Fault Relay, Audio Monitoring Bus, And Auxiliary Supply; Dc Power Input - ASL INTERCOM VAR8-ACU Product Description

8.7

Fault Relay, Audio Monitoring Bus, and Auxiliary Supply

Fault Relay
•
2x3 way double stack terminal block (5 mm).
•
Lower terminal block.
The relay NO contact closes to COM to indicate health.
The relay NC contact closes to COM to indicate faults, or power
off.
Audio Monitoring
•
Upper terminal block.
•
Audio monitoring bus to be connected to external amplifiers.
Auxiliary Supply
•
Upper terminal block.
Signal
NO
COM
NC
Signal
V+
A−
A+
8.8

DC Power Input

•
4 way terminal block (5 mm).
•
Two alternate 24 V DC power inputs.
Signal
V+
GND
VAR8-ACU and Variants - Product Description
Fault Relay
Volt free contact – Normally Open
Relay Common
Volt free contact – Normally Closed
Audio Monitoring and Auxiliary Supply
Auxiliary supply: 18 V to 36 V fused at 200 mA
Audio Monitor Bus. –10 dBu nom
As above
+V supply (18 V to 40 V DC fused at 2.5 A)
0 V supply
Issue: 02 complete, approved
Page 36 of 44
VAR8
Description
Description
VAR8
Description