26 IFP-300 Series Manual — P/N LS10145-001SK-E:C 4/6/2022
Prerequisites for Installation Calculating Current Draw and Standby Battery
3.5.4 Current Draw Worksheet for SD SLC Devices
Use Table 3.4 to determine current requirements during the alarm/battery standby operation when the SD SLC devices are installed. You can
install up to 127 SD devices per panel, in any combination.
IPDACT-2 IP Communicator Standby: 93 mA mA
Alarm: 136 mA mA
IPDACT-2UD IP Communicator Standby: 98 mA mA
Alarm: 155 mA mA
CELL-MOD/CELL-CAB-SK Standby: 55 mA mA
Alarm: 100 mA mA
HWF2-COM Series Standby: 210 mA mA
Alarm: 290 mA mA
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
B Auxiliary Devices Current
5
Notification Devices Refer to device manual for current rating
5495/5499 Power Supply Standby: 75 mA
mA
Alarm: 205 mA
mA
Alarm: mA
mA
Alarm: mA
mA
Alarm: mA
mA
C Notification Appliances Current
mA
D Total current ratings of all devices in system (line A + line B + C) mA mA
E Total current ratings converted to amperes (line D x 0.001): A A
F Number of standby hours H
G Multiply lines E and F. Total standby AH AH
H Alarm sounding period in hours. (For example, 5 minutes = 0.0833 hours) H
I Multiply lines E and H. Total alarm AH
AH
J Add lines G and I. AH
Multiply by the Derating Factor 1.25
Total ampere hours required
6
AH
1 The FACP can only support 5 devices with LEDs on. The current draw has been added to the panels alarm current.
2 Total does not include isolator devices or accessory bases.
3 The SK-BEAM-T draws a maximum of 500mA from auxiliary power when the test feature is used. This should be considered when
determining auxiliary power capacity but not calculated into current requirements for everyday operation.
4 Maximum SBUS address capacity is determined by the amount of SBUS bandwidth consumed by each SBUS module. Refer to
Section 4.6.2 for SBUS limitations.
5 If there are door holders in the system, there is no need to consider door holder current for alarm/battery standby, because power is
removed during that time. However, during normal operation, door holders draw current and must be included in the 1.8 A total current that
can be drawn from the panel.
6 Use next size battery with capacity greater than required.
Device # of Devices Current per Device
Standby
Current
Alarm Current
Table 3.3 Current Draw Worksheet for SK SLC Devices (Continued)
Device # of Devices Current per Device
Standby
Current
Alarm Current
For each device, use this formula: This column X This column = Current per number of devices.
Fire Panel
(Current draw from battery)
1 Standby 190 mA 190 mA
Alarm: 250 mA 250 mA
1
Table 3.4 Current Calculation Worksheet for SD Devices
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