Why does my VFD fault on overcurrent when the motor starts?
A VFD overcurrent fault at startup usually means the motor draws more current than the drive's limit, often due to excessive acceleration…
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Industrial Equipment & Machinery
Practical, step-by-step fixes for industrial equipment & machinery problems — 55 published so far.
Why does my VFD fault on overvoltage during deceleration?
Your VFD faults on overvoltage during deceleration because the motor acts as a generator, pumping energy back into the DC bus faster…
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Why does my VFD show an overcurrent fault at startup but run fine after reset
An overcurrent fault at startup usually means the VFD's acceleration ramp is too short for the motor's inertia, causing a current spike…
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Why does my VFD show ground fault error on startup
A VFD ground fault on startup usually means insulation breakdown in the motor windings or cables, moisture in the conduit, or a…
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Why does my VFD show overcurrent fault at startup
A VFD overcurrent fault at startup usually means the motor is drawing too much inrush current because the acceleration ramp is too…
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Why does my VFD show overcurrent fault at startup but runs fine after reset?
A VFD overcurrent fault at startup usually means the motor draws excessive inrush current during acceleration, often caused by too-short acceleration time,…
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Why does my VFD show overcurrent fault at startup only
A VFD overcurrent fault at startup usually means the motor's inrush current exceeds the drive's limit, often caused by too-short acceleration ramps,…
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Why does my VFD show overcurrent fault on startup
A VFD overcurrent fault on startup usually means the motor draws too much inrush current, the acceleration ramp is too short, or…
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Why does my VFD trip on ground fault only during motor startup
A VFD that trips on ground fault only during startup usually indicates insulation breakdown in the motor windings or cables that only…
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Why does my VFD trip on overcurrent fault during motor acceleration
A VFD trips on overcurrent during acceleration when the motor draws more current than the drive's limit, usually caused by too-short acceleration…
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Why does my VFD trip on overcurrent fault during motor startup?
A VFD trips on overcurrent at startup usually because the motor draws excessive inrush current, the acceleration ramp is too short, or…
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Why does my VFD trip on overvoltage when the motor decelerates?
A VFD trips on overvoltage during deceleration because the motor acts as a generator, pushing energy back into the DC bus faster…
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