Current Consumption Calculations - Panasonic EBL128 Planning Instructions

Panasonic Electric Works Nordic AB
MEW01090 Rev: 3
20.2
 Every 4
th
hour the battery circuit (connection cables, fuses, etc.)
resistance is checked. A resistance over 1.4 ohm will generate
a fault and the following fault message will be shown:
FAULT: Low battery capacity
Date: MM-DD
NOTE! Regarding this fault and the New Zealand convention, see
chapter "FAULT: Low battery capacity", page 109.
 In case of no main power source (230 V AC), i.e. when the
backup battery is used as the only power source, the battery
will be switched off at a battery voltage below 20.8 V.
c.i.e will in this case be totally powerless (dead). Only the
battery voltage will be checked and when it is at least 22 V,
the battery will be switched on and the c.i.e. will work again.

Current consumption calculations

In order not to overload the rectifier and to check / calculate the
required back-up battery capacity, the total EBL128 current
consumption (excl. battery charging current) has to be calculated.
NOTE! There is no battery charging when fire alarm is activated in
EBL128.
Use the values in chapter "Current consumption", page 134, to
calculate the following current consumptions:
 I
CN
= the current consumption for EBL128
state.
 I
RN
= the current consumption for all other equipment
normal state.
 I
CA
= the current consumption for EBL128
 I
RA
= the current consumption for all other equipment
alarm state.
The total EBL128 current consumption in Normal ( quiescent ) state:
TN CN RN
I = I + I
The total EBL128 current consumption in Alarm ( activated ) state:
TA CA RA
I = I + I
TN
Comments regarding (I
TN
I has to be < 0.7 A.
147
This is done in order not to damage the battery.
148
Including the COM loop units but excl. the battery charging current.
149
External equipment connected to the control unit (e.g. ext. FBPs, door
release magnets, relays, routing equipment, etc.).
150
External equipment connected to the control unit (e.g. ext. FBPs,
sounders, relays, routing equipment, etc.).
137
EBL128 Planning Instructions V1.1.x
Time: HH:MM
):
147
The
148
in normal
149
in
148
in alarm state.
150
in