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PSBEN2012C
11
4.4. Standby time.
The standby time during batter-assisted operation depends on: battery capacity, battery charge level and
load current. In order to keep the standby time, the current drawn from the PSU during battery-assisted operation
should be limited. Characteristics for a 17Ah/12V SLA:
Grade 1, 2 - standby time 12h
Output current 1,4A + 0,6A battery charge
Grade 3 - standby time 30h if the faults of the main power source are reported to the Alarm Receiving
Centre - ARC (in accordance with 9.2 – PN-EN 50131-1).
Output current 0,56A + 1,5A battery charge
- standby time 60h if the faults of the main power source are reported to the Alarm Receiving
Centre - ARC (in accordance with 9.2 – PN-EN 50131-1).
Output current 0,28A + 1,5A battery charge
4.5. Battery charging time.
The PSU has a battery circuit charged with direct current. The current selection is done via
I
BAT
jumpers.
The table below shows how long it takes to charge a (fully discharged) battery up to min. 80% of its nominal
capacity.
Table 5. Battery charging time.
17Ah
battery charging time
up to capacity of 0,8*C
Charging
current [A]
Configuration of
I
BAT
jumper
10h12m
1,5
J1=
, J2=
, J3=
15h18m
1
J1=
, J2=
J3=
25h30m
0,6
J1=
, J2=
J3=
-
0,2
J1=
, J2=
J3=
4.6 Operation without a battery.
In case of an expected PSU operation without an attached battery, make a necessary configuration of
jumpers:
In this mode the automation system allows adjustments of PSU’s output voltage without indicating a failure
connected with working of the battery.
CAUTION. During operation without battery assistance the PSU does not perform any parameter
control that monitors its proper operation. Therefore, this mode ought to be chosen thoughtfully.