Siemens SCALANCE W786-xPRO Operating Instructions Manual page 33

Grounding terminal
To operate the SCALANCE W786 safely, the chassis ground connector must have a
suitable cable connected. Do not use the SCALANCE W786 without a ground cable
connected.
The chassis ground connector is located on the rear of the device (M4 thread). Connect the
ground cable before you mount the SCALANCE W786 on a wall or on the optional mounting
plate. Once the SCALANCE W786 is mounted, the connector is no longer accessible.
Place the supplied toothed washer directly on the rear of the device before screwing on the
ground cable. Only then can you be sure that there is ideal contact with the screwed-on
cable.
Figure 3-4
SCALANCE W786-xPRO
Operating Instructions, Release 08/2007, C79000-G8976-C221-02
WARNING
Chassis ground connector on the rear of the SCALANCE W786
Assembly
3.2 Connecting up cables
33