Mounting
4.3 Power supply
Compact Switch Module CSM 1277
22 Operating Instructions, V. 1.20, A2B00079397B
4.3 Power supply
Power supply
The power supply is connected using a 3-pin plug-in terminal block. The functional ground
can be connected to the grounded DIN rail. It does not need to be connected for problem-
free operation. The power supply is non-floating.
Figure 4-4 Connecting the power supply
Figure 4-5 Pin assignment of the terminal block
Table 4- 1 Pin assignment for the power supply
Pin number Assignment
Pin 1 L+ (24 V DC)
Pin 2 M (chassis ground)
Pin 3 Functional ground
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