DS-Tacho4DS-Tacho4 2 About this document This is the Users Manual for DS-Tacho4 Version 1.0.1. 2.1 Legend The following symbols and formats will be used throughout the document. IMPORTANT

DS-Tacho4

Users Manual

Version: 1.0.1

Thank you!

Thank you very much for your investment in our unique data acquisition systems. These are top-quality instrumentswhich are designed to provide you years of reliable service. This guide has been prepared to help you get the most

from your investment, starting from the day you take it out of the box, and extending for years into the future.

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DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft® DEWESoft®

measurement innovation measurement innovation measurement innovation measurement innovation measurement innovation measurement innovation measurement innovation

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Table Of Contents

Table Of Contents1 Notice................................................................................................................................................................................1

1.1 Safety instructions....................................................................................................................................................22 About this document.........................................................................................................................................................4

2.1 Legend......................................................................................................................................................................42.2 Online versions........................................................................................................................................................4

3 Introduction.......................................................................................................................................................................53.1 Scope of Delivery.....................................................................................................................................................5

3.1.1 Sensor..............................................................................................................................................................63.1.2 Probe................................................................................................................................................................63.1.3 Tripod..............................................................................................................................................................63.1.4 Tape.................................................................................................................................................................6

4 Operation..........................................................................................................................................................................74.1 Mounting of the Probe.............................................................................................................................................74.2 Using the Tripod.......................................................................................................................................................84.3 Adjustment of the probes.........................................................................................................................................8

4.3.1 Optional Reflector Types.................................................................................................................................94.4 Automatic gap detection...........................................................................................................................................9

5 Technical.........................................................................................................................................................................105.1 Sensor set-up..........................................................................................................................................................105.2 Sensor plug-in........................................................................................................................................................105.3 Specifications.........................................................................................................................................................105.4 Lemo connector......................................................................................................................................................105.5 Physical Diagram...................................................................................................................................................11

6 Appendix.........................................................................................................................................................................126.1 Documentation version history..............................................................................................................................12

Page I



Notice

1 NoticeThe information contained in this document is subject to change without notice.

CAUTION Dewesoft GmbH. shall not be liable for any errors contained in this document.Dewesoft MAKES NO WARRANTIES OF ANY KIND WITH REGARD TO THIS DOCUMENT, WHETHER EXPRESS OR IMPLIED.DEWESOFT SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.Dewesoft shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory, in connection with the furnishing of this document or the use of the information in this document.

Warranty Information:

A copy of the specific warranty terms applicable to your Dewesoft product and replacement parts can be obtained from your local sales and service office.

To find a local dealer for your country, please visit this link: http://www.dewesoft.com/support.

Support

Dewesoft has a team of people ready to assist you if you have any questions or any technical difficulties regarding the system. For any support please contact your local distributor first or Dewesoft directly.

Austria Slovenia

Dewesoft GmbHGrazerstrasse 7A-8062 KumbergAustria / Europe

Tel.: +43 3132 2252Fax: +43 3132 2252-2

Web: http://www.dewesoft.com

The telephone hotline is availableMonday to Thursday between09:00-12:00 (GMT +1:00)13:00-17:00 (GMT +1:00) Friday:09:00-13:00 (GMT +1:00)

Dewesoft d.o.o.Gabrsko 11a1420 TrbovljeSlovenia / Europe

Tel.: +386 356 25 300Fax: +386 356 25 301

Web: http://www.dewesoft.com

The telephone hotline is availableMonday to Friday between08:00 and 16:00 CET (GMT +1:00)

Restricted Rights Legend:

Use Austrian law for duplication or disclosure.

Dewesoft GmbHGrazerstrasse 7A-8062 KumbergAustria / Europe

Doc-Version: 1.0.1 www.dewesoft.com Page 1/12





http://www.dewesoft.com/support


DS-Tacho4

Printing History:

Version Revision 23Released 2015Last changed: 2. December 2019 09:56

Copyright

Copyright © 2015-2019 Dewesoft GmbH

This document contains information which is protected by copyright. All rights are reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

All trademarks and registered trademarks are acknowledged to be the property of their owners.

1.1 Safety instructions

Your safety is our primary concern! Please be safe!

Safety symbols in the manual

WARNING

Calls attention to a procedure, practice, or condition that could cause body injury or death.

CAUTIONCalls attention to a procedure, practice, or condition that could possibly cause damage to equipment or permanent loss of data.

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Notice

WARNING We recommend to follow carefully the instructions in the technical data sheets.Electronic part, amplifiers: “152” are named SENSORSOptical Fiber “MULTI” reading heads are named PROBESTHE USE, MANIPULATION AND CONNECTIONS OF SENSORS AND PROBES ARE ONLY TO BE PERFORMED BY DEDICATED PROFESSIONALS WHO ARE AWARE OF SAFETY RULES REGULATIONS AND PROCEDURES.The sensors are not to be use in explosive environments.Sensors may contain a low quantity of silicone sealing.Do not place the cable of the sensor on a warm surfaceElectric cable is made for low mobility use.Electrically and mechanically insulate sensor from frame.

The probes consist of a bundle of sheathed (glass) fibers. If the probe is broken, avoid any contact with the mucosa and your eyes, skin or other sensitive parts.

The optical probes are manufactured to comply with the highest quality and roughness requirements; however, as with car tires, where useful life depends on environment and driving style, optical probes have a stress memory.The optical fiber probes finishing can be classified in 3 operation modes; Our support will be happy to provide information and/or give advice:

Sedentary: calm environment, i.e. o fixed test benchNomad: frequently mount and dismount on test benches,Endurance: under harsh environment, very difficult repeated conditions of use.

i.e. fatigue measurements on test benches or on board vehicles.Standard sensors are not prepared to be used at other pressure that atmospheric pressure.Sensors and optical fibers are wear parts classified and sold separately.

Sensors and optical fibers are wear parts classified and sold separately.

Avoid: torsion, traction, pressure, mechanical & thermal shock, acids, i.e. certain solvents need checking.

Observe: operating temperatures, radius of curvature, prefer large bends

Never hold the probe by its nozzle or threading alone

Deterioration or premature wear are signs of an inadequacy between the type of probe and its environment; always look for the best suited probe

In order to clean the active parts, please use a product dedicated for cleaning eyes glasses.

Make sure that distance between end of the probe and the target is enough to avoid any collision.

Sensors are sensitive to the lights, to avoid or minimize any problem of saturation: protect the sensor optical head or reception fiber probe channel of external lights





DS-Tacho4

2 About this documentThis is the Users Manual for DS-Tacho4 Version 1.0.1.

2.1 LegendThe following symbols and formats will be used throughout the document.

IMPORTANTGives you an important information about a subject.Please read carefully!

HINT

Gives you a hint or provides additional information about a subject.

EXAMPLE

Gives you an example to a specific subject.

2.2 Online versionsThe most recent version of this manual can be downloaded from our homepage:http://www.dewesoft.com/download#Manuals





http://www.dewesoft.com/download#Manuals

Introduction

3 IntroductionAlways keep in mind that the Tach4 sensors are threshold’s sensors. This is important especially for the proximity detection mode, the most commonly used for rotating: working distance could change with the albedo and/or the form and distance of the target, also, contrast appears as an important parameter: teeth-no teeth, black and white marks.

The recommended distance for encoding application is a few millimetres: put the probe closed to the target to avoid an incorrect reading resulting from rocking and wagging of the turning part (Descartes optical law); on the other hand, the reflective tape allows for much more than 100 mm. It is highly recommended that you use the adhesives encoders foroptimal results.

A few phenomena may affect the detection function, such as a drop of liquid on top of the probe, excessive dusts covering the top, more generally, a non transparent environment for our light source such as: diesel engine sump film ( i.e. carbon is not transparent for the near I.R.).Patented concept implemented in the sensors strongly simplifies mounting and set-ups. 152 sensors lights sources are not dangerous: No Laser inside. Prior to measurement, it is recommended that a detection test be performed, even at low speed, to ensure detection feasibility and determine detection distance required for the sensor.

If impossible to perform a test due to technical reason or mounting specifics, a theoretical method would be to fix the probe at a distance equivalent to the width of the black and width strips to detect- in any event, without exceeding 4mm.

IMPORTANT Fixing and support of the probe will influence acquisition of the reading. Please be careful regarding vibration. We recommend that you design your supports including appropriate vibration orders studies. The further the probe will be away from the target, the more the TTL amplitude signal will decrease.

3.1 Scope of DeliveryThe DS-Tacho4 shipment contains the following items: Probe Sensor Tripod Tape Adapter sleeve (6mm)

Illustration 1: Scope of delivery





DS-Tacho4

3.1.1 Sensor 3.1.2 Probe

3.1.3 Tripod 3.1.4 Tape

Tripod: Box-dimensions: 63x50x55 mm





Operation

4 Operation

4.1 Mounting of the Probe

Illustration 2: Mounting of the Probe

L Ensure that you have all items required at your disposal, i.e. the sensor, the probe, and the two hand-pieces for optical fixation

M Put the two hand-pieces down if they are on the optical head of the sensorN Insert the two optical fibres with their respective rivetsO Screw the first hand-piece on and tighten moderately; a little gap between the rivet head and the optical head is

normalP Remove the two fibres in order to allow for mounting of the second hand-pieceQ Make sure that the two fibres and their rivets are assembled correctlyR Hold both probe and sensor simultaneously when inserting the rubber sleeve to avoid damaging the two optical

fibres on the level of the rivets.





DS-Tacho4

4.2 Using the TripodTo mount the probe to the Tripod, you need the 6mm Adapter sleeve.

First put the adapter sleeve over the probe and then mount it in the Tripod.

Illustration 3: Using the Tripod

4.3 Adjustment of the probesOperational mode of the sensor can be seen at the end of the optical fibre by a light beam (not dangerous), which is emitted when the sensor is in “1” mode and not emitted when the sensor is in “0” mode. The sensor keeps its wave length in near Infra -Red to ensure power and immunity of the detection function. This also gives an indication about the condition of the optical fibre.

The sensor should be placed about 2 to 5mm above the tape. A sensitivity potentiometer is available to adjust the trigger level for reliable pulse output.

First turn the potentiometer in mid position. Bring the probe closer to the target until the indicator at the head lights up, targeting the white mark. Shift the probe, and repeat this operation in order to detect the triggering limits on the black marks of the target. Set up the probe in an average position (length), review this operation to confirm the accurate detection: the set up is finished.

Resolution





Operation

4.3.1 Optional Reflector TypesFor optional reflector types please contact [email protected].

4.4 Automatic gap detectionWhen applying the black/white tape to the rotating shaft there will be an irregular rasterisationat the transition point. This can be used as the zero pulse to indicate a defined start position. On the other hand this would result in a rpm drop or spike in our rpm measurement.

A software procedure automatically measures the pulses per revolution and also detects the exact gap length to enable robust and high quality measurement.

IMPORTANT: The zero pulse must be at least 3 pulses long!




mailto:[email protected]


DS-Tacho4

5 Technical

5.1 Sensor set-upPower supply must be perfectly rectified, filtered, and constantly deliver more than 120mA /12V.This is not an “open collector” out put sensor, but PNP output. 152 G7 can support reverse tension, this tension modify signal’s Amplitude. 152 G7 TTL Voltage output is 5Vcc , 152 G7 Voltage output is nominal voltage input -1.5Vcc. If the sensor is connected to the acquisition system the use of dedicated measurement connectors and matching cables is recommended. Please refrain from extending the cable. Otherwise, the sensor’s operation may be affected. To confirm that the sensor is live, check if a faint red LED glows on the small light channel in front of the sensor optical head; You can also use a digital camera to see the I.R. Light. The brightness of this small red light is independent of the position of the potentiometer.

5.2 Sensor plug-inV Rating: 12/24VccV Minima: 10VccV Maxima: 30VccI: 120mA/12Vcc

5.3 SpecificationsSpecifications DS-Tacho4

Supply voltage 9 - 30 VDC

Supply current @ 12 V 100 mA

Max. input frequency 260 kHz

Output TTL

Rise time 100 ns

Fall time <1 μs

Temperature range -10 to 50 °C non condensing

Temperature fiber sensor -40 to 100 °C

Temperature B&W tape -10 to 60 °C

Weight 150 g ( 0.33 lb.)

Working area of probe 2 - 5 mm

Trigger level adjustable Potentiometer 3/4 turn

Probe diameter M6 x 20 mm

Black/white tape 2 mm black, 2 mm white; width 10 mm; 1 m tape included

Connector Lemo FGG.1B.307, directly fits to a Dewesoft counter input

Table 1: DS-Tacho4: Specifications

5.4 Lemo connector

Illustration 4: counter pin-out (Lemo 7 pin)

Connector Type: L1B7fConnector on the measurement module: EGG.1B.307.CLLMating connector: FGG.1B.307.CLAD52





Technical

5.5 Physical Diagram

Illustration 5: Physical Diagram





DS-Tacho4

6 Appendix

6.1 Documentation version historyRevision number: 23Last modified: Mon 02 Dec 2019, 09:56

VersionDate

[dd.mm.yyyy] Notes

1.0.0 09.03.2015 ☑ initial revision

1.0.1 02.12.2019 ☑ Update sensor specification





Documents

DS-Tacho4DS-Tacho4 2 About this document This is the Users Manual for DS-Tacho4 Version 1.0.1. 2.1 Legend The following symbols and formats will be used throughout the document. IMPORTANT