Inovance 5-1 fault code meaning
Inovance / 5-1
Series: MD580
High DC bus voltage
AC drive
Meaning: Fault category: DC overvoltage; Default level: Coast to stop; Reset method: Manual reset
Possible causes
- High DC bus voltage
- Incorrect DC bus overvoltage threshold setting
- Regenerative operation with no braking unit installed or an unsuitable braking resistor selected
- Incorrect drive voltage class selection
- Incorrect drive model setting
- Incorrect overvoltage suppression parameter settings
- DC bus voltage correction factor setting is inappropriate
Source: Inovance Official Function Manual 19011555 A00 P448
Series: MD580S
High DC bus voltage
AC drive
Meaning:
Possible causes
- High DC bus voltage
- Incorrect DC bus overvoltage threshold setting
- Regenerative operation with no braking unit installed or an unsuitable braking resistor selected
- Incorrect drive voltage class selection
- Incorrect drive model setting
- Incorrect overvoltage suppression parameter settings
- DC bus voltage correction factor setting is inappropriate
- The control mode is FVC or SVC, and the speed loop parameters are inappropriate.
- Output ground fault
- The control mode is FVC or SVC, and sudden load removal causes speed overshoot and regenerative operation.
- When the control mode is FVC or SVC, the speed loop parameters are too weak, causing the feedback speed to overshoot and the motor to regenerate when the speed reference reaches the target value.
- When the control mode is FVC or SVC, the speed loop parameters are too strong, causing speed overshoot.
- Direct start while the motor is still rotating
- When the control mode is V/f, oscillation causes overvoltage.
- Deceleration time too short
- Model parameter setting error
- Braking unit activation voltage setting too high
- A fault is triggered or a manual coast stop is initiated after synchronous motor overspeed
- Control mode is FVC, and encoder parameter settings are inappropriate
- Control mode is FVC, and encoder wiring has an error
- Control mode is FVC, and the encoder-related parameters have not been identified
- Control mode is FVC, and there is a problem with encoder installation
- Control mode is FVC, and the synchronous motor position changes after stop
- Other causes
Source: MD580S Series Low-Voltage High-Performance Engineering AC Drive Function Manual P415
Series: MD880
DC overvoltage
AC drive
Meaning:
Possible causes
- The DC bus voltage is high.
- The DC bus overvoltage threshold setting is inappropriate.
- The braking unit activation voltage setting is too high.
- Regenerative operation occurs, but no braking unit is installed or the braking resistor is incorrectly selected.
- The selected drive voltage rating is incorrect.
- The drive model setting is incorrect.
- Incorrect overvoltage suppression parameter settings.
- The DC bus voltage correction factor setting is inappropriate.
- Incorrect speed loop parameter settings in vector control.
- Starting the motor directly while it is still rotating causes it to generate power, resulting in DC bus overvoltage.
- Ground fault.
- Other issues.
Source: MD880 Series AC Drive Function Manual (HCU) P601
Series: MD880-61
High DC bus voltage
braking unit
Meaning:
Possible causes
Source: MD880-61 Series Single-Phase Braking Unit Parameter Manual P48