Installing Cables - Siemens SIMATIC NET SCALANCE W786 Series Operating Instructions Manual

Installation and removal

5.3 Installing cables

5.3 Installing cables
Connecting up cables prior to mounting
Before you screw a SCALANCE W786 to a wall or to the optional mounting plate, the cables for
the power supply, for Ethernet, and, when necessary, for the external antennas must be
connected up first. The available options are as follows:
Figure 5-2
• The cables are inserted from above (position A in the previous schematic). The housing of the
SCALANCE W786 has an opening at the top for this purpose.
• The cables are inserted from below (position B in the previous schematic). There is also an
opening at the bottom for this purpose.
• Cables inserted through a wall behind the SCALANCE W786 (position C in the previous
schematic). In this case, you will need to mount the SCALANCE W786 so that the opening in
the wall is located above the lower edge of the device.
Grounding terminal
Do not use the device without grounding
To operate the device safely, the grounding connector must have a suitable cable connected.
Do not use the device without a grounding cable connected.
The ground connector is located on the rear of the device (M4 thread, max. screw length 20
mm). Connect the grounding cable before you mount the device on a wall or on the optional
mounting plate. Once the device is mounted, this 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.
34
A B
Side view of a SCALANCE W786 with cables entering from different directions
WARNING
C
Operating Instructions, 12/2021, A5E03678337-14
SCALANCE W786-x