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PSBEN5012E/LCD
BLACK POWER
6
3. Technical description.
3.1 General description.
The buffer power supply is designed in accordance with the requirements of the EN 50131-6 standard,
grade 1÷3 and II environmental class. It is intended for an uninterrupted supply of alarm system devices requiring
stabilized voltage of 12VDC (+/-15%).
Depending on a required protection level of the alarm system in the installation place, the PSU efficiency
and the battery charging current should be set as follows:
* Grade 1, 2 - standby time 12h
Output voltage 4,1A + 1,5A 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
– EN 50131-1 standard).
Output voltage 2,16A + 3A 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
– EN 50131-1 standard).
Output voltage 1,08A + 3A battery charge
*** General use
– if the PSU is not mounted in an installation complaint with the EN-50131 standard, the
acceptable current efficiency amounts to:
1. Output voltage 5A + 0,6A battery charge
2. Output voltage 4,1A + 1,5A battery charge
3. Output voltage 3,4A + 2,2A battery charge
4. Output voltage 2,6A + 3A battery charge
Total current of the rec battery: 5,6A max.
In case of power decay, a battery back-up is activated immediately. The PSU is housed in a metal
enclosure (color: RAL 9005 - black) with battery space for a 65Ah/12V battery. It is fitted with micro switches
indicating unwanted door opening (front panel) and detachment from the mounting surface.
3.2 Block diagram.
The PSU is manufactured based on a high-duty system of DC/DC converter. The microprocessor system is
responsible for full diagnostics of the PSU and battery parameters.
Fig. 1. Block diagram of the PSU.
