Connection - SICK TR4 Mode D'emploi

Operating Instructions
TR4
WARNING
Notes
8014465/YIJ2/2015-03-02
Subject to change without notice
Electrical installation
5.3

Connection

Switch the power supply off!
The machine/system could unintentionally start up while you are
connecting the devices.
Ensure that the entire machine/system is disconnected during the
electrical installation.
Only use a suitable voltage supply!
The sensor must be connected to a voltage supply of protection class 2
SELV 24 V DC, +10 %/–15 %.
Prevent the formation of a potential difference between the load and
the protective device!
If you connect loads to the OSSDs that are not reverse polarity pro-
tected, then you must connect the 0 V connections for these loads
and the related protective device separately, one after the other, to
the same 0 V terminal strip. Only then is it ensured that in the case of
a fault, it is not possible for a potential difference to form between
the 0 V connections for the loads and the related protective device.
The TR4 safety switch meets the interference suppression require-
ments (EMC) for industrial use (interference suppression class A).
When used in residential areas it can cause interference.
To minimize line effects on the behavior of the device, the external
voltage supply for the devices (SELV) must, among other aspects, be
able to bridge a power failure lasting 20 ms. Power supplies accord-
ing to EN 60 204K1 satisfy this requirement. Suitable power supplies
are available as accessories from SICK.
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
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Chapter 5
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