Shielded Cable Routing; Auxiliary Power Supply Connections - GE Alliance AL-2017 Installation Manual

Shielded cable routing

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 bus cable is routed via more than one plastic device, the shielding from incoming and out-going cable has to be connected.
Note: Metal chassis must be earth grounded. Splice shield drain wire at all juntions.
Figure 5. Shielded cable routing
D-D+OV
DGP

Auxiliary power supply connections

In systems in which expansion module power is not supplied by the main control panel or an AC-powered DGP with auxiliary outputs, a
UL Listed power supply suitable for burglar alarm applications, such as the Altronix AL300ULX, must be utilized.
Note: Tie all 0V together. Do not connect the +12V together.
Figure 6. Auxiliary power supply connections
D-D+OV
DGP
6
System bus
D-D+0V+12
RAS
Altronix AL300ULX
auxiliary power supply
-
+
D-D+0V+12
RAS
Cable shield drain wire
D-D+0V+12
Control panel
D-D+0V+12
Control panel
AL-2017/AL-3017 Installation Manual
Shield drain
wire ground