Protectowire 2000 FireSystem Dokumentacja Pobierz pdf (Strona 50)

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The AM-91 Alarm Notification Appliance Circuit Adapter Module converts the two Class B system Alarm Notification Appliance

Circuits of the Main Board MB-91 to Class A type circuits. This provides 4 wire alarm notification appliance circuits in lieu of the

standard 2 wire circuits.

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The two wire Class B circuits are wired into the module input terminals. The AM-91 then conditions and converts the circuits to

four wire Class A alarm notification appliance circuits. This alarm notification control appliance circuit is fully supervised with a

reverse polarity current flow. A short or open in the field wiring is detected by the system controls. Once an alarm is initiated the

circuit immediately reverses polarity and 24V FWR power is supplied to the alarm notification appliances. If a single break occurs

in the circuit all devices will still be supplied power in an alarm state due to the nature of a Class A wiring configuration.

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Note: Polarity of Notification

Appliance Circuits shown in

Standby Condition.

,?<D175 24 V Full wave rectified (FWR) with battery standby

EBB5>D 2 amps per circuit 3 amps maximum combined

Maximum (2) conductor copper feed cable resistance may not exceed 1 ohm (see below)

- Maximum of 500’ (feet) Reference DS-9066

- Maximum of 300’ (feet) Reference DS-9066

- Maximum of 200’ (feet) Reference DS-9066

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Protectowire 2000 FireSystem Dokumentacja Strona 50