11
N93-561-85 Issue 0
© Copyright Protec Fire Detection plc 2009
7.0 Commissioning
7.1
Connecting the Loop
The Digilite loop wiring must always be connected as a complete loop from the panel to each
outstation, then back to the panel again. Please see figure 7.0
The loop wiring carries both power and bi-directional signalling to the Digilite outstations.
Figure 7.0
Loop Connection Details
7.2
Connecting the Mains
Important Note:
Pay particular attention that the earth cable is firmly connected to the earth terminal of the
power supply, and that the earth strap from the power supply PCB to the earth post is sound.
Ensure the fused double pole isolator is in the ‘OFF’ position then connect the incoming mains cable
to the appropriate terminals on the power supply PCB (see figure 7.1).
Figure 7.1
Power Supply Terminal Details
Outgoing loop connections
Return loop connections