Fire-Lite MS-9050UDC Addressable Fire Alarm Control Panel - Manual (Page 29)

MS-9050 Series Manual — P/N 52413:G 4/14/2014 29
Relays Installation
2.4 Relays
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 must be nonpower-limited. Refer to UL Power-limited wiring require-
ments.
AC Connection to
Transformer leads:
HOT
NEUTRAL
Battery Connection
to J1 on FACP
Ground Stud
90
50
ud
p
o
wr
.c
d
r
Figure 2.5 Relay Terminals
Relay contacts shown with power applied to panel
and no active troubles, alarms or supervisories
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.
905
0u
dr
el
y.w
m
f