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11.4
FC124-ZA calculation
Type Description
Standby
[mA]
Alarm
[mA]
Panel (internally)
Sounders, etc…
Standby
[mA]
Alarm
[mA]
Standby
[mA]
Alarm
[mA]
FC124-ZA 12 zone panel 118 187
Out 1 (e.g. Sounders)
Out 2 (e.g. Sounders)
Aux. output
Accessory cards
FCA1203-Z1
(1st)
Output card 2M 2R 12 25
Out A&B (e.g. Sounders)
FCA1203-Z1
(2nd)
Output card 2M 2R
12 25
Out A&B (e.g. Sounders)
FCA1203-Z1
(3rd)
Output card 2M 2R
12 25
Out A&B (e.g. Sounders)
FTO1202-Z1 Zone indicator field 12*2 1 2.5
FTO1203-H1 EVAC Module 0.5 2.2
Standby current [A]
Alarm current [A]
If the total current of the outputs (Sounders, etc.) is higher than
10
00
mA
, then an
external power supply is required. In order to reduce the total current:
-
Power the output A&B from the external power supply (possible per card).
-
Move the Auxiliary output to the external power supply.
Choose the appropriate battery size depending on the calculated capacity.
[(Standby time × Standby current) + (Alarm time × sum alarm current)] × Aging factor = Capacity (max. 17 Ah)
_ _ h × 0._ _ _ A + 0.5 h ×
_._ _ _ A × 1.25 =
Standby time [h]: 24, 30 or 72
Alarm time [h]: 0.5 hour
Aging factor: 1.25
Standby current [A]: Total current in standby mode
Alarm current [A]: Total current in alarm mode
Capacity [Ah]: 7 Ah; 12 Ah; 17 Ah
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