Siemens S7-400 installation manual Wiring the Front Connector, Spring-Type Terminals

Wiring the S7-400

4.16Wiring the Front Connector, Spring-Type Terminals

Procedure

To wire the prepared front connector, follow the steps outlined below:

1.Are you using wire end ferrules?

If so: Strip the conductors over 10 mm. Press-fit the wire end ferrules onto the conductors.

If not: Strip the conductors over 8 to 10 mm.

2.Use a screwdriver (0.5 x 3.5 mm DIN 5264) to release the spring contact of the first terminal. Start at the bottom of the front connector.

You can release the individual spring contacts at three points: from the front, from the side or from the back (see Figure 4-15 ).

3.Push the first wire into the released spring contact and withdraw the screwdriver.

4.Repeat steps 3 and 4 for all other wires.

Releasing

a spring contact

from the back

Releasing

a spring contact

from the front

Releasing

a spring contact

from the side

Figure 4-15 Wiring a Front Connector with Spring-Type Terminals

4-26	Automation System S7-400	Hardware and Installation
		A5E00850741-01