Mounting
5.1 Securing the housing
SCALANCE W788-x / W748-1
20 Operating Instructions, 06/2016, A5E03678333-10
Securing the housing
Grounding connector
Operation of the W7x8 only with connected grounding cable
To operate the SCALANCE W7x8 safely, the housing must make contact with a grounding
cable. Do not use the SCALANCE W7x8 without a grounding cable connected.
The grounding cable is fixed to the housing with a screw. On the rear of the device there is
an M4 threaded hole for this purpose.
Mount the grounding cable before you mount the device
To install the W7x8, you have the following options:
● Wall mounting
● Installing on the S7-300 standard rail
● Installing on a DIN rail
Danger of injury by falling objects
If the SCALANCE W7x8 is subjected to strong vibration (> 10 g), mounting on a 35 mm DIN
rail does not provide adequate support. Under such conditions, the device can come out of
the mounting and may cause injury.
In this case, install the device on an S7-300 standard rail or on a wall.
Strain relief for the cables
Regardless of the type of installation, make sure that there is suitable strain relief for the
connecting cable.
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