Relays; Notification Appliance Circuits - Fire-Lite MS-9200UD User Manual

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2.4 Relays

Note that the programmable relay labeled as
Relay 1 is factory default programmed as
Alarm and programmable Relay 3 is factory
default programmed as Supervisory.
The relay labeled Relay 2 is fixed as a
Trouble relay and cannot be changed. It is a
fail-safe relay which will transfer on any
trouble or total power failure.

2.5 Notification Appliance Circuits

See Page
Reference
Manual

The FACP provides two programmable Form-C relays and one fixed fail-safe Form-C
trouble relay, all with contacts rated for 2.0 amps @ 30 VDC (resistive) or 0.5 amps @
30 VAC (resistive).
Note that relay connections may be power-limited or nonpower-limited, provided that
0.25" spacing is maintained between conductors of power-limited and nonpower-
limited circuits. Refer to UL Power-limited wiring requirements.
TB7
RELAY 3
NO NC C
Relay contacts shown with power applied to panel and
no active troubles, alarms or supervisories
Figure 2.6 Relay Terminals
The control panel provides four Style Y (Class B) or two Style Z (Class A) NACs
(Notification Appliance Circuits). Each circuit is capable of 2.5 amps of current. Total
current in alarm for all external devices cannot exceed 6.0 amps (refer to "Calculating
the System Current Draw" on page 165). Use UL listed 24 VDC notification
appliances only. Circuits are supervised and power-limited. Refer to the Fire•Lite
Device Compatibility Document for a listing of compatible notification appliances.
The NACs, which are located on the main circuit board, may be expanded via the
Fire•Lite FCPS Series field charger/power supplies.
The following sections describe the configuration and wiring of Style Y and Style Z
Notification Appliance Circuits on the MS-9200UD main circuit board. The NACs are
configured for Style Y (Class B) from the factory. Refer to "Configuring NACs" on
page 33 for information on changing the NAC configuration to Style Z (Class A).
TB6
TB5
RELAY 1 RELAY 2
NO NC C NO NC C
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