressure Transducer - pn 20201 (10 ft lead) Pressure Range: 0 to 150 psig

Proof Pressure: 450 psi

Burst Pressure: 1500psi


Pressure Transducer - pn 20202 (10 ft lead) Pressure Range: 0 to 500 psig

Proof Pressure: 1000 psi

Burst Pressure: 2500 psi





❹ On the Setpoints page choose Login, in the lower right corner.Default User Name: ke2adminDefault Password: ke2adminClick on Submit.

❺ You will be back on the Setpoints page. Make desired setpoint changes. Click the Save button.

Note: For security reasons, the User Name and Password should be changed from the default. Once your are logged in, go to the Setting page to change the User Name and Password.

❻ On the Setpoints page click System is Off. The button will be yellow.The button will return to its normal color, and the system will start.

Login❻ ❹ ❺

Variables Menu - View OnlyFull Name DescriptionSuCTION PRESSuRE Suction Pressure as read by the controllerCAP % Available horse power currently being utilizedCOmPRESSOR 1 RELAy Current state of the 1st Compressor RelayCOmPRESSOR 2 RELAy Current state of the 2nd Compressor RelayCOmPRESSOR 3 RELAy Current state of the 3rd Compressor RelayCOmPRESSOR 4 RELAy Current state of the 4th Compressor RelayCOmPRESSOR 5 RELAy Current state of the 5th Compressor RelaySuPERHEAT Superheat as calculated by the controllerT1 SuCTION TEmP Suction temperature as measured by the controllerSATuRATION TEmP Saturation temperature as calculated by the controller

Only one of these or the other is displayed, if selected.

T2 mONITOR Temperature to be monitored that is selected by the installerINT COmP TEmP Input is reading digital scroll’s internal temperature sensor

DISCH PRESSuRE Discharge Pressure as read by the controllerDISCH SuPERHEAT Superheat as calculated by the controllerDISCH TEmP Discharge Temperature sensor reading as measured by the controllerDISCH SAT TEmP Discharge Temperature as read by the controllerDIg 1 STATuS Current status of the Digital Input #1DIg 2 STATuS Current status of the Digital Input #2DIg 3 STATuS Current status of the Digital Input #3IP OCTET 1 The first three digits of the IP addressIP OCTET 2 The second three digits of the IP addressIP OCTET 3 The third three digits of the IP addressIP OCTET 4 The fourth three digits of the IP addressSuBNET mASK OCTET 1 The first three digits of the subnet maskSuBNET mASK OCTET 2 The second three digits of the subnet maskSuBNET mASK OCTET 3 The third three digits of the subnet maskSuBNET mASK OCTET 4 The fourth three digits of the subnet maskFIRmWARE VERSION Current version of the firmware on the controller




SetpointsSetpoint Description Range / Options Default

Fron

t of C

ontro

ller

Thes

e ca

n be

acc

esse

d fr

om fr

ont o

f co

ntro

ller.

All

othe

r set

poin

ts a

re a

c-ce

ssed

on

the

cont

rolle

r’s w

eb p

age.

SuCTION PRESSuRE Suction Pressure setpoint to cycle the compressorsMin 0 psigMost refrigerants: 150 psia; R410A: 300 psig R744: 500 psig

250 psig for R-744, 25 psig for all else

CuT OuT PRESSuRE When below the cut out pressure, system turns offMin 0 psigMost refrigerants: 150 psia; R410A: 300 psig R744: 500 psig

5 psig

2ND SuCTION PRESSuRE

When enabled w. digital input (short across terminals), will control fans to run at this pressure, overriding nor-mal operation until short removed from digital input

Min 0 psigMost refrigerants: 150 psia; R410A: 300 psig R744: 500 psig

50 psig

TEmP uNITS Temperature Units Fahrenheit, Celsius FahrenheitSuC PRESS DIFF Suction Pressure Differential 0.1 to 5.0 psi 2.0 psi

REFRIgERANT Type of refrigerant being used in the system.R404A, R507, R407A,R407C, R422A, R422D, R134A, R22, R717, R438A, R408A, R409A, R407F, R410A, R744, R448A, R450A, R513A

404A

Rela

ys

RELAy#1 Relay controls the 1st stageHG Defr Relay, LLS, Digital Comp*, Fixed Speed, Unloader for Cmp 2, Unloader for Cmp 3, Unloader for Cmp 4, Unloader for Cmp 5

Disabled

RELAy#2 Relay controls the 2nd stageHG Defr Relay, LLS, Digital Comp*, Fixed Speed, Unloader for Cmp 1, Unloader for Cmp 3, Unloader for Cmp 4, Unloader for Cmp 5

Disabled

RELAy#3 Relay controls the 3rd stageHG Defr Relay, LLS, Digital Comp*, Fixed Speed, Unloader for Cmp 1, Unloader for Cmp 2, Unloader for Cmp 4, Unloader for Cmp 5

Disabled

RELAy#4 Relay controls the 4th stageHG Defr Relay, LLS, Digital Comp*, Fixed Speed, Unloader for Cmp 1, Unloader for Cmp 2, Unloader for Cmp 3, Unloader for Cmp 5

Disabled

RELAy#5 Relay controls the 5th stageHG Defr Relay, LLS, Digital Comp*, Fixed Speed, Unloader for Cmp 1, Unloader for Cmp 2, Unloader for Cmp 3, Unloader for Cmp 4

Disabled

* Only one digital compressor Digital Comp ON/OFF requires a solid state relayCOmP HP PER RELAy labels the HP of each compressor 0.1 to 50 HP None

Defro

st

Load mAx LOAD Maximum circuit concurrent load 6,000,000 Btu

15,000 Amps 0

uNITS Units for heater load input Btu/Amps Amps

Refri

gera

tion

SuCTION PRESSuRE(Also available from the front of the controller.)

Target Suction Pressure - Setpoint to cycle the com-pressors

Min 0 psigMost refrigerants: 150 psia; R410A: 300 psig R744: 500 psig

250 psig for R-744, 25 psig for all else

REFRIgERANT(Also available from the front of the controller.)

Type of refrigerant being used in the system.R404A, R507, R407A,R407C, R422A, R422D, R134A, R22, R717, R438A, R408A, R409A, R407F, R410A, R744, R448A, R450A, R513A

404A

mIN COmP RuN TImE Min. run time to keep any compressor relay energized 0 to 240 seconds 60 seconds

mIN COmP OFF TImE Minimum off time to keep any compressor relay de-energized 0 to 240 seconds 60 seconds

mIN COmP SWITCH TImE Min. time between switching compressor on or off 0 to 240 seconds 15 seconds2ND SuCTION PRESSuRE(Also available from the front of the controller.)

When enabled w. digital input (short across terminals), controls fans to run at this pressure, overriding normal operation until short removed from digital input

Min 0 psigMost refrigerants: 150 psia ; R410A: 300 psig R744: 500 psig

50 psig

CuT OuT PRESSuRE(Also available from the front of the controller.)

When below the cut out pressure, system turns offMin 0 psigMost refrigerants: 150 psia; R410A: 300 psig R744: 500 psig

5 psig

mAx PumP OuT TImE Sets time limit to reach cut out pressure 0 to 240 minutes 2 minutes

Aux TEmP TyPE Options for using the auxiliary temperature sensor Off (Disabled) /monitor/2nd liquid temperature for circuit #2 Disabled

TEmP uNITS Temperature Units (can also be accessed from front of the controller) Fahrenheit, Celsius Fahrenheit

mIN SAFETy SuC SH Safety for Minimum Suction Superheat 0 to 50ºF / 0 to 27.8K 0ºF / 0KmAx SAFETy SuC TmP Safety for Maximum Suction Temperature 5 to 90ºF / -15 to 32ºC 90º F / 32ºC

mAx SAFETy PRESSuRE Safety for Maximum Pressure - when exceeded sends Alerts 0 to 500 psig 400 psig




Setpoint Description Range / Options Default

Digi

tal

Inpu

ts DIg IN 1, 2, 3 mODE Sets the function of the Digital Input HG Defr Req, 2nd Pres, Comp Mod, Oil Safety Sw, Hi Pres Switch, Sys Off Disabled

DIg IN 1, 2, 3 STATE Sets whether the switch activates with Open or Closed Open / Closed Closed

Sens

or O

ffset

s Aux TEmP OFFSET An offset added or subtracted from the auxiliary tem-perature sensor reading, if needed -5 to 5 Fº / -2.8 to 2.8K 0 Fº/K

SuCT PRESSuRE OFFSET An offset added or subtracted from the suction line pressure transducer reading, if needed -5 to 5 Fº / -2.8 to 2.8K 0 Fº/K

SuCT TEmP OFFSET An offset added or subtracted from the suction tem-perature sensor reading, if needed -5 to 5 Fº / -2.8 to 2.8K 0 Fº/K

DISCH TEmP OFFSET The offset added or subtracted from the discharge temperature sensor reading, if needed -5 to 5 Fº / -2.8 to 2.8K 0 ºF/K

DISCH PRESS OFFSET An offset added or subtracted from the discharge pressure transducer reading, if needed -5 to 5 Fº / -2.8 to 2.8K 0 ºF/K

Alar

ms

mAx DISCH PRES Turns system of when exceeded 100 to 500 psig 450 psig

mIN SuCTION SH The lowest acceptable superheat. Turns system off when exceeded 5 to 50 ºF / 2.8 to 27.8K 15 ºF / 8.3K

mAx SuCTION SH The highest acceptable superheat 25 to 200 ºF / 13.9 to 111.1K 50 ºF / 27.8K

mIN/mAx SH DELAyThe amount of time, in minutes, before an alarm is initiated when the minimum or maximum superheat setting is surpassed.

0 to 254 minutes Disabled

mAx DISCH TEmP The maximum discharge temperature before an alarm is initiated. Turns off system when exceeded. 25 to 300ºF /-3.9 to 148.9 ºC 268

ºF/131.1ºC

mAx DISCH TEmP DELAy

The amount of time, in minutes, before an alarm is initiated when the Maximum Discharge Temperature setting is surpassed.


mAx DIS PRS DELAyThe amount of time, in minutes, before an alarm is initiated when the Maximum Discharge Pressure set-ting is surpassed.


Setpoints - Continued

Manual MenuName Description Range DefaultmANuAL CONTROL

CLEAR ALARmS Clear all active alarms

FACTORy RESET Reset the controller to the factory default setpoints Reset

WEB PASSWORD RESET Reset the web password to the factory default Reset

KE2 SmART ACCESS mODE Turn KE2 Smart Access on or off Disable, Enable Disable

DHCP mODE Turn DHCP mode on or off Disable, Enable Disable




Critical Alarms: the System is NOT working & Red LED is illuminated Alarm Name Description

*Low Suction Superheat

• If the suction superheat is below the min Suction SH (Minimum Suction Superheat) setpoint for longer than min/max SH Delay (Minimum/ Maximum Superheat Delay)- All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller. - The Red LED on the front Panel will be illuminated- The controller will scroll Low Suction Superheat across the front panel

*High Suction Superheat

• If the suction superheat is below the max Suction SH (Maximum Suction Superheat) setpoint for longer than min/max SH Delay (Minimum/ Maximum Superheat Delay)- All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller. - The Red LED on the front Panel will be illuminated- The controller will scroll High Suction Superheat across the front panel

*High Discharge Temperature

• If the discharge temperature is above max Disch Temp (Maximum Discharge Temperature) setpoint for longer than max Dis Tmp Del (Maximum Discharge Temperature Delay)- All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll High Disch Temperature across the front panel- NOTE: The max discharge temperature alarm turns on at the setpoint and turns off at 18 degrees F below its setpoint.

*High Discharge Pressure

• If the discharge pressure is above the max Disch Pres (Maximum Discharge Pressure) for longer than the max Dis Prs Del (Maximum Discharge Pressure Delay)- All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll High Disch Pressure across the front panel

Discharge Pressure Sensor Alarm

• If the Discharge Pressure Sensor is Alarming, the sensor is shorted, open, or out of range. - All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll Discharge Pres Sensor across the front panel

Discharge Temperature Sensor Alarm

• If the Discharge Temperature Sensor is Alarming, the sensor is shorted or open. - All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll T3 Disch Sensor across the front panel

Suction Pressure Sensor Alarm

• If the Suction Pressure Sensor is Alarming, the sensor is shorted, open, or pressure is out of range. - All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll Pressure Sensor across the front panel

Suction Temperature Sensor Alarm

• If the Suction Temperature Sensor is Alarming, the sensor is shorted or open. - All stages will be turned off- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Red LED on the front Panel will be illuminated- The controller will scroll T1 Suction Sensor across the front panel

* Alarms may be disabled by typing Disabled in the Time Delay field in the Alarms section of the Setpoints page.




Non -Critical Alarms: the System is working and the Amber LED is illuminatedFor each non-critical alarm, the system will continue running

and the controller will try and compensate for the issue.

Alarm Name Description

T2 Aux SensorT2 Monitor

• Auxiliary Temperature Sensor Alarm indicates the sensor is short or Open- The system will continue running and the controller will try and compensate for the issue.- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller. - The Amber LED on the front Panel will be illuminated- The controller will scroll T2 Aux Sensor across the front panel

T2 Aux Sensor Internal Compres-sor Temperature


Settings page of the controller. - The Amber LED on the front Panel will be illuminated- The controller will scroll T2 Aux Sensor across the front panel

Evaporator Communications

• If the Site View Manager is selected, and one or more of the KE2 Evap Site View members are not communicating- The system will continue running and the controller will try and compensate for the issue.- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller. - The Amber LED on the front Panel will be illuminated- The controller will scroll Communication Error across the front panel

High Suction Superheat


Settings page of the controller. - The Amber LED on the front Panel will be illuminated- The controller will scroll High Superheat across the front panel

High Discharge Pressure

• If the discharge pressure is above the max Disch Pres (Maximum Discharge Pressure) for longer than the max Dis Prs Del (Maximum Discharge Pressure Delay)- The system will continue running and the controller will try and compensate for the issue.- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Amber LED on the front Panel will be illuminated- The controller will scroll High Disch Pres across the front panel

Compressor module Alarm

• If a Digital Input is set to function as the Compressor Module (Comp Mod), the Compressor Module Alarm is activated when the digital input receives an active signal, as determined by the Digital Input State. - The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Amber LED on the front Panel will be illuminated- Across the front panel, the controller will scroll Comp module*1 (for Digital Input 1), Comp module*2 (for DI 2) or Comp

module*3 (for DI 3)

Oil Pressure Alarm

• If a Digital Input is set to function as the Oil Safety Switch (Oil Safety Sw), the Oil Pressure Alarm is activated when the digital input receives an active signal, as determined by the Digital Input State.- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Amber LED on the front Panel will be illuminated- Across the front panel, the controller will scroll Oil Safety Alarm *1 (for Digital Input 1), Oil Safety Alarm *2 (for DI 2) or, Oil

Safety Alarm *3 (for DI 3)

High Pressure Safety Switch is Tripped

• If a Digital Input is set to function as the High Pressure Safety Switch, the High Pressure Safety Switch is Tripped Alarm is acti-vated when the digital input receives an active signal, as determined by the Digital Input State.- The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.- The Amber LED on the front Panel will be illuminated- Across the front panel, the controller will scroll High Pres Safety *1 (for Digital Input 1), High Pres Safety *2 (for DI 2) or,

High Pres Safety *3 (for DI 3)




Safety Features : Alarm Name Description

Low Suction Pressure Cut-Out

System is ON• If System is On and the pressure goes below Cut Out Pressure setpoint, all compressor relays will be de-energized. The

controller will maintain current off state until pressure rises Suct Press Diff above the Suction Pressure setpoint as long as the min Comp Offtime has been satisfied

System is OFF• The system may be turned off at any time by using one of three methods: Digital Input, Manual Menu, or Setpoints webpage.

After receiving the System Off command the controller will turn off all but the largest capacity compressor. It will continue to run until the pressure goes below Cut Out Pressure or max Pump Out Time has been reached. If a Digital Scroll has been selected it will always be the last compressor on. The controller will maintain current System Off state until signal has been removed and pressure rises Suct Press Diff above the Suction Pressure setpoint as long as the min Comp Offtime has been satisfied

minimum Safety Suction Superheat

Stand Alone Operation• The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.• The Amber LED on the front Panel will be illuminated• The controller will scroll Min Safety Suc SH across the front panel

utilizing KE2 Evaporator Efficiency controllers• The compressor sequencer will utilize the superheat of the KE2 Evap controllers with EEVs to assist in raising the superheat at

the rack using the following sequence:- Every 5 minutes the Superheat Setpoint of each KE2 Evap controller will be increased 1 degree - If the superheat is able to be maintained 2 degrees above the Min Safety Suc SH the compressor sequencer will lower the

superheat 1 degree every 5 minutes until the setpoint has returned to its original value.- Once all of the KE2 Evap controllers have been returned to their original setpoint values and the superheat reading is main-

taining above the Min Safety Suction Superheat the alarm will be cleared.• The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the


maximum Safety Suction Temp

Stand Alone Operation• The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the

Settings page of the controller.• The Amber LED on the front Panel will be illuminated• The controller will scroll Max Safety Suc Tmp across the front panel

utilizing KE2 Evaporator Efficiency controllers• The compressor sequencer will utilize the superheat of the KE2 Evap controllers with EEVs to assist in lowering the suction

temperature at the rack using the following sequence: - Every 5 minutes the Superheat setpoint of each KE2 Evap controller will be lowered 1 degree - If the temperature decreases the compressor sequencer will increase the superheat 1 degree every 5 minutes until the

setpoint has returned to within 2 degrees of its original value.- Once all of the controllers have been returned to their original setpoint value and the suction temperature reading is main-

taining itself below the Max Safety Suction Temp the alarm will be cleared.• The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the


maximum Safety Pressure

If the discharge pressure is above the Max Safety Pressure for the time provided in the Max Dis Temp Delay:• The controller will unload the next stage to attempt to reduce the pressure

- Wait the time defined by Min Comp Switch Time, then unload next stage- Continue to unload until all stages are off

• The controller will send a notification to the email address or phone number provided in the Address for Alerts field on the Settings page of the controller.

• The Amber LED on the front Panel will be illuminated• The controller will scroll Max Safety Pres across the front panel


Q.2.43 April 2018 Page 10


When applying the controller to a system consisting of fixed speed compressors with or without unloading capabilities, the controller requires the user to assign a relay output for each compressor stage available using the controller’s web pages. (Maximum Stages – 5)

Once the controller setup is completed through the controller’s Mas-ter View web pages, it is ready to turn the System On, or allow Re-frigeration, by either clicking the yellow System is Off button on the Setpoints web page, or using the Manual Menu -> Manual Control option.

When Fixed Suction Pressure and Fixed Speed Compressors are se-lected the controller will use the compressor capacity in HP as defined on the Setpoints Page. Stages will be loaded and unloaded based on the smallest step available. If all available stages are equal the con-troller will automatically select the option with the least amount of runtime.

The Suction Pressure Setpoint will serve as the target pressure the controller works to achieve while in Refrigeration. The Suction Pres-sure Differential determines the pressure above and below the Suc-tion Pressure Setpoint the controller will allow the suction pressure to vary before it makes an adjustment to the compressor capacity.

Once a stage has been loaded or unloaded that stage must remain on or off as determined by the Min Comp Runtime and Min Comp Off-time. Stages of capacity will be made as necessary by the controller, however, it will not load or unload more often than the time defined in the Min Compressor Switch Time.

If the system is maintaining the suction pressure within the normal operating range, which is defined as the Suction Pressure Setpoint +/- the Suction Pressure Differential it will maintain the current capacity.

Mode of Control: Fixed Suction Pressure & Fixed Speed Compressors

Determining Compressor ON / OFF Order

Mode of Control: Fixed Suction Pressure with Digital Scroll Compressors

When applying the controller to a system consisting of fixed speed compressors with or without unloading capabilities and one digital scroll, the controller requires the user to assign a relay output for each compressor stage available using the controller’s web pages.

Once the controller setup has been completed through the control-ler’s Master View web pages, it is ready to turn the System On, or al-low Refrigeration, by either clicking the yellow System is Off button on the Setpoints web page, or using the Manual Menu -> Manual Control option.

The Digital Scroll will serve as the primary stage to provide the most consistent suction pressure possible. Initially the compressor will be started unloaded.

If the pressure rises above the Suction Pressure Setpoint plus the Suction Pressure Differential the Digital Scroll will be loaded by en-ergizing the solenoid.

If the pressure falls below the Suction Pressure Setpoint minus the Suction Pressure Differential it will energize the solenoid to unload the compressor. If the low pressure is maintained the main digital scroll’s compressor relay will be de-energized if the Min Comp Run-time has been met. *

If the Digital Scroll is fully loaded and the pressure exceeds the Suc-tion Pressure Setpoint plus the Differential the next stage will be loaded based on the smallest step available. If all available stages are equal, the controller will automatically select the option with the least amount of runtime. The compressors will continue to be loaded until all compressors are running.

If the pressure falls below Suction Pressure Setpoint minus the Suc-tion Pressure Differential the controller will first unload the Digital Scroll. The pressure will primarily be controlled by loading and un-loading the Digital Scroll.

If that is not sufficient to bring the pressure within the normal operat-ing range, the controller will de-energize the smallest stage, or if all available stages are equal, the controller will automatically select the option with the most amount of runtime.

*The Digital Scroll’s requirements for unloading follow its own ruleset that is not adjustable. It has been designed to be within the limits of the compressor manufacturer, and to ensure that specification is maintained the minimum times for transitioning are not adjustable.




Digital Inputs Sequence

Digital Input mode: Sets Digital Input Function (Complete Mode descriptions on the table below)

Disabled HG Def Required 2nd temp setpoint 2nd suction pressure set point compressor module oil safety switch high pressure safety switch system off

Digital Input Active State: Sets whether the Digital Input performs the selected function (Digital Input Mode) when the input receives an open or shorted signal.

Descriptions of Digital Input Mode OptionsDisabled • Digital input is nonfunctional.

Hot gas Defrost Required

• If the Digital Input receives an Inactive signal the controller will de-energize the relay selected as Hot Gas Defrost Relay.

• If the Digital input receives an Active signal the controller will energize the relay selected as Hot Gas Defrost Relay.

2nd Temp setpoint• If the Digital Input receives an Inactive signal the controller will control to Suction Pressure setpoint.

• If the Digital input receives an Active signal the controller will control to 2nd Suction Pressure set point.

2nd suction pressure Setpoint

• If the Digital Input receives an Inactive signal the compressor module is running normally.

• If Digital Input is receiving an Active signal a compressor module is tripped with an alarm. The Amber LED will be illuminated, and an e-mail will be sent.

• If multiple digital inputs are selected for compressor module, any compressor module input will control in manner described above.

Compressor module

• If the Digital Input receives an Inactive signal the compressor module is running normally.

• If Digital Input is receiving an Active signal a compressor module is tripped with an alarm. The Amber LED will be illuminated, and an e-mail will be sent.

• If multiple digital inputs are selected for compressor module, any compressor module input will control in manner described above

Oil Safety Switch

• If the Digital Input receives an Inactive signal the oil safety switch normal.

• If Digital Input is receiving an Active signal the oil safety switch is tripped with an alarm. The Amber LED will be illuminated, and an e-mail will be sent.

• If multiple digital inputs are selected for Oil Safety Switch, any Oil Safety Switch input will control in manner de-scribed above.

High Pressure Safety Switch

• If the Digital Input receives an Inactive signal the High Pressure safety switch is running normally.

• If Digital Input is receiving an Active signal the High Pressure Safety Switch is in alarm. The Amber LED will be il-luminated and an e-mail will be sent.

• If multiple digital inputs are selected for High Pressure Safety Switch, any High Pressure Safety Switch input will control in manner described above.

System Off• If the Digital Input receives an Inactive signal operate system normally.

• If Digital Input is receiving an Active signal the controller will go to System Off Mode.

There are 3 Digital Inputs available. Each has 2 setpoints needed to configure its functionality.




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bnet

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Controller Navigation

Cont

rolle

r Nav

igat

ion




Firs

t lin

e is

the

fu

nctio

n

Sec

ond

line

is t

he

curr

ent

syst

em

perf

orm

ance

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each

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play

s nu

mbe

r of

us

ers

curr

ently

vi

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is s

peci

fic

cont

rolle

r’s

web

page

.

Sys

tem

ala

rms

and

mes

sage

s ar

e di

spla

yed.

DES

CRIP

TIO

N:

Dis

play

s re

al ti

me

syst

em in

form

atio

n, a

nd s

how

s th

e in

tera

ctio

n of

mul

tiple

sys

tem

con

ditio

ns.

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scr

een

look

s at

the

syst

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ondi

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can

hel

p w

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s, sy

stem

per

form

ance

, or

just

offe

r pea

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f min

d th

at th

e sy

stem

is ru

nnin

g pr

oper

ly.

Home Page

Appendix AWebpages

Hom

e Pag

e




Bas

ic (P

ort

25

) K

E2 T

herm

Def

ault

Ser

ver

Upd

ate

firm

war

e.

Ref

er to

Q.5

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E2

Boo

tload

er G

uide

.

Site

and

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swor

d m

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e ch

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er t

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See

pag

e 1

5.

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per

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lick

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but

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(bot

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f pag

e) b

efor

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stin

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Rem

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all

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o no

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by

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erm

.

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alar

ms

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tom

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cont

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PI

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m n

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put

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ny in

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atio

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mai

l add

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an

d su

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DES

CRIP

TIO

N:

The

Sett

ings

pag

e co

ntai

ns c

ontr

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figur

atio

n fo

r e-m

ail a

nd w

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cces

s.

It al

so a

llow

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rs to

cus

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ize

the

Mas

terV

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with

thei

r com

pany

info

rmat

ion.

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tings

pa

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clud

es t

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utto

ns t

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date

the

con

trol

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rese

t po

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to

the

cont

rolle

r, se

nd a

tes

t e-

mai

l, cl

ear d

ata

colle

cted

, and

cle

ar a

larm

s.

Settings Page

Appendix AWebpages

Setti

ngs P

age

Appendix AWebpages




To m

ake

chan

ges

to t

he S

ettin

gs p

age,

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wor

k pa

ge a

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etpo

ints

pa

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ser

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e an

d P

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t be

pro

vide

d.

The

defa

ult

Use

r N

ame:

ke2

adm

in

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e de

faul

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assw

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ke2

adm

in

For

secu

rity

rea

sons

, the

Use

r N

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ould

be

chan

ged

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the

def

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e yo

u ar

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o to

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S

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age

to c

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e th

e U

ser

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e an

d P

assw

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DES

CRIP

TIO

N:

The

Logi

n fe

atur

e pr

even

ts u

naut

horiz

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s to

the

cont

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r.

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user

mus

t en

ter

the

pass

wor

d to

mak

e ch

ange

s to

the

Set

tings

pag

e, N

etw

ork

page

, and

Se

tpoi

nts

page

.

Login Page

Logi

n Pa

ge

Appendix AWebpages




IP A

ddre

ss m

ay

be c

hang

ed to

m

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the

onsi

te

netw

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or

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able

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able

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is D

ynam

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up p

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Sav

es c

hang

es t

o th

e co

ntro

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s ne

twor

k.

DES

CRIP

TIO

N:

Prov

ides

set

up fo

r add

ing

cont

rolle

rs to

an

exis

ting

cust

omer

net

wor

k.

Network Page

Netw

ork P

age

Appendix AWebpages




Act

ive

whe

n O

pen

(i.e.

doo

r op

en)

Act

ive

whe

n C

lose

d

Dig

In 1

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r 3

Mod

e D

isab

led

HG

Def

r R

eq2

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emp

2nd

Pre

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omp

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ule

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Saf

ety

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Hi P

res

Sw

itch

Sys

Off

Dig

ital

Inpu

ts

Rel

ay 1

D

ropd

own

Opt

ions

HG

Def

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elay

LLS

Var

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peed

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omp

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nldr

for

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p 3

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p 5

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ay 2

- 5

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ptio

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elay

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the

sa

me

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1,

exce

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nloa

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pres

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neve

r in

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mpr

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DES

CRIP

TIO

N:

Allo

ws

the

user

to s

etup

the

cont

rolle

r, an

d to

cus

tom

ize

the

cont

rolle

r to

mee

t spe

cific

ap

plic

atio

n ne

eds.

The

KE2

Com

pres

sor S

eque

ncer

beg

ins

in S

yste

m O

ff M

ode.

The

use

r mus

t con

figur

e re

lays

and

re

frig

erat

ion

setp

oint

s to

ens

ure

the

syst

em ru

ns p

rope

rly, t

hen

turn

the

syst

em o

n.

Setpoints Page

Setp

oint

s Pag

e

Appendix AWebpages




The

Site

Vie

w s

how

s a

live

view

of e

ach

cont

rolle

r’s

perf

or-

man

ce

Whe

n th

e co

ntro

llers

ar

e in

the

sam

e ne

twor

k, c

licki

ng o

n th

e co

ntro

ller’

s lo

catio

n w

ill

open

the

web

page

of

that

con

trol

ler.

Each

mem

ber

is

view

ed b

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icki

ng o

n th

e lo

catio

n na

me

in

the

Site

Vie

w M

aste

r’s

list.

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Site

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w M

aste

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ay c

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m

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ll m

em-

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t be

in t

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e. a

ro

uter

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Site

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w m

ay b

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to t

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ontr

olle

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Air

/ E

lect

ric

Hot

Gas

DES

CRIP

TIO

N:

Site

View

pro

vide

s th

e ab

ility

to s

etup

mul

tipl

e co

ntro

llers

in th

e sa

me

netw

ork

into

def

rost

gr

oups

to m

anag

e th

e co

ncur

rent

def

rost

load

by

sett

ing

Capa

city

, gro

up, a

nd D

efro

st

Type

. If t

he u

ser n

eeds

mor

e de

taile

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form

atio

n, o

r to

mak

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just

men

ts,

clic

king

on

the

nam

e of

the

cont

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r, sh

own

in th

e Lo

cati

on c

olum

n, w

ill o

pen

the

Hom

e Pa

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t con

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Hot

Gas

mus

t be

sele

cted

for K

E2 C

ompr

esso

r Seq

uenc

er to

ene

rgiz

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e H

ot G

as D

efro

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elay

.

SiteView Page

Site

View

Pag

e




Exam

ple:

5

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0

Cap

Loa

d10

0

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t P

res

11

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kly

view

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thly

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Cur

rent

act

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tes

the

data

sto

red

on t

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cont

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a C

SV

file

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Dat

e an

d Ti

me

are

pulle

d fr

om t

he c

onne

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co

mpu

ter.

5.46

0

Day

, Cap

acity

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d, a

nd

Suc

tion

Pre

ssur

e ar

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spla

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whe

n m

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ouse

ove

r th

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ta.

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o

DES

CRIP

TIO

N:

The

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phin

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apsh

ot s

how

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Appendix AWebpages

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age




KE2 Therm Solutions 12 Chamber Drive . Washington, MO 63090

1.888.337.3358 . www.ke2therm.com

Enter default information and click Log In button Site: installerPassword: controller’s Mac Address (from sticker on back of controller)

Enable KE2 Smart Access in the Setpoints menu After the initial Introduction Mode setup, press the arrow

to get to Manual Menu.

Press ENTER and the controller will display Enter Password.

Press ENTER and (4) zeros will appear. Use the and

to enter 2222

Press and hold ENTER for 3 seconds.

Press until Smart Access Mode is displayed

Press ENTER and Disabled will be displayed.

Press & hold ENTER for 3 seconds. Red & Amber LEDs will blink.

Press and Enabled will be displayed.

Press & hold ENTER for 3 seconds. Red & Amber LEDs will stop blinking.

go to smartaccess.ke2therm.net

Using your PC, tablet or smartphone, enter http://smartaccess.ke2therm.net in the web browser’s address bar.

KE2 Smart Access - Online Access In 3 Easy Steps

For additional information on KE2 Smart Access, visit:http://ke2therm.com/literature/literature-ke2-smartaccess/See Q.1.34 KE2 Smart Access Setup and Customizing and A.5.89 Purchasing a KE2 Smart Access License.

Introduction to KE2 Smart AccessKE2 Smart Access provides quick and easy, real time access to your refrigera-tion systems, 24/7

Now it’s easier than ever to monitor and adjust your KE2 Compressor Se-quencer remotely. While the KE2 Compressor Sequencer’s free connectiv-ity is still available, KE2 Therm recognizes that some customers prefer the simplicity and convenience of KE2 Smart Access to enjoy the benefits of the controller’s communication capability.

For a nominal monthly fee, KE2 Smart Access provides easy, real time ac-cess to your refrigeration system 24/7. No port forwarding. No VPN.

All the KE2 Compressor Sequencer needs is a physical connection to the network router. Once enabled, KE2 Smart Access quickly connects to your personal web portal, hosted by KE2 Therm, and provides a “customized” dashboard of all the controllers you setup with KE2 Smart Access.

Preliminary Connect the KE2 Compressor Sequencer to the customer’s network.

CAT5 Ethernet Cable

1 2 3 654 7

Link/ACT

100/1000MbpsPOWER

Customer Network

thermsolutions

ENTER

BACK

CompressorSequencer

®

Setup the controller by going to the Setpoints page.

Screen shot of a single KE2 Compressor Sequencer connected through KE2 Smart Access.

Screen shots of KE2 Smart Access dashboard. Controller and system information is displayed for all of the controllers on the portal.

Benefits of KE2 Smart Access KE2 Smart Access auto launches, and often eliminates costly IT support

Doesn’t require port forwarding or a vpn

Customized dashboard lets you view all your controllers on one page

It’s easier than ever to set up every controller you service to provide alarm notifications via text or e-mail

Easy setup of remote monitoring & system control

youtube.com/ke2thermVisit our youTube channel for videos on KE2 Smart Access.

Step 3

Step 2

Step 1

IP-10.10.52.19MAC

00:04:A3:14:E5:92

IP-10.10.52.19MAC

00:04:A3:14:E5:92

installer

Appendix BKE2 Smart Access

Documents

KE2 Compressor Sequencer...KE2 WiFi Service Tool (pn 20906) KE2 LDA (pn 21253) Application: Designed for small to mid-sized racks - eliminates overly complicated controls that are