Drive having mains over voltage OSF fault but mains voltage is under control 450 only also having motor current higher than the rated current. Help pl

Karan314 · ‎2024-08-23

kindly help me regarding this issue

Manon_Chaboud · ‎2024-09-18

It sounds like you might be encountering issues with the drive and motor operation. Here are a few steps you can consider to troubleshoot the situation:

Check Mains Voltage Fluctuations: Even if the mains voltage appears to be under control at 450V, there might be transient voltage spikes or fluctuations that could trigger the overvoltage fault. It's essential to monitor the voltage stability over time, especially during start-up and operation.
Motor Current Analysis: The higher-than-rated motor current could indicate an issue with the load, mechanical binding, or an inefficient motor. It's important to analyze the motor's mechanical condition, load characteristics, and the possibility of any process-related changes causing increased current draw.
Drive Parameter Settings: Review the drive's parameter settings to ensure that they are correctly configured for the motor and application requirements. Check if there are any recent changes in the drive parameters that might have led to these issues.
Drive Fault Logging: Access the drive's fault logging or diagnostic features to gather more detailed information about the overvoltage fault and the increased motor current. This can provide valuable insights into the specific conditions triggering the faults.
Consult Manufacturer's Documentation: Refer to the drive's user manual, technical documentation, or contact the manufacturer's support for specific guidance on addressing overvoltage faults and abnormal motor current.

See Answer In Context

Manon_Chaboud · ‎2024-09-18

Hello @Karan314 !

It sounds like you might be encountering issues with the drive and motor operation. Here are a few steps you can consider to troubleshoot the situation:

Check Mains Voltage Fluctuations: Even if the mains voltage appears to be under control at 450V, there might be transient voltage spikes or fluctuations that could trigger the overvoltage fault. It's essential to monitor the voltage stability over time, especially during start-up and operation.
Motor Current Analysis: The higher-than-rated motor current could indicate an issue with the load, mechanical binding, or an inefficient motor. It's important to analyze the motor's mechanical condition, load characteristics, and the possibility of any process-related changes causing increased current draw.
Drive Parameter Settings: Review the drive's parameter settings to ensure that they are correctly configured for the motor and application requirements. Check if there are any recent changes in the drive parameters that might have led to these issues.
Drive Fault Logging: Access the drive's fault logging or diagnostic features to gather more detailed information about the overvoltage fault and the increased motor current. This can provide valuable insights into the specific conditions triggering the faults.
Consult Manufacturer's Documentation: Refer to the drive's user manual, technical documentation, or contact the manufacturer's support for specific guidance on addressing overvoltage faults and abnormal motor current.