Cause : Overcurrent comes when the current flowing through the drive has exceeded a preset threshold. Frequency converter has detected too high a current (>4*I N ) in the motor cable:
- sudden heavy load increase
- short circuit in motor cables
- unsuitable motor
This could be due to various reasons such as:
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Overloading of the motor: If the load on the motor connected to the drive is too high, it can cause the drive to draw more current than it's rated for, triggering an overcurrent fault.
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Short circuit: A short circuit in the motor or the wiring can cause a sudden surge in current, leading to an overcurrent fault.
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Faulty components: Internal faults within the drive such as damaged power semiconductors or malfunctioning control circuits can also cause overcurrent faults.
To resolve an overcurrent fault in a Vacon 10 drive, you should:
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Check the load: Ensure that the motor is not overloaded and that the mechanical system is functioning properly.
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Inspect the wiring: Look for any signs of damage or short circuits in the motor and power wiring.
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Check for loose connections: Loose connections can increase resistance and cause higher currents. Make sure all connections are secure.
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Reset the drive: Many drives have a reset function to clear fault codes. Refer to the user manual for instructions on how to reset the drive.
