Panasonic Electric Works Nordic AB
MEW01351
Rev: -
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
154
In order to not damage the batteries, the voltage output will be
switched off at approx. 20.8 V. This only happens in case of
no main power source (230 V AC), i.e. when the backup
batteries are used as power source.
If the battery voltage is below 10 V (5 V per battery), the
battery charging will be turned off. (The batteries are
damaged and have to be changed.)
In case of no mains and after a time delay of 1-300 minutes
(programmable in WinG3 but max. 30 min. according to the
EN54-2 standard), the following fault message will be shown:
FAULT: Mains, control unit xx
25.2
Current consumption calculations
For each control unit, in order to get a current consumption overview
so that the rectifier will not be overloaded and to check / calculate the
required battery capacity, the total EBL512 G3 current consumption
(excl. battery charging current) have to be calculated.
NOTE!
There
is no battery charging during fire alarm.
Use the values in chapter "Current consumption", page 148, to
calculate the following current consumptions:
I
CN
= current consumption for the control unit
141
in normal
state.
I
RN
= current consumption for all other equipment
142
in
normal state.
I
CA
= current consumption for the control unit
141
in alarm
state.
I
RA
= current consumption for all other equipment
143
in
alarm state.
The total EBL512 G3 current consumption in
Normal
(
quiescent
)
state
:
I
TN
=
I
CN
+
I
RN
The total EBL512 G3 current consumption in
Alarm
(
activated
)
state
:
I
TA
=
I
CA
+
I
RA
Comments regarding (
I
TN
):
I
TN
shall be <
0.93 A
if the built-in battery is a 28 Ah battery, because
this results (theoretically) in 30 hours battery backup time.
I
TN
is max. 3.3 A but if the required battery backup time is 30 hours
I
TN
can be max.
0.93 A
.
Comments regarding (
I
TA
):
141
Including the COM loop units but excl. the battery charging current.
142
External equipment connected to the control unit (e.g. ext. FBPs, door
release magnets, relays, routing equipment, etc.).
143
External equipment connected to the control unit (e.g. ext. FBPs,
sounders, relays, routing equipment, etc.).
