F30027 Power unit: Precharging DC link time monitoring

Drive object: All objects

Reaction: OFF2

Acknowledge: IMMEDIATELY

Cause: The power unit DC link was not able to be pre-charged within the expected time.

- line supply voltage too low.

- line supply phase fault.

- short-circuit or ground fault in the DC link.

- pre-charging circuit defective.

Fault value (r0949):

Missing internal enable signals, power unit (lower 16 bit):

(Inverted bit-coded notation FFFF hex -> all internal enable signals available)

Bit 0: Power supply of the IGBT gating shut down

Bit 1: Reserved

Bit 2: Reserved

Bit 3: Ground fault detected

Bit 4: Peak current intervention

Bit 5: I2t exceeded

Bit 6. Thermal model overtemperature calculated

Bit 7: (heatsink, gating module, power unit) overtemperature measured

Bit 8: Reserved

Bit 9: Overvoltage detected

Bit 10: Power unit has completed pre-charging, ready for pulse enable

Bit 11: STO terminal missing

Bit 12: Overcurrent detected

Bit 13: Armature short-circuit active

Bit 14: DRIVE-CLiQ fault active

Bit 15: Uce fault detected, transistor de-saturated due to overcurrent/circuit-circuit

Status, power unit (upper 16 bit, hexadecimal number):

0: Fault status (wait for OFF and fault acknowledgement)

1: Restart inhibit (wait for OFF)

2: Overvoltage condition detected -> change into the fault state

3: Undervoltage condition detected -> change into the fault state

4: Wait for bypass contactor to open -> change into the fault state

5: Wait for bypass contactor to open -> change into restart inhibit

6: Commissioning

7: Ready for pre-charging

8: Pre-charging started, DC link voltage lower than the minimum switch-on voltage

9: Pre-charging, DC link voltage end of pre-charging still not detected

10: Wait for the end of the de-bounce time of the main contactor after pre-charging has been completed

11: Pre-charging completed, ready for pulse enable

12: It was detected that the STO terminal was energized at the power unit

See also: p0210 (Drive unit line supply voltage)

Remedy: - check the line supply voltage

- check the line supply.

- line contactor was closed during the DC link fast discharge by the braking module, the pre-charging resistor must

cool down, check the interconnection of the external line contactor.

See also: p0210 (Drive unit line supply voltage)