User Instructions

www.pulsar.pl DINB27620
2
PSU features:
 DC 27,6V/2A uninterrupted supply + 0,2A battery
charging current
 universal supply voltage range AC 90÷264V
 high efficiency 88%
 battery charging and maintenance control
 deep discharge battery protection (UVP)
 battery output protection against short circuit and
reverse polarity connection
 DIN rail mounting
 LED optical indication
 protection type:
 short-circuit protection SCP
 surge protection
 overload protection OLP
 warranty – 2 years from the production date
TABLE OF CONTENTS:
1. Technical description.
1.1 General description
1.2 Block diagram
1.3 Description of components and power supply connectors
1.4 Technical parameters
2. Installation.
2.1 Requirements
2.2 Installation procedure
3. Power supply operation indication.
3.1 Optical indication
4. Service and operation.
4.1 Overload or short circuit of the power supply output (SCP activation)
4.2 Deep discharge battery protection UVP
4.3 Maintenance
1. Technical description.
1.1 General description.
The buffer power supply is designed for uninterrupted supply of devices requiring stabilized voltage of 24V
DC (+/-15%). The PSU supplies voltage of 27,6V DC with current efficiency of I = 2A + 0,2A battery charging. In
the case of mains power failure, the unit will instantly switch to battery power. The PSU is fitted with short circuit
protection and overload protection. The power supply unit is in plastic enclosure designed for DIN TH35 rail
mounting (35mm width).
During normal operation, the total current drawn by the device cannot exceed I=2A. The maximum
battery charging current is 0,2A. The total current of the receivers + battery is max. 2,2A.
1.2 Block diagram.
Fig.1. Block diagram of the PSU.