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Supervision via FACP Notification Appliance Circuit Trouble Supervision

FCPS-24S PN 51977:C1 08/06/03 23

SECTION 4 Trouble Supervision

4.1 Supervision via FACP Notification Appliance Circuit

4.1.1 Supervision of FACP to FCPS wiring

The FACP (Fire Alarm Control Panel) supervises the connection between itself and the

FCPS-24S via the control panels NAC End-of-Line Resistor (ELR). The ELR must be

installed at the FCPS end of the circuit, after the last notification appliance on the

circuit. If no additional devices are connected from the FCPS Control Input terminals,

the ELR must be connected across terminals 5 & 6 for Control Input Circuit #1 and

across terminals 7 & 8 for Control Input Circuit #2. An open or short anywhere on the

control panel’s NAC or power supply NAC will be detected at the FACP as an NAC

trouble.

IMPORTANT: If additional notification appliances are connected to the Out terminals

5 & 6 of Control Input Circuit #1 or extended from Control Input Circuit #2 Terminals

7 & 8, the ELR must

be installed after the last device on the circuit.

4.1.2 Supervision of FCPS-24S Faults

The FACP will detect FCPS power supply faults as an open circuit condition on its

NAC. An internal trouble contact is located between TB4 Terminal 3 (In+) and TB4

Terminal 5 (Out+). Any of the following conditions will cause the trouble contact to

open, provided the FACP Notification Appliance Circuit is not

in alarm. The following

trouble conditions will cause a general NAC trouble:

• A field wiring fault on the NAC output of the power supply

• An AC fail condition at the power supply

• A battery fail condition at the power supply

• A battery charger fail on the power supply

• A ground fault condition on the power supply

Any power supply trouble will break the connection between the FACP and the ELR

connected to Control Input #1 provided the FACP’s NAC is not

in alarm. The FACP’s

ELR must be placed after the last notification appliance connected to FCPS terminals 5

& 6 on TB4 or, if no devices are connected to these terminals, the ELR must be

connected directly across terminals 5 & 6.

If trouble monitoring is required when the power supply is in alarm, the Trouble Relay

at TB5 can be used for this purpose. An addressable monitor module may be used to

monitor these contacts. Refer to Trouble Relay in the following section.

Note: Control Input #2 (terminals 7 & 8) cannot be used to supervise the power supply

for internal troubles, but an ELR is still required for FACP wiring supervision.

Notifier FCPS-24S8 User Manual

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