Connection; Safety When Connecting Up - Siemens SIMATIC NET SCALANCE W774-1 Operating Instructions Manual

Connection

6.1

Safety when connecting up

Safety notices
When connecting up the device, keep to the safety notices listed below.
Note
Strain relief for the Ethernet cables
In order to avoid mechanical stress on the Ethernet cables and resulting interruption of
the contact, fasten the cables at a short distance from the connector using a cable guide
or busbar.
Note
Close unused sockets
Close all unused M12 sockets with protective caps (tightening torque at least 0.4 Nm) to
achieve the specified type of protection.
Lightning protection
Danger due to lightning strikes
Antennas installed outdoors must be within the area covered by a lightning protection
system. Make sure that all conducting systems entering from outdoors can be
protected by a lightning protection potential equalization system.
When implementing your lightning protection concept, make sure you adhere to the
VDE 0182 or IEC 62305 standard.
Suitable lightning protectors are available in the accessories (Page 26) of SIMATIC NET
Industrial WLAN.
Note
We recommend that you use the maintenance-free lightning protector LP798-2N.
Exception: When there is also DC power supplied via the antenna cable. In this case,
only the lightning protector LP798-1N can be used.
SCALANCE W774-1 / W734-1
Operating Instructions, 03/2022, C79000-G8976-C325-15
WARNING
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