SSG-0101 ZetaAlarm Systems
8
Fault Relay
The power supply source is provided with a fault relay to indicate
any anomaly to a remote control unit. On idle, this relay is energized
to indicate normal operation; if any fault occurs, it is immediately
triggered except in the event of a 220 Vac mains power supply loss,
which is indicated after a delay of some 8 minutes in order to
prevent failures due to intermittent blackouts.
Fault Relay Operation
Connector J4 (FAULT) with three terminals
Terminal 1 (Left) C common
Terminal 2 (Center) NO or normally open
Terminal 3 (Right) NC or normally closed
The fault relay functions as follows:
Stop control (no power) or indicating fault
Between C and NC —> continuity
Between C and NO —> circuit open
Control in fault-free operation, i.e. NORMAL STATE
Between C and NC —> circuit open
Between C and NO —> continuity
