Circuits; Components; Optional Modules And Accessories - Fire-Lite MS-2 Instruction Manual

Product Description

1.4 Circuits

Input Circuits
Two input IDCs (Initiating Device Circuits) on the MS-2 and four IDCs on the MS-4 provide Style
B (Class B) configurations. All IDCs accept i
detectors, four-wire smoke detectors and normally-open contact devices.
Output Circuits
• 24 VDC resettable special application power output - 500 mA
• 24 VDC nonresettable special application power output (MS-4 only) - 500 mA
• 24 volt battery charger (up to 18 Amp Hour batteries)
Notification Appliance Circuits
One NAC (Notification Appliance Circuit) Style Y (Class B) on the MS-2
Two NACs Style Y (Class B) on the MS-4
Relays
Alarm Relay
Trouble Relay (fail-safe)
Supervisory Relay (MS-4 only)
Form-C contacts rated 2.0 amps @ 30 VDC (resistive)

1.5 Components

Main Circuit Board
The main circuit board contains the system's CPU, power supply, other primary components and
wiring interface connectors. Optional modules plug in and are mounted to the main circuit board.
Cabinet
The backbox measures 14.5" (36.8 cm) x 15.218" (38.65 cm) x 2.875" (7.3 cm) and provides space
for two batteries (up to 7 Amp Hours). Also included is a dress panel which mounts inside the
cabinet.
Transformer Assembly
One 100VA transformer is provided standard with the FACP. An optional second 100VA
transformer is available for the MS-4 to provide maximum accessory power.
Batteries
The cabinet provides space for two 7 Amp Hour batteries (larger batteries up to 18 Amp Hour,
require use of a UL listed battery box such as the BB-17F). Batteries must be ordered separately.

1.6 Optional Modules and Accessories

CAC-4 Class A Converter Module (MS-4 only)
The CAC-4 Module can be used to convert the Style B (Class B) Initiating Device Circuits to Style
D (Class A) and Style Y (Class B) Notification Appliance Circuits to Style Z (Class A). The
module connects to J1 on the MS-4 main circuit board.
4XTMF Transmitter Module (MS-2 and MS-4)
The 4XTMF provides a supervised output for local energy municipal box transmitter and alarm and
trouble reverse polarity. It includes a disable switch and disable trouble LED. A module jumper
option allows the reverse polarity circuit to open with a system trouble condition if no alarm
14
detectors as well as conventional two-wire smoke
3
MS-2 & MS-4 Series Manual — P/N 51512:G2 10/18/2011
Circuits