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Grounding
All devices designed for the system have earth connections via metal studs to
the metal housing. Make sure that these metal studs make good connection to
the housing (beware of paint). The earth connections of every piece of equipment
in the system can be used for connecting the screen of shielded cables. If a
device is placed in a plastic housing the earth lug of the device does not have to
be connected.
In one building several cabinets or devices are earthed to a safety ground. The
safety ground for the building must be checked by a licensed contractor.
Shielding
The shielding of all shielded cables used in the system should only be connected
at one side to one common earthing point in a building. If a shielded LAN cable is
routed via more than one plastic device the shielding from incoming and outgoing
cable must be connected.
Termination Links
Put a jumper across TERM on the panel and the furthest device to ensure
correct RS-485 termination and avoid communication issues with signal
reflection, etc.
12
xGen Installation & Programming Guide
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