Honeywell MS-2 manual Circuits, Components

Product Description Circuits

Local Piezo Sounder

A piezo sounder provides separate and distinct sounds for alarm, trouble, maintenance and supervisory conditions as follows:

•Alarm - on steady

•Trouble - pulse 1 second on and 1 second off

•Maintenance - pulse ½ second on and ½ second off

•Supervisory - pulse ½ second on and ½ second off

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 I3 detectors as well as conventional two-wire smoke 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 VAC (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.

14 MS-2/MS-4 PN 51512:E 01/18/05