Power Supply Calculations
78
Document #15668 Rev.I 04/20/98 P/N 15668:I
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.
Notes:
1.
TB4, Terminals 1 & 2; nonregulated 24 VDC, 2.5 amps
2.
TB4, Terminals 3 & 4; filtered 24 VDC +/-5% 120Hz ripple @ 10 mV
RMS
3.
TB4, Terminals 5 & 6; filtered 24 VDC +/-5% 120Hz ripple @ 10 mV
RMS
4.
TB4, Terminals 3 & 4; nonresettable auxiliary power, 300 mA
5.
TB4, Terminals 5 & 6; resettable smoke detector power, 300 mA
6.
Refer to Current Limitations on following page
TABLE A-2:
Filtered Load in Standby - External Devices Connected to TB4 Only
Device Type
# of Devices
Standby
Current
(amps)
Total Current
(amps)
Main Circuit Board
1
X
0.08
=
0.08
RTM-8F
[ ] one max.
X
0.009
=
ACM-8RF
[ ]
X
0.030
=
AFM-16ATX
AFM-32AX
[ ] one max.
X
0.04
=
AEM-16ATF
AEM-32AF
[ ]
X
0.002
=
AFM-16ATF
AFM-32AF
[ ]
X
0.04
=
AFM-16AF
[ ]
X
0.025
=
UDACT-F
[ ] one max.
X
0.04
=
LDM-32F
[ ]
X
0.04
=
LDM-E32F
[ ]
X
0.002
=
LCD-40 Series
[ ]
X
0.054
=
4-Wire Smoke Detector
[ ]
X
[ ]
=
Power Supervision Relay
[ ]
X
0.025
=
CP300
[ ]
X
0.00015
=
SD300
[ ]
X
0.00015
=
SD300T
[ ]
X
0.0002
=
M300
[ ]
X
0.0002
=
M301
[ ]
X
0.0002
=
M302
[ ]
X
0.007
=
BG-10LX
[ ]
X
0.0002
=
C304
[ ]
X
0.0002
=
I300
[ ]
X
0.0004
=
Sum Column for Standby Load
=
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