FCB 53 Hold precharge

If you activate this FCB, the DC link will be precharged and the line contactor will be closed. The DC link voltage is not controlled, no ready signal is sent to the connected axes, and the output stage is inhibited. If you switch between FCB 58 and FCB 53 during standard inverter operation, the output stage is inhibited.

Priority of FCB 53: 3

Function/action

Response

Precharging

Is performed

Line contactor

Is closed

Supply function

Enabled

Regenerative function

Inhibited

Signal to axes

Not ready

MDR90B-..: DC link voltage

Rectification

MDR91B-..: DC link voltage

Rectification

Control of braking resistor

Enabled