FA-300 Alarm Bar User’s Guide
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7.1 Checking FMC2000 Relay Continuity
Each relay in an FMC2000 controller has a common
terminal and a normally open (NO) and normally closed
(NC) terminal. If you think the wiring to the FA-300 Alarm
Bar is correct and that the FA-300 Alarm Bar is in working
order, but that an alarm signal is not being passed to it,
check the relays in the FMC2000 controller. Use a
continuity tester or voltmeter (set to measure resistance)
to check the relay’s activity.
1. Enter the Relay Diagnostic menu. Press Enter,
followed by the password (the default is 123456).
2. Touch the probes of a continuity tester or voltmeter
to the NO and COM terminals on the relay’s relay
block inside the FMC2000.
Testing continuity of Normally
Open portion of relay.
Testing continuity of Normally
Closed portion of relay.