Appendix A. Battery Standby Calculations; Current Draw For System Components - Simplex 4006-9121 Technical Manual

Appendix A. Battery Standby Calculations

Current Draw for System Components

Each component of the panel has a specified alarm and standby current rating. To calculate the current draw for the system,
add the specified standby current for each module and device to obtain an alarm and a standby current rating for your system.
Also refer to "Module Current Specifications" at the end of this appendix.
Note: Auxiliary power from the system's AUX 24 V taps must also be included in the calculation, unless that power is
switched off during battery standby. For example, door holders operated from 24 V need not be included if they are discon-
nected via a relay during a battery standby condition. Notification Appliance load must be included in the alarm current total.
(5 IDCs, 30 detectors each
Remote LCD Annunciator
Remote LED Annunciator
City Connect Module or Relay Module
1. Identify Standby Time (C), in hours. C = ______ (typically 4, 24, 48, or 60 hr)
2. From previous calculations, locate total Alarm Current (B) in amperes. B = ______
3. Identify Alarm Time (D) in minutes. D = ______ (typically 5, 10, or 15 min)
4. Using the values in Steps 1-4, perform an Initial Battery Calculation per the following:
5. (A x C) + (0.0167 x B x D) = _______ Ah (Ah = ampere hours)
6. Select a battery size LARGER than the number from the Initial Battery Calculation from the following list of batteries
using the 20 Hour Rating value:
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Module
Main System Board
Expansion IDC Module
(30 detectors per IDC)
Expansion Power Supply
Auxiliary Relay Module
Class A Adapter
Total Standby Current:____________
Standby Current
130 mA
50 mA
50 mA
0 mA + 10 mA
per energized relay
0 mA + 10 mA
per zone in trouble
100 mA
100 mA
30 mA
Total Alarm Current:____________
A-1
Alarm Current
160 mA + 60 mA
per zone in alarm
50 mA + 60 mA
per zone in alarm
60 mA
0 mA + 10 mA
per energized relay
0 mA + 10 mA
per zone in trouble
150 mA
100 mA
60 mA