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6
Electrical installation
6.1
Safety
DANGER
Hazard due to electrical voltage
Hazard due to unexpected starting of the machine
b
Make sure that the machine is and remains disconnected from the power supply
during electrical installation.
b
Make sure that the dangerous state of the machine is and remains switched off
during electrical installation.
b
Make sure that the outputs of the safety locking device have no effect on the
machine during electrical installation.
DANGER
Incorrect connection of the safety locking device
Loss of safety function
b
In the case of insulating material/connection strands, observe the necessary tem‐
perature resistance and mechanical load capability.
b
Only use safe contacts for safety functions.
6.2
Notes on cULus
For use according to the requirements of UL 508, the following conditions must also be
met:
•
A power supply marked as “for use in class 2 circuits” must be used.
•
Alternative solutions must correspond to the following requirements: Electrically
isolated power supply unit with fuse protection in accordance with UL248. This
fuse should be rated for max. 3.3 A and be integrated in the 30 V DC voltage sec‐
tion.
•
A connecting cable must be used that is listed under UL Category Code CYJV / 7,
min. 24 AWG, min. 80 °C.
6.3
Device connection
Prerequisites
•
All electrical connections must be isolated from the supply network either through
safety transformers in accordance with IEC 61558‑2‑6 with output voltage limita‐
tion or through equivalent isolation measures (PELV).
•
Power devices that represent a strong source of interference must be locally iso‐
lated from the input and output circuits for signal processing. The cable routing of
the safety circuits should be separated from the cables of the power circuits by the
greatest possible distance.
•
In order to avoid EMC disturbances, the physical ambient and operating conditions
at the installation location of the device must comply with the requirements of
IEC 60204-1.
ELECTRICAL INSTALLATION
6
8023119/15LY/2019-10-28 | SICK
O P E R A T I N G I N S T R U C T I O N S | TR110 Lock
29
Subject to change without notice