Motrona 7186.5260, 7186.5261, 7186.5280, 7186.5281 User guide

Operating Manual

7186.5260 / 7186.5261 and 7186.5280 / 7186.5281

Pulse splitters for incremental encoders - with simple or complete potential separation

Available devices:

7186.5260: Pulse splitter with 8 outputs, short circuit proof encoder supply, potential separation
between input and outputs and a temperature range of -20 to + 60 °C / -4° to 140 °F .

7186.5261: Pulse splitter with 4 outputs, short circuit proof encoder supply, potential separation
between input and outputs and a temperature range of -20 to + 60 °C / -4 ° to 140 °F.

7186.5280: Pulse splitter with 8 outputs, short circuit proof encoder supply, complete potential
separation (input, power supply, outputs) and a temperature range of -20 to + 60 °C / -4° to 140 °F.

7186.5281: Pulse splitter with 4 outputs, short circuit proof encoder supply, complete potential
separation (input, power supply, outputs) and a temperature range of -20 to + 60 °C / -4°F to 140 °F.

Product features:

 Power supply from 10 up to 30 VDC
 1 encoder input for channels A, /A, B, /B, Z, /Z
 Input levels selectable between RS422, TTL and HTL
 Types with 4 or 8 outputs available (see below)
 Selectable output levels (RS422 / TTL / HTL)
 Auxiliary 5.5 VDC encoder supply output
 Easy cascading of further devices possible (incl. select function)

motrona GmbH, Zeppelinstraße 16, DE - 78244 Gottmadingen, Tel. [phone], Fax [phone], [e-mail], www.motrona.com

Version:

Description:

7186.5280_01a/Jan09/af-hk

Original edition

7186.5280_02a/Jan09/af-hk

Supplements for model 7186.5260

7186.5280_02b_oi/Sep-15/ag

“Safety Instructions”, “Technical Specifications” and design updated

Legal notices:

All contents included in this manual are protected by the terms of use and copyrights of motrona GmbH. Any reproduction,
modification, usage or publication in other electronic and printed media as well as in the internet requires prior written
authorization by motrona GmbH.

Table of Contents

1. Safety Instructions and Responsibility 3

1.1 General Safety Instructions 3

1.2 Use according to the intended purpose 3

1.3 Installation 4

1.4 Cleaning, Maintenance and Service Notes 4

2. Introduction and Block Diagram 5

2.1. Block diagram 7186.5260 and 7186.5261 6

2.2. Block diagram 7186.5280 and 7176.5281 7

3. Electrical Connections and LED Function 8

3.1. Power Supply and LEDs 8

3.2. Auxiliary Encoder Supply 8

3.3. Impulse Inputs 9

3.3.1. Encoders with differential output (valid for output levels TTL/ 5 volts and for HTL / 10 - 30
VDC as well) 9

3.3.2. Encoders with single-ended output, without inverted signals (acceptable only with HTL
level 10 - 30 VDC) 9

3.3.3. Differential signals from an encoder simulation (TTL level with remarkable noise) 9

3.3.4. Differential signals for encoder channels A and B, but single-ended marker pulse from
proximity switch or photocell 10

3.4. The Outputs 11

3.5. Cascading of Several Units and Encoder Select Function 11

4. Technical Specifications 13

5. Dimensions 14

7186_5280_02b_oi_e.doc / Feb-21 Page 2 / 14

1. Safety Instructions and Responsibility

1.1 General Safety Instructions

This operation manual is a significant component of the unit and includes important rules and
hints about the installation, function and usage. Non-observance can result in damage and/or
impairment of the functions to the unit or the machine or even in injury to persons using the
equipment!

Please read the following instructions carefully before operating the device and observe all
safety and warning instructions! Keep the manual for later use.

A pertinent qualification of the respective staff is a fundamental requirement in order to use
these manual. The unit must be installed, connected and put into operation by a qualified
electrician.

Liability exclusion: The manufacturer is not liable for personal injury and/or damage to property
and for consequential damage, due to incorrect handling, installation and operation. Further
claims, due to errors in the operation manual as well as misinterpretations are excluded from
liability.

In addition the manufacturer reserve the right to modify the hardware, software or operation
manual at any time and without prior notice. Therefore, there might be minor differences
between the unit and the descriptions in operation manual.

The raiser respectively positioner is exclusively responsible for the safety of the system and
equipment where the unit will be integrated.

During installation or maintenance all general and also all country- and application-specific
safety rules and standards must be observed.

If the device is used in processes, where a failure or faulty operation could damage the system
or injure persons, appropriate precautions to avoid such consequences must be taken.

1.2 Use according to the intended purpose

The unit is intended exclusively for use in industrial machines, constructions and systems. Non­conforming usage does not correspond to the provisions and lies within the sole responsibility
of the user. The manufacturer is not liable for damages which has arisen through unsuitable
and improper use.

Please note that device may only be installed in proper form and used in a technically perfect
condition - in accordance to the Technical Specifications (see chapter 2). The device is not
suitable for operation in explosion-proof areas or areas which are excluded by the EN 61010-1
standard.

7186_5280_02b_oi_e.doc / Feb-21 Page 3 / 14

1.3 Installation

The device is only allowed to be installed and operated within the permissible temperature
range. Please ensure an adequate ventilation and avoid all direct contact between the device
and hot or aggressive gases and liquids.

Before installation or maintenance, the unit must be disconnected from all voltage-sources.
Further it must be ensured that no danger can arise by touching the disconnected voltage­sources.

Devices which are supplied by AC-voltages, must be connected exclusively by switches,
respectively circuit-breakers with the low voltage network. The switch or circuit-breaker must
be placed as near as possible to the device and further indicated as separator.

Incoming as well as outgoing wires and wires for extra low voltages (ELV) must be separated
from dangerous electrical cables (SELV circuits) by using a double resp. increased isolation.

All selected wires and isolations must be conform to the provided voltage- and temperature­ranges. Further all country- and application-specific standards, which are relevant for structure,
form and quality of the wires, must be ensured. Indications about the permissible wire cross­sections for wiring are described in the Technical Specifications (see chapter 2).

Before first start-up it must be ensured that all connections and wires are firmly seated and
secured in the screw terminals. All (inclusively unused) terminals must be fastened by turning
the relevant screws clockwise up to the stop.

Overvoltages at the connections must be limited to values in accordance to the overvoltage
category II.

For placement, wiring, environmental conditions as well as shielding and earthing/grounding of
the supply lines the general standards of industrial automation industry and the specific
shielding instructions of the manufacturer are valid. Please find all respective hints and rules on

www.motrona.com/download.html --> “[General EMC Rules for Wiring, Screening and

Earthing]”.

1.4 Cleaning, Maintenance and Service Notes

To clean the front of the unit please use only a slightly damp (not wet!), soft cloth. For the rear
no cleaning is necessary. For an unscheduled, individual cleaning of the rear the maintenance
staff or assembler is self-responsible.

During normal operation no maintenance is necessary. In case of unexpected problems, failures
or malfunctions the device must be shipped for back to the manufacturer for checking,
adjustment and reparation (if necessary). Unauthorized opening and repairing can have
negative effects or failures to the protection-measures of the unit.

7186_5280_02b_oi_e.doc / Feb-21 Page 4 / 14

2. Introduction and Block Diagram

7186.5260, 7186.5261, 7186.5280 and 7186.5281 represent a series of incremental encoder
splitters with a most compact, space-saving design and with most versatile technical features.
All models are fully identical except for the number of output channels (4 or 8 channels) and the
system of potential separation.

Models 7186.5260 and 7186.5261 are lower in price but provide only a 2-circuit potential
separation between the input on one side and the outputs with power supply on the other side.

Models 7186.5280 and 7186.5281 provide total galvanic separation between inputs, the power
supply and all outputs one against each other. This feature, in general, can be most
advantageous with impulse distribution among expanded production lines with adverse
conditions of
EMC / grounding / potential shift etc.

The encoder input is switch-selectable for operation with either standard RS422 signals, with
differential TTL or HTL signals or with single-ended HTL encoder signals. All encoder outputs
provide fully isolated push-pull drivers with individual assignment of the output level for each
of the output channels.

Separate cascading ports provide easy cascading of multiple units without loss of regular
encoder outputs. Furthermore, cascaded units allow selection and commutation between
different encoder inputs.

The adjoining block diagrams clearly explain the principle of operation and the potential
conditions between all circuits. For simplification the illustrations show only two of the outputs,
since all other outputs are fully identical.

All units of this series provide an extended range of ambient temperatures for use under
difficult environmental conditions (see chapter 2 “Technical Specifications”).

7186_5280_02b_oi_e.doc / Feb-21 Page 5 / 14