SICK ReLy OSSD1

≥ 50≥ 50
≥ 25
Figure 3: Distances in control cabinet
R
equired distance:
•
Above and below the module: ≥50mm
•
In front of the module: ≥25mm
4.4 Electrical integration
Important information
NOTE
T
he device achieves overvoltage category III if feedback current path 31/32 is supplied
by the same voltage supply as the upstream OSSDs (safety extra-low voltage). Con‐
nected devices must be also have overvoltage category III.
4.4.1 Voltage supply
Prerequisites
•
T
he power supply unit is able to jumper a brief power failure of 20ms as specified
in IEC60204-1.
•
The voltage supply and connected signals meet the requirements for SELV/PELV
(EN61140) or NECClass2 (UL1310).
•
The electrical voltage supply has a suitable electrical fuse.
Further topics
•
"D
ata sheet", page 24
4 P
ROJECT PLANNING
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O P E R A T I N G I N S T R U C T I O N S | ReLy OSSD1 8020860/1FH0/2022-10-27 | SICK
Subject to change without notice