Power Supply; Application - Siemens NCU 7x0.3 PN Series Manual

7.4

Power supply

7.4.1

Application

This interface is provided exclusively for connection of the external power supply.
Note
When using external power supplies (e.g. SITOP), the ground potential must be connected
with the protective ground terminal (PELV).
Pin assignment
Table 7- 2
Pin
+
+
M
M
Signal type: VI = voltage input;VO = voltage output
Note
The two "+" or "M" terminals are jumpered in the connector. This ensures the 24 V voltage is
looped through.
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
Power supply X124
Signal name Signal type
P24 VI
P24 VI
M VO
M VO
Meaning
Power supply 24 V
Ground
Connecting
7.4 Power supply
45