Operating displays of the 7-segment display on the MDR9.B.. power supply module

Displays of different device states

Display

Description

State

Remark/action

00 (flashing)

Device ready

Ready without user selection

VDCL < 80 V

Displays in normal operation

Display

Description

State

Remark/action

cp (flashing)

Precharge inhibit

Precharge inhibit is active.

 

dC/hi (alternating)

Dangerous high voltage in the DC link

Ready without user selection.

Line contactor open

VDCL > 80 V

C5 (flashing)

Control technology not ready

Control technology not ready

Display appears only very briefly.

51

Output stage inhibit

For further information, refer to the description of the FCBs.

If no FCB is activated, then FCB 51 is active and the output stage is inhibited.

53

Hold precharge

If you activate this FCB, the DC link will be precharged and the line contactor will be closed.

58

Supply and regenerative mode

If you activate this FCB, the default regenerative function of the device will be activated.

53 or 58
flashing

Grid not OK

Power off has been detected.