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PSBS10A12D
9
Fig. 4. Electrical diagram of the OC outputs.
4. Operation and use.
4.1 Overload or short circuit of the PSU output
The output circuit of the PSU is equipped with the electronic current protection. If the output voltage value
exceeds the acceptable threshold – Imax, the PSU output will be disconnected. The disconnection will be indicated
by the O1, O2, O3 and AUX diodes going out. Reactivation of the voltage will be automatic after disconnecting the
receivers from the output.
Additionally, the AUX1, AUX2, AUX3 outputs are protected separately, with the use of PTC polyswitches. If
the load exceeds 2,5A, there will be an automatic disconnection of the output voltage indicated by the O1, O2 or
O3 green diode going out. Restoring of the output voltage requires cutting off the output load for at least 1 minute.
In case of a short circuit at the AUX, BAT output (load: 200% ÷ 250% of the PSU power) or reverse battery
connection, the F
BAT
fuse 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.
In case of the main power outage, the device is immediately switched into a battery-assisted operation.
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 is equipped with the discharged battery disconnection system (UVP), configured by
the P
BAT
jumper. The protection mode is off when the P
BAT
jumper is removed.
4.3 Maintenance
Any and all maintenance operations may be performed following the disconnection of the PSU from the
power supply network. The PSU does not require performing any specific maintenance measures. However, in
case of dust, clean the interior with compressed air. In case of fuse replacement, use a replacement of the same
parameters.
