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15 wiring the front connector, screw terminals – Siemens Automation System S7-400 User Manual

Page 85

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Wiring the S7-400

4-25

Automation System S7-400 Hardware and Installation

A5E00850741-01

4.15

Wiring the Front Connector, Screw Terminals

Procedure

To wire the prepared front connector:

1. Are you using wire ferrules?

If yes: Strip the conductors at a length of 10 mm. Press-fit the wire end ferrules

onto the conductors.
If not: Strip the conductors at a length of 8 to 10 mm.

2. Terminate the wires, starting at the bottom of the front connector.
3. Screw the ends of the conductors onto the front connector (tightening torque =

0.6 to 0.8 N/m. Also tighten the unwired terminals.

0.6 ... 0.8 Nm

Figure 4-14 Wiring a Front Connector with Screw-Type Terminals