PSBS5012E
BLUE POWER
10
4. Service and operation.
4.1 Overload or short-circuit of the power supply output (SCP activation).
The AUX output of the PSU is protected against short-circuit by
PTC polymer fuse. If the power supply load
current exceeds Imax. (110% ÷ 150% @ 25°C of the PSU power), automatic disconnection of the output voltage,
indicated by switching off the green LED, takes place. To restore the voltage at the output, disconnect the load
from the power supply output for approximately 1 minute.
In case of a short-circuit at the AUX, BAT output or reverse battery connection, the F
BAT
fuse in the battery
circuit becomes permanently damaged. The voltage restoration at the BAT output requires fuse replacement.
4.2 Running the PSU from the battery.
The power supply is equipped with the button on the PCB allowing to run the PSU from the battery, when
needed. To do that, press and hold the
START
button on the unit board for 1 second.
4.3 Deep discharge battery protection UVP.
The power supply is equipped with deep discharge battery protection (UVP). If the voltage at the battery
terminals drops below 1
0V±0.5V during battery-assisted operation, the batteries will be disconnected.
The battery
protection is on when the P
BAT
jumper is off.
Caution.
It is not recommended to disable UVP since deep discharge of the batteries reduces their ability to
store energy, their capacity and lifetime.
4.4 Maintenance.
All maintenance procedures can be performed after disconnecting the power supply from the power
network. The PSU does not require any specific maintenance; however, its interior should be cleaned with
compressed air if used in dusty conditions. In case of fuse replacement, use only compatible replacement parts.
