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Power Supply Calculations
A.2 The Main Power Supply
The MS-9200 provides filtered power for operating the fire alarm control panel, operating external devices and oper-
ating the standby battery. The power for operating external devices is limited. Use Table A-2 (standby or nonalarm)
and Table A-3 (alarm) to determine if external loading is within the capabilities of the MS-9200 power supply.
Concerning smoke detectors: refer to the manufacturer's data sheet packaged with each smoke detector to find the
standby and alarm current draws to use in the following tables. Be sure to power detectors from TB4, Terminals 5
and 6.
Filtered Load in Standby - External Devices Connected to TB4 Only
TABLE A-2:
Device Type
Main Circuit Board
RTM-8F
ACM-8RF
AFM-16ATX
AFM-32AX
AEM-16ATF
AEM-32AF
AFM-16ATF
AFM-32AF
AFM-16AF
UDACT-F
LDM-32F
LDM-E32F
LCD-40 Series
4-Wire Smoke Detector
Power Supervision Relay
CP300
SD300
SD300T
M300
M301
M302
BG-10LX
C304
I300
Auxiliary Devices Powered
from TB4
Notes:
TB4, Terminals 1 & 2; nonregulated 24 VDC, 2.5 amps
1.
TB4, Terminals 3 & 4; filtered 24 VDC +/-5% 120Hz ripple @ 10 mV
2.
TB4, Terminals 5 & 6; filtered 24 VDC +/-5% 120Hz ripple @ 10 mV
3.
TB4, Terminals 3 & 4; nonresettable auxiliary power, 300 mA
4.
TB4, Terminals 5 & 6; resettable smoke detector power, 300 mA
5.
Refer to Current Limitations on following page
6.
78
# of Devices
1
[
] one max.
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[
] one max.
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Sum Column for Standby Load
Document #50428
Standby
Current
(amps)
X
0.08
X
0.009
X
0.030
X
0.04
X
0.002
X
0.04
X
0.025
X
0.04
X
0.04
X
0.002
X
0.054
X
[
]
X
0.025
X
0.00015
X
0.00015
X
0.0002
X
0.0002
X
0.0002
X
0.007
X
0.0002
X
0.0002
X
0.0004
X
[
]
RMS
RMS
Rev.C1
2/15/99
P/N 50428:C1
Total Current
(amps)
=
0.08
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
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