15586 Rev E 5/14/93 P/N 15586:E 29
Table 2: Power Supply Loading
Basic Control Panel (all zones in alarm)
If using the Zone Relay Module, add
64 mA for the MS-4012 or 32 mA for the MS-4024
If using General Alarm & Trouble Module: add
18 mA for the MS-4012 or 10 mA for the MS-4024
If using the Transmitter Module (40xxTM), add 13 mA
If using the Reverse Polarity Trouble output, add 10 mA
Current (in mA) drawn from Non-resettable Power (TB3)
Place subtotal from line d, Table 1 here
Add column for Total Alarm Current:
(Total Alarm Current cannot exceed 550 mA)
Standby Battery Current Standby Time
Convert the total from Table 1 24 or 60 hours
to amps and enter here
amps X hours =
Enter 0.3 for 5 minutes in alarm
or 0.6 for 10 minutes in alarm +
Add Standby and Alarm amp/hours =
Select a battery with a greater amp/hour rating.
Table 3: Ampere-Hour Calculations
Standby
amp/hours
Alarm
amp/hours
Total amp/hours
needed
☞☞
☞☞
☞
340 mA340 mA
340 mA340 mA
340 mA
Notes: * NFPA 72 Local and 72 Proprietary Protected Premises systems require 24 hours of standby.
* NFPA 72 Auxiliary and 72 Remote Station systems require 60 hours of standby.
* The battery charger in this panel will charge a maximum of 9 AH batteries within 48 hours (6 AH minimum).
(Batteries larger than 7-AH battery will have to be mounted in a separate cabinet adjacent to panel).
Batteries available from FireLite
PS-1242 4.2 AH @ 12 VDC (MS-4012 requires two)
PS-1270 7.0 AH @ 12 VDC (MS-4024 requires two)
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