Fire-Lite MPS-24B/BE/BF Technical Supplement - Manual

MPS-24B/BE/BF
Technical Supplement
Document 50289 Rev A 5/4/95 ECN 95-219
LED Indicators
Ground Fault (-)
Ground Fault (+)
Battery Fail
AC Power Fail
Supervisory Cable
To optional power supply
Cut R55 to disable
Earth Fault Detection
Cut JP2 to disable the battery
charger when employing the Remote
Battery Charger.
* Cut JP1 to make Four-
Wire Smoke Detector Power
on TB2 Terminals 1 and 2 a
nonresettable circuit.
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.
Notification Appliance power
+ 24 VDC power-limited, RMS-regulated, non-
resettable, 2.0 amps (in alarm) max. Power is
supervised by output module.
This output is not
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.
Do not use the minus
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
-
Earth Ground
Connect to chassis with a
Grounding Cable Assembly.
Earth Ground
Primary Power
120 VAC, 50/60 HZ, 1.8 amps max.
Neutral Hot
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.