Siemens S7-400 Principle of the spring loaded terminal, Principle of the spring contact

Wiring the S7-400

Principle of the spring loaded terminal

The following figure shows the principle of spring contacts. Releasing and engaging from the front is illustrated.

1. Insert the screwdriver

2. Insert the wire into the spring contact as far as it will go

3. Withdraw the screwdriver: the wire is trapped by the contact

Figure 4-16 Principle of the spring contact

Automation System S7-400	Hardware and Installation	4-27
A5E00850741-01