Dewesoft Ds-tacho-2 Product manual

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DS-TACHO-2

TECHNICAL REFERENCE MANUAL

DS-TACHO-2 V20-1

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1

DS-TACHO-2
TECHNICAL REFERENCE MANUAL
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Table of contents
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Table of contents 2
About this document 3
1. Legend 3
Introduction 4
Specifications 5
Operating instructions 6
Set up in DEWESoft 7
Measurement 8
Warranty information 9
1. Calibration 9
2. Support 9
3. Service/repair 9
4. Restricted Rights 9
5. Printing History 10
6. Copyright 10
7. Trademarks 10
Safety instructions 11
1. Safety symbols in the manual 11
2. General Safety Instructions 11
2.1. Environmental Considerations 11
2.2. Product End-of-Life Handling 11
2.3. System and Components Recycling 11
2.4.  General safety and hazard warnings for all Dewesoft systems 12
Documentation version history 15
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DS-TACHO-2 V20-1 2/15 

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2. About this document



2.1. Legend



The following symbols and formats will be used throughout the document.



Important

It gives you important information about the subject.

Please read carefully!



Hint

It gives you a hint or provides additional information about a subject.



Example

Gives you an example of a specific subject.



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TECHNICAL REFERENCE MANUAL

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3. Introduction

DS TACHO 2 is a remote optical LED sensor. It has a visible red LED light source and green LED on-target

indicator. The red LED light source acts as the aiming device during setup and can accurately measure

speeds from 1 up to 250000 RPM from a distance of up to 1 meter with a maximum offset angle of 45

degrees from the rotating object. The sensor is housed in a threaded stainless-steel tube and supplied

with a 90-degree mounting bracket and a 2.5 meter shielded cable.



Common usage of the sensor is in a wide range of general purpose applications in relatively clean

environments.

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4. Specifications



Speed range

1 – 250 000 RPM

Distance to object

Up to 1 meter and 45 degrees offset from target

Power supply

3-15VDC, 45mA

Operating temperature

3-15VDC, 45mA

Connector

L1B7m connector for SIRIUS and DEWE-43 counter input

Output signal

Negative pulse input voltage (+V) to 0

Dimensions

74 mm length, 16mm diameter

Cable length

2.5 meters

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5. Operating instructions



The remote optical sensor is capable of detecting a reflected pulse from a target consisting of reflective

tape at distances of up to 1 meter from the rotating object and angles up to 45 degrees.



For most applications, a 12-mm square piece of reflective tape should be applied to a clean area on the

rotating object. The sensor should be optically aligned to illuminate the on-target indicator once per

revolution. The sensor must be mounted steady to obtain accurate measurement. The optical sensor

must be placed at a slight angle (15 degrees recommended) from perpendicular, so that the sensor will

receive only pulses from the reflective marker.



The optical sensor must be at least 25 mm from the reflective target to avoid false triggering. The green

LED on-target indicator will blink at the input frequency rate when the sensor is properly aimed.



NOTE : The green LED On-Target Indicator will blink on and off at slow speeds and

remain on steady at high speeds.

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6. Set up in DEWESoft



Connect the sensor to the counter input (ACC+, STG+, Multi, …) and enter the counter setup.



Under the Basic application select Sensor (encoder, CDM, tacho…) mode. From the dropdown menu

select the Tacho (Digital) as a sensor type. It depends on the connection of the sensor which signal is

selected as Signal input (CNT_IN1 or CNT_IN0). After selecting all the mentioned parameters, you can

immediately see the angle and the frequency of rotation.

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TECHNICAL REFERENCE MANUAL

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7. Measurement



Once the sensor is properly connected and defined in DEWESoft, it can be used for frequency

measurements (for example: order tracking, balancing, basic RPM measurements, …).

Example: in the order tracking setup you can directly select the tacho as a frequency channel.



The lowest detectable frequency for the counter input on the DEWE-43 / SIRIUS is 5 Hz, therefore if you

have 1 pulse/revolution, the lowest RPM is 300.

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TECHNICAL REFERENCE MANUAL

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8. Warranty information



Notice

The information contained in this document is subject to change without notice.



Note:

Dewesoft d.o.o. 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.



The 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

https://dewesoft.com/support/distributors.



8.1. Calibration

Every instrument needs to be calibrated at regular intervals. The standard norm across nearly every

industry is annual calibration. Before your Dewesoft data acquisition system is delivered, it is calibrated.

Detailed calibration reports for your Dewesoft system can be requested. We retain them for at least one

year, after system delivery.



8.2. 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.



Dewesoft d.o.o.

Gabrsko 11a

1420 Trbovlje Slovenia



Europe Tel.: +386 356 25 300

Web: http://www.dewesoft.com

The telephone hotline is available Monday to Friday from 07:00 to 16:00 CET (GMT +1:00)



8.3. Service/repair

The team of Dewesoft also performs any kinds of repairs to your system to assure a safe and proper

operation in the future. For information regarding service and repairs please contact your local

distributor first or Dewesoft directly on https://dewesoft.com/support/rma-service.



8.4. Restricted Rights

Use Slovenian law for duplication or disclosure. Dewesoft d.o.o. Gabrsko 11a, 1420 Trbovlje, Slovenia /

Europe.

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8.5. Printing History

Version 2.0.0, Revision 217 Released 2015 Last changed: 23. July 2018 at 16:54.



8.6. Copyright

permission is prohibited, except as allowed under the copyright laws. All trademarks and registered

trademarks are acknowledged to be the property of their owners.



8.7. Trademarks

We take pride in our products and we take care that all key products and technologies are registered as

trademarks all over the world. The Dewesoft name is a registered trademark. Product families

(KRYPTON, SIRIUS, DSI, DS-NET) and technologies (DualCoreADC, SuperCounter, GrandView) are

registered trademarks as well. When used as the logo or as part of any graphic material, the registered

trademark sign is used as a part of the logo. When used in text representing the company, product or

technology name, the ® sign is not used. The Dewesoft triangle logo is a registered trademark but the ®

sign is not used in the visual representation of the triangle logo.

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9. Safety instructions

Your safety is our primary concern! Please be safe!



9.1. Safety symbols in the manual



Warning

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



Caution

Calls attention to a procedure, practice, or condition that could possibly cause damage to

equipment or permanent loss of data.



9.2. General Safety Instructions



Warning



The following general safety precautions must be observed during all phases of operation, service, and

repair of this product. Failure to comply with these precautions or with specific warnings elsewhere in

this manual violates safety standards of design, manufacture, and intended use of the product.

Dewesoft GmbH assumes no liability for the customer’s failure to comply with these requirements.



All accessories shown in this document are available as an option and will not be shipped as standard

parts.

9.2.1. Environmental Considerations

Information about the environmental impact of the product.

9.2.2. Product End-of-Life Handling

Observe the following guidelines when recycling a Dewesoft system:

9.2.3. System and Components Recycling

Production of these components required the extraction and use of natural resources. The substances

contained in the system could be harmful to your health and to the environment if the system is

improperly handled at its end of life! Please recycle this product in an appropriate way to avoid

unnecessary pollution of the environment and to keep natural resources.



This symbol indicates that this system complies with the European Union’s requirements

according to Directive 2002/96/EC on waste electrical and electronic equipment (WEEE).

Please find further information about recycling on the Dewesoft web site

www.dewesoft.com



Restriction of Hazardous Substances

DS-TACHO-2 V20-1 11/15 

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TECHNICAL REFERENCE MANUAL

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This product has been classified as Monitoring and Control equipment and is outside the scope of the

2002/95/EC RoHS Directive. However, we take care of our environment and the product is lead-free.

9.2.4. General safety and hazard warnings for all Dewesoft systems

Safety of the operator and the unit depend on following these rules.

●Use this system under the terms of the specifications only to avoid any possible danger.

●Read your manual before operating the system.

●Observe local laws when using the instrument.

●DO NOT touch internal wiring!

●DO NOT use higher supply voltage than specified!

●Use only original plugs and cables for harnessing.

●You may not connect higher voltages than rated to any connectors.

●The power cable and connector serve as Power-Breaker. The cable must not exceed 3 meters,

the disconnect function must be possible without tools.

●Maintenance must be executed by qualified staff only.

●During the use of the system, it might be possible to access other parts of a more comprehensive

system. Please read and follow the safety instructions provided in the manuals of all other

components regarding warning and security advice for using the system.

●With this product, only use the power cable delivered or defined for the host country.

●DO NOT connect or disconnect sensors, probes or test leads, as these parts are connected to a

voltage supply unit.

●Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth

terminal), a non-interruptible safety earth ground must be provided from the mains power

source to the product input wiring terminals.

●Please note the characteristics and indicators on the system to avoid fire or electric shocks.

Before connecting the system, please read the corresponding specifications in the product

manual carefully.

●The inputs must not, unless otherwise noted (CATx identification), be connected to the main

circuit of category II, III and IV.

●The power cord separates the system from the power supply. Do not block the power cord, since

it has to be accessible for the users.

●DO NOT use the system if equipment covers or shields are removed.

●If you assume the system is damaged, get it examined by authorized personnel only.

●Adverse environmental conditions are Moisture or high humidity Dust, flammable gases, fumes

or dissolver Thunderstorm or thunderstorm conditions (except assembly PNA) Electrostatic

fields, etc.

●The measurement category can be adjusted depending on module configuration.

●Any other use than described above may damage your system and is attended with dangers like

short-circuiting, fire or electric shocks.

●The whole system must not be changed, rebuilt or opened.

●DO NOT operate damaged equipment: Whenever it is possible that the safety protection

features built into this product have been impaired, either through physical damage, excessive

moisture, or any other reason, REMOVE POWER and do not use the product until the safe

operation can be verified by service-trained personnel. If necessary, return the product to

Dewesoft sales and service office for service and repair to ensure that safety features are

maintained.

●If you assume a more riskless use is not provided anymore, the system has to be rendered

inoperative and should be protected against inadvertent operation. It is assumed that a more

DS-TACHO-2 V20-1 12/15 

DS-TACHO-2

TECHNICAL REFERENCE MANUAL

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riskless operation is not possible anymore if the system is damaged obviously or causes strange

noises. the system does not work anymore. The system has been exposed to long storage in

adverse environments. the system has been exposed to heavy shipment strain.

●Warranty void if damages caused by disregarding this manual. For consequential damages, NO

liability will be assumed!

●Warranty void if damage to property or persons caused by improper use or disregarding the

safety instructions.

●Unauthorized changing or rebuilding the system is prohibited due to safety and permission

reasons (CE).

●Be careful with voltages >25 VAC or >35 VDC! These voltages are already high enough in order to

get a perilous electric shock by touching the wiring.

●The product heats during operation. Make sure there is adequate ventilation. Ventilation slots

must not be covered!

●Only fuses of the specified type and nominal current may be used. The use of patched fuses is

prohibited.

●Prevent using metal bare wires! Risk of short circuit and fire hazard!

●DO NOT use the system before, during or shortly after a thunderstorm (risk of lightning and high

energy over-voltage). An advanced range of application under certain conditions is allowed with

therefore designed products only. For details please refer to the specifications.

●Make sure that your hands, shoes, clothes, the floor, the system or measuring leads, integrated

circuits and so on, are dry.

●DO NOT use the system in rooms with flammable gases, fumes or dust or in adverse

environmental conditions.

●Avoid operation in the immediate vicinity of high magnetic or electromagnetic fields,

transmitting antennas or high-frequency generators, for exact values please refer to enclosed

specifications.

●Use measurement leads or measurement accessories aligned with the specification of the

system only. Fire hazard in case of overload!

●Do not switch on the system after transporting it from a cold into a warm room and vice versa.

The thereby created condensation may damage your system. Acclimatise the system unpowered

to room temperature.

●Do not disassemble the system! There is a high risk of getting a perilous electric shock.

Capacitors still might be charged, even if the system has been removed from the power supply.

●The electrical installations and equipment in industrial facilities must be observed by the security

regulations and insurance institutions.

●The use of the measuring system in schools and other training facilities must be observed by

skilled personnel.

●The measuring systems are not designed for use in humans and animals.

●Please contact a professional if you have doubts about the method of operation, safety or the

connection of the system.

●Please be careful with the product. Shocks, hits and dropping it from already- lower level may

damage your system.

●Please also consider the detailed technical reference manual as well as the security advice of the

connected systems.

●This product has left the factory in safety-related flawlessness and in proper condition. In order to

maintain this condition and guarantee safety use, the user has to consider the security advice

and warnings in this manual.



EN 61326-3-1:2008

DS-TACHO-2 V20-1 13/15 

DS-TACHO-2

TECHNICAL REFERENCE MANUAL

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IEC 61326-1 applies to this part of IEC 61326 but is limited to systems and equipment for industrial

applications intended to perform safety functions as defined in IEC 61508 with SIL 1-3.



The electromagnetic environments encompassed by this product family standard are industrial, both

indoor and outdoor, as described for industrial locations in IEC 61000-6-2 or defined in 3.7 of IEC 61326-1.



Equipment and systems intended for use in other electromagnetic environments, for example, in the

process industry or in environments with potentially explosive atmospheres, are excluded from the

scope of this product family standard, IEC 61326-3-1.



Devices and systems according to IEC 61508 or IEC 61511 which are considered as “operationally

well-tried”, are excluded from the scope of IEC 61326-3-1.



Fire-alarm and safety-alarm systems, intended for the protection of buildings, are excluded from the

scope of IEC 61326-3-1.

 

DS-TACHO-2 V20-1 14/15 

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10. Documentation version history

Revision

Author

Date

Comment

1.0

DEWESoft d.o.o.

12/01/2018

Initial version



DS-TACHO-2 V20-1 15/15 

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