Standby Battery Calculation - Bosch ICP-EZM2 System Reference Manual

Easy Series Control Panel
Phone line trouble voltage
Control Panel Power Requirements
AC Input Line Voltage
Total Alarm Power:
Auxiliary Power:
Current Draw:
Voltage:
Battery:
8.1.1

Standby Battery Calculation

Use the following formula to calculate standby battery capacity for 24 hr of standby power:
(Total B _____ x 24 hr) + (Total C _____ x 0.067 hr) + 10% reserve = Total battery Ah requiredIf
the Column C total exceeds 1.4 A, use an external power supply.
Model Qty
Used
Control Panel
Control
Center
Bosch Security Systems, Inc.
Trouble condition occurs when the phone line voltage is between 1.10 V
and 4.75 V
Use a UL Listed 18 V Class 2 transformer (22 VAC, VA 50/60 Hz)
1.4 A (AC power and standby battery; intrusion applications only).
With a 7.0 Ah battery, the following current draws apply to all outputs and
devices connected to the system:
– Up to 170 mA for 24 hr for fire and combined fire/burglary
applications
– Up to 1.2 A for other applications
12 VDC, 1.0 A maximum. Includes 110 mA for each control center
connected to the system, and up to 400 mA for the programmable
outputs.
85 mA standby; 160 mA alarm with all outputs activated
12 VDC nominal (11.2 VDC to 12.3 VDC)
The control panel stops processing point faults when the voltage drops
below 9.5 VDC.
D126 (7 Ah) or D1218 (18 Ah) sealed, lead acid rechargeable
1.7 A maximum recharging current
Low battery condition occurs when battery drops below 12 VDC
If AC power fails and the battery drops below 9.5 VDC, the control panel
stops processing point faults. Disconnect the battery under these
conditions.
Maximum auxiliary current to recharge standby battery within 72 hours:
– 12 V, 7 Ah Battery: 400 mA
– 12 V, 18 Ah Battery: 900 mA
In an NF A2P certified installation, use a battery Yuasa NP17-12IFR
A
AC Power On Normal
Current
Each Unit Total
(mA) (mA)
85 x1 85
110 x Qty
System Reference Guide
Device Specifications and Overview | en
B
AC Power Off Minimum
Current
Each Unit Total
(mA) (mA)
85 x1 85
110 xQty
C
In Alarm Maximum Current
Each Unit Total
(mA) (mA)
160 x1 160
165 xQty
2014.09 | 01 | F.01U.306.221
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