Honeywell IFP-75 Installation & Operation Manual page 23

Calculating Current Draw and Standby Battery
Device
3
Auxiliary Devices
IPDACT-2 IP Communicator
IPDACT-2UD IP Communicator
CELL-MOD/CELL-CAB-SK
Auxiliary Devices Current
Notification Appliance Circuits
5495/5499 Power Supply
Notification Appliances Current:
Total current ratings of all devices in the System (line A + line B + C)
Total current ratings converted to amperes (line D x .001):
Number of standby hours (24 or 60 for NFPA 72, chapter 1, 1-5.2.5):
Multiply lines E and F.
Alarm sounding period in hours. (For example, 5 minutes = .0833 hours)
Multiply lines E and H.
4
Add lines G and I.
Multiply by the Derating Factor
Note 1: The Total does not include the isolator devices or the accessory bases.
Note 2: If you use only 24 VDC aux power, no standby or alarm current for battery calculation required, if using 24 VAC, 120 VAC or 240 VAC.
Note 3: If you use door holders, you do not need to consider the door holder current for the alarm/battery standby, because the power is removed
during that time. However, during the normal operation, the door holders draw current, and must be included in the 1.0A total current that can be
drawn from the panel.
Note 4: Use the next size battery with a capacity greater than required.
Note 5: The FACP can support 30 devices with LED's ON. This current draw is added to the panel's alarm current.
Maximum Battery Standby Load
Table 3.5 shows the maximum battery standby load for the IFP-75 based on 24 and 60 hours of standby. The standby load calculations of line
D in the Current Draw Calculation Worksheet (Table 3.5) must be less than the number shown in Table 3.5 for the battery size used and
standby hours required.
NOTE: *Required for NFPA 72 Auxiliary Protected Fire Alarm Systems for Fire Alarm Service (City Box) and Remote Station
Protected Fire Alarm Systems (Polarity Reversal) and Digital Alarm Communicator/Transmitter (DACT).
WARNING: BATTERIES
!
FARENHYT DOES NOT SUPPORT THE USE OF BATTERIES SMALLER THAN THOSE LISTED IN TABLE ABOVE. USING
A BATTERY TOO SMALL FOR THE CONFIGURATION COULD OVERLOAD THE BATTERY, RESULTING IN THE BATTERY
HAVING LESS THAN THE REQUIRED 24 HOURS STANDBY POWER. USE THE CURRENT CALCULATION WORKSHEET
TO CALCULATE THE CORRECT BATTERY AMPERES/HOUR RATING NEEDED FOR THE SYSTEM CONFIGURATION.
IFP-75/IFP-75HV Installation/Operation Manual — P/N LS10147-001SK-E:D 06/25/2021
# of Devices
Table 3.4 Current Calculation Worksheet for SD Devices (Continued)
Rechargeable Battery Size
7AH
18AH
33AH
Table 3.5 Maximum Battery Standby Load
Current per Device
Refer to devices manual for current rating.
Alarm:
Standby:
Alarm:
Standby:
Standby:
Alarm:
Alarm/Standby:
Alarm/Standby:
Alarm/Standby:
Alarm/Standby:
Refer to device manual for current rating.
24 VDC One input circuit:
Both input circuits: 30mA
Alarm:
Alarm:
Alarm:
Alarm:
Total standby AH
Total alarm AH
Total ampere hours required
NOTES
Max. Load 24hrs Standby,
5 minutes Alarm
221mA
675mA
1.1A
Prerequisites for Installation
Standby
Current
136 mA
93 mA
155 mA
98 mA
55 mA
100 mA
mA
mA
mA
mA
15mA
mA
mA
mA
mA
x 1.25
*Max. Load for 60hrs
Standby, 5 minutes Alarm
85mA
250mA
450mA
Alarm
Current
mA
mA
mA
mA
mA
mA
mA mA
mA mA
mA mA
mA mA
mA
mA
mA
mA
mA
mA
mA
mA mA
A A
H
AH
H
AH
AH
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