Product Description; Function Description - SICK TR4 Direct Cylindrical Betriebsanleitung

Operating Instructions
TR4
3

Product description

8014465/YTD7/2016-03-29
Subject to change without notice
Product description
This chapter provides information on the special features and proper-
ties of the TR4 safety switch. It describes the construction and the
operating principle of the device.
= Please read this chapter before mounting, installing and commission-
ing the device.
3.1

Function description

The electrosensitively operating TR4 safety switch comprises two com-
ponents:
• a sensor
• a coded actuator (transponder)
The sensor is fitted to the fixed part of the guard, the actuator to the
moving part.
If the guard is closed, the actuator is moved towards the sensor. On
reaching the switch-on distance, the actuator's code is read by the
sensor and evaluated. If there is a valid actuator in the response range
of the sensor, the two safety outputs OSSD OUT A and OSSD OUT B
(semiconductor outputs) are closed and the application diagnostic
output OUT Aux is opened.
If the guard is opened and the actuator is removed from the response
range of the sensor, then the sensor switches its safety outputs off and
the application diagnostic output on.
There are two different systems:
• TR4 Multicoded
• TR4 Unique Coded (products are marked with "CODED")
Both the sensors and the actuators in the two systems are different
and can only be operated with the matching mating element.
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
en
Chapter 3
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