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PSBEN5024C/LCD
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2. Technical description.
2.1. General description.
A buffer PSU is intended for an uninterrupted supply to alarm system devices requiring stabilized voltage of
24V/DC (+/-15%). The PSU provides voltage of 27,6V DC with current efficiency of:
1. Output current 5A + 0,6A battery charge
2. Output current 4,1A + 1,5A battery charge
3. Output current 3,4A + 2,2A battery charge
4. Output current 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 (colour: RAL 9005 - black) which can accommodate a 2x17Ah/12V battery. It features a micro switch that
indicates unwanted door opening (faceplate) and detaching from the mounting surface.
2.2. Block diagram.
The PSU has been manufactured based on a high-duty system of DC/DC converter. It features a
microprocessor-based operation control, responsible for full diagnostics of the PSU and battery parameters.
Fig. 1. Block diagram of the PSU.
