Assembly And Connectors - Siemens SCALANCE W788-1PRO Operating Instructions Manual

3.2

Assembly and Connectors

Securing the Housing
There are two ways of securing the housing:
● Us e the holes in the housing to screw the device to the wall or on a horizontal
surface.
● Install the SCALANCE W78x on a 90 mm long, vertically mounted piece of
standard rail (S7-300). In this ca
between the wall and SCALANCE W78x. If you want to in
W78x along with a PS791-1PRO, a 150 mm long standard rail is necessary.
● Make sure that there is suitable strain relief for the conne
No e t
We recomme
sh ade. This avoids unwanted heating of the device and prevents premature ageing
of the device and ca
that it is installed so that it is protected from UV and that the device is not
to ain (installed under a roof). r
Note
The minimum distance to fluorescent lamps should be 0.5 m. For cabinet
installation, we recommend that you do not install relays on the same or on directly
neighboring mounting rails.
Connectors for the Power Supply and for Ethernet
The SCALANCE W78x is attached to Ethernet via a hybrid socket on the front of
the housing (position A in Figure 3.1). This port also has contacts for the operating
voltage.
Note
If you do not use the hybrid socket, this must be covered with a protective cap,
otherwise IP 65 protection is lost. A suitable protective cap is available as an
accessory (order no. 6ES7194-1JB10-0XA0). If you do not use the M12 connector,
the supplied protective cap must also be fitted to retain the IP65 degree of
protection.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
nd that you protect the device from direct sunlight with a suitable
bling. When operating the SCALANCE W outdoors, make sure
Description of the SCALANCE W78x
se, the standard rail serves as an adapter
stall the SCALANCE
cting cable.
exposed
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