Biamp AudiaFUSION - Manual (Page 9)

8
AudiaFUSION REAR PANEl
Amplifier-to-Amplifier Failover
AudiaFUSION supports one-to-one automatic device failover in case of fault. Failover is triggered by one of the following conditions:
Chassis alarm •
Channel alarm •
Loss of power •
Loss of CobraNet link •
Loss of Logic I/O •
Only alarms (e.g., heat sink alarm and channel failure alarm) trigger the failover mechanism. Warnings indicate abnormal system conditions
that do not immediately impair audio and do not trigger the failover mechanism.
The redundant amplifier must have the same configuration as the primary amplifier (i.e., amplifier module count, watts per module, load
configuration). A wire failover link cable must be connected between the primary and the redundant amplifier as shown below. Connect ground
to ground and logic 4 of the primary amplifier to logic 3 of the redundant amplifier; connect logic 3 of the primary amplifier to logic 4 of the
redundant amplifier. Leave logic 1 and 2 disconnected.
The redundant amplifier can be wired in parallel to the existing speaker line or connected to a redundant speaker line (see figure below).
Relays isolate the output terminals on the secondary AudiaFUSION unit. Relays are normally open. When a configuration is received,
relays close on the primary AudiaFUSION and remain open on the redundant AudiaFUSION. On failover, the relay positions are reversed.
After replacing the faulty amplifier, a power cycle is required to recover from failover. The primary device will resume control after the fail
condition is cleared and the unit is re-powered.
Logic I/O
Class 2 Wiring
1
2
3
4
Logic I/O
Class 2 Wiring
1
2
3
4 Primary AudiaFUSION Redundant AudiaFUSION
Primary AudiaFUSION
Redundant AudiaFUSION
Redundant Wiring
Primary AudiaFUSION
Redundant AudiaFUSION
Parallel Wiring