Fire-Lite MPS-24B-BE-BF User Manual

Power-limited Notification Appliance Power

The +24 VDC regulated, nonresettable power available on TB2
Terminal 3 is power-limited only when used with the minus return on
TB2 Terminal 4.

Do not use the minus return on TB2 Terminal 2 with

the +24 VDC power on TB2 Terminal 3. Refer to the illustration below.

+

Four-Wire Smoke Detector/Annunciator Power

+ 24 VDC (20.4-26.4, 200 mV ripple), 200 mA max.
Filtered, regulated and resettable*. Power-limited but
when used for four-wire detectors, must be supervised by

-

a UL listed Power Supervision Relay.

+

-

Primary Power

120 VAC, 50/60 HZ, 1.8 amps max.

Neutral Hot

Earth Ground

Earth Ground

Connect to chassis with a
Grounding Cable Assembly.

Cut R55 to disable
Earth Fault Detection

MPS-24B/BE/BF

Technical Supplement

Document 50289 Rev A 5/4/95 ECN 95-219

Notification Appliance power
+ 24 VDC power-limited, RMS-regulated, non­resettable, 2.0 amps (in alarm) max. Power is
supervised by output module.

suitable for powering annunciators!

CAUTION: The +24 VDC provided on TB2 Terminal 3
is power-limited only when used with the minus
return on TB2 Terminal 4.

return on TB2 Terminal 2 with the +24 VDC power on
TB2 Terminal 3.

Secondary Power

27.6 VDC, 6.5 to 17 AH. Supervised and power-limited.
Fast charge =750mA max., trickle charge = 20 mA (typ).

Battery +
Battery -

This output is not

Do not use the minus

Cut JP2 to disable the battery
charger when employing the Remote
Battery Charger.

LED Indicators

Ground Fault (-)
Ground Fault (+)
Battery Fail
AC Power Fail

Supervisory Cable
To optional power supply

* Cut JP1 to make Four­Wire Smoke Detector Power
on TB2 Terminals 1 and 2 a
nonresettable circuit.