Siemens Automation System S7-400 - Manual (Page 80)

Wiring the S7-400
4-20
Automation System S7-400 Hardware and Installation
A5E00850741-01
6. Slacken the screw of the strain relief and insert the cable.
7. Connect the cores according to the illustration on the cover of the power supply
connector. Connect the longer core to PE. Screw on the cores with a torque of
0.6 to 0.8 N/m.
DC AC
L+ L1
N
PE
PE
L--
Terminals
Cable Strain-relief assembly Screw for the strain-
relief assembly
Figure 4-10 Wiring the power supply connector
8. Tighten the screw of the strain relief, so that the cable is secured properly.
9. Close the power supply connector and screw on the cover.
!
Caution
The power supply module or power supply connector can be damaged.
If you plug in or disconnect the connector with voltage applied, the power supply
module or the connector may be damaged.
Only plug in or disconnect the power supply connector with power removed.