Wiring the S7-400
4-18 AutomationSystem S7-400 Hardwareand Installation
A5E00850741-01
4.12 Wiring the Power Supply Module

Power Supply Connector

Youuse 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. Openthe cover of the power supply module.
2. Detachthe connector by levering it off with a suitable tool, for example, a
screwdriver,at the opening provided (1).
3. Pullthe connector forward and out of the power supply module (2).
(1)
(2)
Figure 4-9 Disconnecting power supply connector