Honeywell MS-2 User Manual download pdf (Page 12)

Product Description Specifications

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

1.2 Specifications

AC Power - TB8

MS-2/MS-4: 120 VAC, 50/60 Hz, 2.3 amps

MS-2E/MS-4E: 240 VAC, 50 Hz, 1.15 amps

Wire size: minimum #14 AWG (2.0 mm

) with 600V insulation

Battery (sealed lead acid only) - J8

Maximum Charging Circuit - Normal Flat Charge: 27.6 VDC @ 0.8 amp

Maximum Charger Capacity: 18 Amp Hour battery (two 7 Amp Hour batteries can

be housed in the FACP cabinet. Larger batteries require a separate battery box such

as the Fire•Lite BB-17F)

Initiating Device Circuits - TB3

Alarm Zones 1 & 2 (MS-2 and MS-4)

Alarm Zones 3 & 4 (MS-4 only)

Power-limited circuitry

Operation: All zones Style B (Class B)

Normal Operating Voltage: Nominal 20 VDC, Maximum 27 VDC

Alarm Current: 15 mA minimum

Short Circuit Current: 40 mA maximum

Maximum Loop Resistance: 100 ohms

End-of-Line Resistor: 4.7KΩ, 1/2 watt (Part #71252)

Standby Current: 4 mA

Refer to Fire•Lite Device Compatibility Document for listed compatible devices

Notification Appliance Circuit(s) - TB2

One NAC on MS-2, two NACs on MS-4

Operation: Style Y (Class B)

Power-limited Circuitry

Normal Operating Voltage: Nominal 24 VDC, Maximum 27 VDC

Maximum Signaling Current: 2.5 amps total with standard transformer. 5.0 amps

total (2.5 amp maximum per NAC) with optional transformer on MS-4 only

Maximum Line Impedance: 1.5 volt drop end-of-line

End-of-Line Resistor: 4.7KΩ, 1/2 watt (Part #71252)

Refer to Fire•Lite Device Compatibility Document for compatible listed devices

Form-C Relays

Trouble Relay TB5 (fail-safe)

Alarm Relay TB6

Supervisory Relay TB7 (MS-4 only)

Relay Contact Ratings: 2 amps @ 30 VAC (resistive)

Resettable Special Application Power - TB1

Operating Voltage: Nominal 24 VDC

Maximum Available Current: 500 mA - appropriate for powering 4-wire smoke

detectors (see note 1)

Power-limited Circuitry

Refer to Fire•Lite Device Compatibility Document for compatible listed devices

Nonresettable Special Application Power - TB1 (MS-4 only)

Operating Voltage: Nominal 24 VDC

Maximum Available Current: 500 mA (see note 1)

Power-limited Circuitry

Refer to Fire•Lite Device Compatibility Document for compatible listed devices

1. Total current for resettable power and one Notification Appliance Circuit must

not exceed 3.0 amps for the MS-2. Total current for nonresettable power,

resettable power and two Notification Appliance Circuits must not exceed 6.0

amps for the MS-4 (requires optional second transformer)

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Honeywell MS-2 User Manual Page 12

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