DSC CFP-102 Manual - Página 2

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Standby Battery

Calculation Chart

All components that draw current from the panel while it is in the 'standby' mode (AC

OFF) must be considered for the standby battery calculation. All components that draw

current while in the 'Alarm' mode must be considered for the alarm battery calculation.

Step 1:

The control panel will always draw the currents as shown in the chart.

Step 2:

Typically the alarm current is calculated assuming only one initiating zone is

in alarm. If it is required that more than one zone be considered, add 60 mA

per zone in the Alarm column. Consult the smoke detector manufacture's

installation sheet to determine the standby current of these devices. Write

that number in the 'current per device' column then multiply that number by

the number of devices on the zone. Repeat for each zone.

Step 3:

Consult the Notification Appliance installation sheet to determine the current

draw for each device connected to the NAC. For each NAC, calculate the total

current in alarm and put that number (mA) in the 'Alarm' column. Note: each

NAC can supply 1.5 Amps max. and the output voltage is 24 volts FWR.

Step 4:

Add up all the current drawn from the AUX+ output in the standby and alarm

mode and put those totals in the 'standby' and 'alarm' columns.

Step 5:

For each module added to the system, multiply the number of modules times

the module's 'standby' and 'alarm' currents and write those totals in the

'alarm' and 'standby' columns.

Step 6:

Add up all the currents in the 'standby' column and the 'Alarm' column.

Step 7:

Convert the 'standby' and 'alarm' currents from mA to Amps. (divide mA by

1000)

Step 8:

Write in the 'standby' time required. (24 or 60 Hr.)

Step 9:

Multiply the 'standby' Amps times the 'standby' time to get the 'standby'

Amp-Hr. required.

Step 10: Write in the 'alarm' time required in hours. (5 min. = .08 Hr.)

Step 11: Multiply the 'alarm' Amps times the 'alarm' time to get the 'alarm' Amp-Hr

required.

Step 12: Add the 'standby' Amp-Hr. to the 'alarm' Amp-Hr. for the total Amp-Hr.

required.

Step 13: Multiply the total Amp-Hr. times 1.20 for the

to support the system for the selected 'standby time and the

required

selected 'alarm' time.

For details on the control panel and modules, see their respective installation docu-

ments.

WARNING: Please refer to the System Instruction manual for information on limita-

tions regarding product use and function and information on the limitations as to

liability of the manufacturer.

Technical Help Desk (Canada & US): 1-800-387-3630 • Printed in Canada • 29005851 R001

minimum Amp-Hr. battery