VAR8 and Variants - Product Description
Issue: 02 complete, approved
Page 46 of 54
8.7 Fault Relay, Audio Monitoring Bus, and Auxiliary Supply
Fault Relay
• 2x3 way double stack terminal block (5 mm).
• Lower terminal block.
L The relay NO contact closes to COM to indicate health.
L 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.
COM
NO
NC
VAR8
V+
A+
A-
Fault Relay
Signal Description
NO Volt free contact – Normally Open
COM Relay Common
NC Volt free contact – Normally Closed
Audio Monitoring and Auxiliary Supply
Signal Description
V+ Auxiliary supply: 18 V to 36 V fused at 200 mA
A−
Audio Monitor Bus. –10 dBu nom
A+ As above
8.8 DC Power Input
• 4 way terminal block (5 mm).
• Two alternate 24 V DC power inputs.
VAR8
V+
V+
GND
GND
INPUT 1
INPUT 2
Signal Description
V+ +V supply (18 V to 40 V DC fused at 2.5 A)
GND 0 V supply
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