Inovance 9-1 fault code meaning
Inovance / 9-1
Series: MD580
Low DC bus voltage
AC drive
Meaning: Fault category: DC undervoltage; Default level: Coast to stop; Reset method: Manual reset
Possible causes
- Low DC bus voltage
- Improper DC bus undervoltage threshold setting
- Incorrect drive voltage class selection
- Incorrect drive model setting
- Improper undervoltage suppression parameter settings
- DC bus voltage correction factor setting is inappropriate
Source: Inovance Official Function Manual 19011555 A00 P449
Series: MD580S
Low DC bus voltage
AC drive
Meaning:
Possible causes
- Low DC bus voltage
- Improper DC bus undervoltage threshold setting
- Incorrect drive voltage class selection
- Incorrect drive model setting
- Improper undervoltage suppression parameter settings
- DC bus voltage correction factor setting is inappropriate
- Soft-charge resistor, driver board, or control board error
- Undervoltage caused by oscillation during motor operation
- Soft-charge contactor error; soft-charge resistor cannot be bypassed normally
- Hardware error
- DC bus voltage display error
Source: MD580S Series Low-Voltage High-Performance Engineering AC Drive Function Manual P418
Series: MD880
DC undervoltage
AC drive
Meaning:
Possible causes
- Input voltage error.
- The DC bus undervoltage threshold setting is inappropriate.
- The selected drive voltage class is incorrect. Check the rated voltage of the A2-02 module.
- The undervoltage suppression function is enabled, but the parameter settings are inappropriate.
- DC bus voltage display error.
- The soft-charge resistor has not been bypassed.
- Other causes.
Source: MD880 Series AC Drive Function Manual (HCU) P602