Example: Isolated connection of OSSD1 and OSSD2
Figure 19: Dual-channel and isolated connection of OSSD1 and OSSD2
Avoiding any potential difference between load and protective device
If you 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 20: No potential difference between load and protective device
Further topics
•
"Integrating into the electrical control", page 20
6.2
System connection (flying leads, 5-wire)
Table 5: System connection pin assignment (flying leads, 5-wire)
Wire color
Sender
Receiver
Brown
+24 V DC (voltage supply
input)
+24 V DC (voltage supply input)
White
Reserved
OSSD1 (switching output 1)
Blue
0 V DC (voltage supply input)
0 V DC (voltage supply input)
Black
Reserved
OSSD2 (switching output 2)
Gray
Not assigned
Not assigned
6
ELECTRICAL INSTALLATION
34
O P E R A T I N G I N S T R U C T I O N S | deTem2 Core IP69K
8021554/14Q7/2020-04-27 | SICK
Subject to change without notice