User Instructions

ManualsBrandsPulsar Manuals27PSB 27,6V/3,5A enclosed buffer switch mode power supply unit

PSB-1002435

PSB 27,6V/3,5A enclosed switch

mode buffer power supply

Edition: 6 z from 01.03.2018

Supercedes edition: 5 z from 20.06.2017

Features of the power supply:

 DC 27,6V/3,5A uninterruptible power supply*

 wide AC input voltage range 176÷264V

 high efficiency 83%

 controlling of battery charging and maintaining

 protecting of battery against excessive discharging

(UVP)

 battery charging current 0,5A/1A, changed by jumper

 additional accessories: automation module MPSB24

(technical outputs):

 EPS technical output indicating AC power loss

 PSU technical output indicating PSU failure

 LoB technical output indicating battery low

voltage

 battery output is full protected against short-

circuit and reverse connection

 LED optical signalisation

 protections:

 short-circuit protection SCP

 over voltage protection OVP

 surge protection

 overload protection OLP

 warranty – 2 year from the production date

1. Technical description.

1.1. General description.

Buffer-type power supply units are intended for continuous power supply to devices that require stabilised voltage

of 24V DC (+/-15%). The power supply provides a voltage of U=27,6V DC with an output current of:

1. Output current of 3A + 0,5A battery charging*.

2. Output current of 2,5A + 1A battery charging*.

Total device current + battery: 3,5A max.

In case of power voltage decay, prompt switching to battery supply occurs. The power supply unit is protected

against a short circuit, an overload, a surge or over voltage protection.

1.2. Technical parameters.

Supply voltage

176÷264V AC

Current consumption

0,90A@230VAC max.

Supply power

100W max.

Efficiency

83%

Output voltage

22V÷ 27,6V DC – buffer operation

19V÷ 27,6V DC – battery operation

Output current t

AMB

<30°C

3A + 0,5A battery charging - see chart 1

2,5A + 1A battery charging - see chart 1

Output current t

AMB

=40°C

2A + 0,5A battery charging - see chart 1

1,5A + 1A battery charging - see chart 1

Voltage adjustment range

24÷28V DC

Ripple voltage

150mV p-p max.

Battery charging current

0,5A or 1A max

Short-circuit protection SCP

electronic

Overload protection (battery) OLP

glass fuse

Surge protection

varistors

Overvoltage protection OVP

>32V (automatic recovery)

Excessive discharge protection UVP

U<19V (± 5%) – disconnection of battery

Optical signalisation

green LED- presence of AC voltage

See chart 1

Summary of content (4 pages)

PAGE 1
PSB-1002435 PSB 27,6V/3,5A enclosed switch mode buffer power supply Edition: 6 z from 01.03.2018 Supercedes edition: 5 z from 20.06.
PAGE 2
Output of optical signalization Additional accessories Operation conditions Dimensions Net/gross weight Protection class EN 60950-1:2007 Connectors Electrical strength of insulation: - between input (network) circuit and output circuits of power-supply (I/P-O/P) - between input circuit and PE protection circuit (I/PFG) - between output circuit and PE protection circuit (O/P-FG) Insulation resistance: - between input circuit and output or protection circuit Storage temperature Vibrations and impulse waves d
PAGE 3
The circuit of the shock protection shall be performed with a particular care, i.e. the yellow and green protection wire of the power cable shall be connected from one side to the terminal marked by the symbol of in the casing of the power-supply. Operation of the power-supply without the properly made and fully operational circuit of the shock protection is UNACCEPTABLE! It can result in failure of devices and electric shock. 4.
PAGE 4
3. Cooperation with the MPSB24 automation module (option). The MPSB24 automation module is intended for indicating the operating status of buffer power supplies, PSB 27,6V type. The PCB board features LEDs that indicate PSU operating status (presence of AC voltage, presence of DC voltage, battery voltage). The module is also equipped with technical outputs of: EPS - AC power loss, PSU - PSU failure, LoB - low battery voltage. Element no.