Biamp PARM-1 - Manual (Page 5)

5
VOciA PAge ActiVe RelAy MOdule (PARM-1) ReAR PAnel
Rear Panel
The rear panel of the PARM-1 has four 6–way connectors, each of which provides connections
for two relays.
The relay numbers correspond to the AM-600 amplifier channel of that number (see amplifier
channel numbers printed above the AM600 amplifier modules on the VA-8600 rear panel).
Connections are labeled C, NC and NO. Each relay connects C to NC (Normally Closed) when
the relay is de-energized (no paging activity); and C to NO (Normally Open) when the relay is
energized (during paging activity).
Connections are via 3.5mm pluggable screw terminal blocks (supplied with PARM-1).
If channel or device failover is enabled for amplifier channels associated with a PARM-1
module, relay contacts must be interconnected in order that the desired functionality is achieved
from both the primary and secondary amplifier channels. For example, if channels 1 and 2 of a
VA-8600 are configured as a failover-pair relay circuits 1 and 2 on the PARM-1 must be
interconnected. If using Normally Open (NO) type connections, wire the C and NO terminals for
each in parallel. If using Normally Closed (NC) type connections, wire the C and NC of Relay 1
in series with the C and NC terminals of Relay 2. Similarly if configuring two VA-8600 units for
device failover, interconnect between primary and secondary units the PARM-1 relay for each
used channel (i.e. Channel 1 relay of the Primary VA-8600 PARM-1 to Channel 1 relay of the
Secondary VA-8600 PARM-1, etc).
Ensure that connections to the relays do not exceed the specified maximum ratings.
C
NC
NO
C
NC
NO
3
4
C
NC
NO
C
NC
NO
5
6
C
NC
NO
C
NC
NO
7
8
C
NC
NO
C
NC
NO
1
2
PARM-1
Page Active Relay
s