Operating instructions

www.pulsar.pl EN54-3A28 RED POWER

6.9. PSU overload.

The PSU is fitted with the LED OVL (overload) on the PCB and indicator on the LED panel,

informing about output overload. If the nominal current of the PSU is exceeded, the led turns on and the

microprocessor starts a specially implemented procedure. Depending on time and overload level,

microprocessor may disconnect the AUX1 and AUX2 outputs and switch into the battery-assisted operation.

Restart will occur after 1 minute.

PSU overload is indicated by the PSU FLT and ALARM technical outputs.

6.10. Indication of exceeding Imax a current.

Exceeding the "Imax a" output current during the power supply operation is indicated by the

microprocessor using the LED OVL light (overload) on the PCB and LED indicator light on the LED panel

of the power supply after 30 seconds.

Information about exceeding the „Imax a” current is stored in the history of events. Battery charge current is

limited in order to protect the power supply against overload.

6.11. Short-circuit of the PSU output.

In case of short-circuit of the AUX1 or AUX2 output, one of the fuses - F

AUX1

or F

AUX2

– becomes

permanently blown. The restoration of the voltage at the output requires the replacement of the fuse