Wiring the S7-400
4-28
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
4.16 Wiring the Power Supply Module
Power Supply Connector
You use the power supply connector to connect a power supply module to your
supply. When delivered, the power supply connector is plugged into the power
supply module. There are two versions (AC and DC) of power supply connector.
The two versions are coded, meaning an AC connector can only be plugged into
an AC power supply module, and a DC connector can only be plugged into a DC
power supply module.
Disconnecting the Power Supply Connector
Before wiring, you must unplug the power supply connector from the power supply
module.
1. Open the cover of the power supply module.
2. Detach the connector by levering it off with a suitable tool, for example, a
screwdriver, at the opening provided (1).
3. Pull the connector forward and out of the power supply module (2).
(1)
(2)
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