NFPA Standard-Specific Requirements
148 MS-5UD/MS-10UD Series PN 52626:B 8/01/2008
B.1 Central Station/Remote Station Transmitter:
Connection to FACP Dry Contacts
The dry contacts of the FACP programmable relays can be used to trip a UL-864 Listed Central
Station/Remote Station Transmitter. The FACP contacts must be supervised by the Central Station/
Remote Station Transmitter module using End-of-Line Resistors (ELRs) with a value determined
by the Transmitter manufacturer. Power is also provided by the Central Station/Remote Station
Transmitter manufacturer. Refer to the Central Station/Remote Station Transmitter manufacturer’s
manual for details.
Figure B.5 FACP Dry Contacts Connection to Central Station/Remote Station Transmitter
Typical Central Station/Remote Station Transmitter Module
Typical Input Zone Triggers
Fire Alarm Control Panel
Alarm
Superv.
Trouble*
*Note: The Trouble Relay is a
fail-safe relay. With power
applied to the FACP and no
troubles in the panel, the wiring
should be connected to the NO
and C contacts as indicated in the
illustration.
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