Prerequisites
•
T
he safety light curtain has been safely integrated into the control system and the
electrical system of the machine.
•
Mounting has been correctly executed.
Example: Isolated connection of OSSD1 and OSSD2
Figure 35: Dual-channel and isolated connection of OSSD1 and OSSD2
Avoiding any potential difference between load and protective device
If y
ou connect loads to the output signal switching devices (switching outputs) that then
also switch if controlled with negative voltage (e.g., electro-mechanical contactor with‐
out reverse polarity protection diode), you must connect the 0 V connections of these
loads and those of the corresponding protective device separately and also directly to
the same 0 V terminal strip. In the event of a fault, this is the only way to ensure that
there can be no potential difference between the 0 V connections of the loads and
those of the corresponding protective device.
Figure 36: No potential difference between load and protective device
Further topics
•
"Int
egration in electrical control", page 22
6.2 System connection (flying leads, 5-wire)
Table 4: System connection pin assignment (flying leads, 5-wire)
Wire color Sender Receiver
Brown +24 V DC (voltage supply
in
put)
+24 V DC (voltage supply input)
ELECTRICAL INSTALLATION 6
8017023/14Q6/2020-04-27 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Ex
45
Subject to change without notice