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Before You Begin Installing
151153
2-6
2.6.2
Current Draw Worksheet
For each RPS-1000* in the installation, use this worksheet to determine current
requirements during alarm/battery standby operation. (Copy this page if additional
space is required.)
*Use a separate worksheet for each RPS-1000.
Table 2-4: Current Draw Calculations
Device
Number 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.
RPS-1000 Intelligent Power Module
(Current draw from battery)
1*
Standby:
40 mA 40 mA
Alarm:
160 mA
160 mA
Additional RPS-1000
(Daisy-chained to this module)
(7 max.)
Standby:
10 mA
Alarm:
10 mA
Addressable Devices
(381 max.)
Standby:
0.55 mA
Alarm:
0.55 mA
5815XL SLC Expander
(2 max.)
Standby:
55 mA
mA
Alarm:
55 mA
mA
RA-1000 or RA-100 Remote Fire
Alarm Annunciator
(8 max.)
Standby:
20 mA
mA
Alarm:
25 mA
mA
5824 Serial / Parallel Module
(2 max.)
Standby:
45 mA
mA
Alarm:
45 mA
mA
5865-4 LED Annunciator
(with reset and silence switches)
(8 max.)
Standby:
35 mA
mA
Alarm:
145 mA
mA
5865-3 LED Annunciator
Standby:
35 mA
mA
Alarm:
145 mA
mA
5880 Generic LED Driver Module
Standby:
35 mA
mA
Alarm:
200 mA
mA
A
Total System Current
**Auxiliary Devices
Refer to devices manual for current rating.
Alarm/Standby:
mA
mA
mA
Alarm/Standby:
mA
mA
mA
Alarm/Standby:
mA
mA
mA
Alarm/Standby:
mA
mA
mA
B
Auxiliary Devices Current
Alarm:
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 .001):
A
A
F
Number of standby hours (24 or 60 for NFPA 72, chapter 1, 1-5.2.5):
H
G
Multiply lines E and F.
Total standby AH
AH
H
Alarm sounding period in hours. (For example, 5 minutes = .0833 hours)
H
I
Multiply lines E and H.
Total alarm AH
AH
J
***Add lines G and I.
Total ampere hours required
AH