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DSOP24V
30
- Press the "OK" button - the calibration procedure is started
-
To return to the main menu, simultaneously press the „<,>” rightmost
and leftmost buttons
The measurement of the resistance of the battery circuit is performed during the calibration process. The
resistance cannot
exceed 60 mΩ. If the resistance exceeds the permissible value, make sure that the wires are
properly connected to the batteries and whether the batteries are not discharged. After proper calibration of the
power supply, the controller stores the resistance measurements as reference values.
During normal operation, the PSU performs the battery test (accompanied by, among others, the
measurement of resistance increase in the battery circuit) every 5 minutes. If the resistance increase exceeds 60
mΩ the power supply will report a failure at the APS and ALARM technical outputs.
6.3. Battery Detection.
The power supply driver checks the voltage at the terminals and, depending on its value, responds
appropriately:
U
BAT
below 20V - faulty batteries, automatic disconnection from power supply circuits
U
BAT
above 20V - battery OK, automatic connection to power supply circuits
6.4. Protection against the battery terminals short-circuit.
The PSU is fitted with a circuit protecting against the battery terminals short-circuit. In the event of a short
circuit, the control circuit immediately disconnects the batteries from the power supply so that there is no voltage
drop at the outputs. Automatic reconnecting the batteries to the power supply circuits is possible once the short
circuit is removed and cables are properly connected.
Caution! If the system uses two battery strings and the second string was connected during the short
circuit, then the fuse in its circuit will be damaged.
6.5. Under-voltage protection (UVP).
The PSU is equipped with the discharged battery disconnection and indication system. During the battery-
assisted operation, reducing voltage below 20V±0.2V at the battery terminals will disconnect the battery within 15
seconds and turn on acoustic indication.
Re-connecting the battery to the power supply occurs automatically once the 230V mains voltage is restored.
6.6. Battery temperature measurement.
The power supply unit is fitted with a temperature sensor to monitor the temperature parameters of the
installed battery. The sensor is located near the battery so its readings should not be confused with the ambient
temperature. The measurement of the battery temperature and the charging voltage compensation extend the
battery life.