Pulsar MSRK 3512, Manual, Page: 5 / 8

www.pulsar.pl MSRK3512
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2. Installation.
2.1 Requirements.
The buffer PSU module is to be mounted by a qualified installer, holding relevant permits and licenses
(applicable and required for a given country) for 230V/AC and low-voltage installations. The unit should be
mounted in confined spaces, in accordance with the II-nd environmental class, with normal relative humidity
(RH=90% maximum, without condensing) and temperature from -10°C to +40°C. The PSU module shall work in a
vertical position that guarantees sufficient convectional air-flow through ventilating holes of the enclosure.
1. Output current 3,0A + 0,5A battery charge
2. Output current 2,5A + 1A battery charge
Total device c battery: 3,5A max.
As the PSU module is designed for a continuous operation and is not equipped with a power-switch,
therefore an appropriate overload protection shall be guaranteed in the power supply circuit. Moreover, the user
shall be informed about the method of unplugging (most frequently through separating and assigning an
appropriate fuse in the fuse-box). The electrical system shall follow valid standards and regulations.
The device should be installed in the metallic enclosure (cabinet). In order to meet the UE requirements, the
rules concerning: supply, development and shielding ought to be followed- accordingly to the application. The
module requires 20-22V AC power supply with galvanic separation (transformer insulation).
2.2 Installation procedure.
1. Install the enclosure or cabinet and lead the cables through the cable ducts.
2. Install the PSU module on mounting pins (the mounting pins should be installed before the assembly of the
enclosure/cabinet)
3. Deliver the AC voltage to the ~AC~ terminals.
4. Connect the receivers’ cables to the +AUX, -AUX terminals of the terminal box on the PSU board.
5. If necessary, connect the device conductors to the technical outputs:
- FAC; AC status indication (alarm panel, controller, indicator, LED, etc.)
- FPS; PSU operation status
6. Using the I
BAT
pins, determine the maximum battery charging current the should be determine, in accordance
with battery parameters.
7. Using the P
BAT
pins, determine whether the function of disconnecting the discharged battery U<10V (+/-5%) is to
be on or off. The battery protection is on if the P
BAT
jumper is removed.
8. Activate the ~230V/AC supply (the AC red diode and AUX diode should be permanently illuminated)
9. Check the output voltage (the PSU voltage without load should amount to 13,6 V÷ 13,9 V, during battery
charging 11 V÷ 13,8 V). If the value of the voltage requires adjustment, it should be set by the V
ADJ
potentiometer,
monitoring the voltage at the AUX output of the PSU module.
10. Connect the battery in accordance with the signs: +BAT red to ‘plus’, -BAT black to ‘minus’, (the LB diode light
should fade throughout the time of charging).
11. Once the tests and control operation have been completed, close the enclosure/cabinet.
3. Operating status indication.
3.1. LED indication
The PSU module is equipped with three diodes indicating operating status: AC, LB, AUX.

AC- red diode : under normal status (AC supply) the diode is permanently illuminated. The absence of AC
supply is indicated by the AC diode going off.
 LB- red diode : indicates the battery charging process; the intensity of illumination is dependent on the
charging current.

AUX - green diode : indicates the DC supply status in the output of the PSU module. Under normal status,
the diode is permanently illuminated and in case of a short-circuit or overload, the diode goes off.
3.2. Technical outputs
The PSU module is equipped with indication outputs:

FAC - absence of AC supply output : - OC type indicates the loss of AC supply. In a normal status - with
the 230V supply, the AC output is fault to ground (status L – 0V). In case of power loss, the PSU output is
switched into high impedance state –hi-Z after 10 sec.