Pin assignment
Figure 9: Terminals on front connector
Table 3: Pin assignment of the terminals
Terminal
Description
13, 14
1)
2)
Enabling current path
23, 24
1)
2)
Enabling current path
31
Feedback current path, 24 V DC
32
Feedback current path, for connection to the EDM input of
the basic device
I1
CH1 input (safety capable input for OSSD 1)
I2
CH2 input (safety capable input for OSSD 2)
3)
A2
Voltage supply 0 V DC
1)
The enabling current paths must be supplied by the same voltage supply.
2)
The enabling current path and external device monitoring (EDM) must be wired within the control cabinet.
3)
With single-channel base device: Connect jumper between I1 and I2.
Complementary information
To protect and increase the service life of contact outputs, equip all connected loads
with varistors or RC elements. The response times will increase depending on the sup‐
pressor used.
Further topics
•
"Connection diagrams", page 13
6
ELECTRICAL INSTALLATION
18
O P E R A T I N G I N S T R U C T I O N S | ReLy OSSD1
8020860/ZX84/2018-11-15 | SICK
Subject to change without notice
