Fault Relay - ASL INTERCOM VAR8 Product Description

5.3

Fault Relay

The unit features a fault relay, for indicating system
health to external equipment. The relay is normally
energised to indicate system health, and de-
energised in the event of system fault. If power is
removed then a fault is indicated.
VAR8 and Variants - Product Description
Issue: 02 complete, approved
Page 36 of 54
Figure 12 Fault Relay Wiring
NC NO
FAULT RELAY
COM
(SHOWN DE-ENERGISED)
RELAY NC
CLOSED WHEN FAULTY
(RELAY DE-ENERGISED)
RELAY NO
CLOSED WHEN HEALTHY
(RELAY ENERGISED)
RELAY COM