Pulsar MSRK 3512, Manual, Page: 6 / 8

www.pulsar.pl MSRK3512
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FPS - technical output of the power supply : OC type indicates the PSU failure. In a normal status (under
proper operation), the output is fault to ground (status L – 0V), in case of incorrect operation parameters
(voltage, current, temperature) the output is switched into hi-Z - high impedance state.
Fig. 3. Electrical diagram of OC outputs.
4. Operation and use.
4.1 Overload or short circuit of the PSU module output
The AUX output of the PSU module is equipped with the PTC polymer fuse assisted protection. If the load
of the PSU module exceeds I
max
(load 110% ÷ 150% @25ºC of the PSU module power), the output voltage is
automatically cut off and indicated by the green diode going off. To restore the output power, cut off the output load
for approximately 1 minute.
In case of of the short-circuit to the AUX, BAT output, (load 200% ÷ 250% of the PSU module power) or
incorrect connection of the battery, the fuse F
BAT
in the battery circuit becomes permanently damaged and the
restoration of the voltage at the BAT output requires the replacement of the fuse.
4.2 Battery – assisted operation
Immediate battery reverting in case of main power outage.
In order to run the PSU from the battery only, connect the BAT connectors in accordance with the signs:
+ BAT red to ‘plus’ and, - BAT black to 'minus’ then press the START button on the main board and hold it for 5
seconds.
The PSU module is equipped with the discharged battery disconnection system (UVP),
configured through the P
BAT
pins. The battery protection is on after removing the P
BAT
jumper.
4.3 Maintenance
Any and all maintenance operations may be performed following the disconnection of the PSU module
from the power supply network. The PSU module does not require performing any specific maintenance
measures, however, in the case of significant dust rate, its interior is recommended to be cleaned with compressed
air. In case of fuse replacement, use a replacement of the same parameters.