Overcurrent on a VFD is usually bind, a ramp that is too proud, or motor data that does not match the nameplate. It is not a ground fault, and resetting it until the feeder opens is how plants lose a shift.
When a drive says overcurrent it is telling you phase current exceeded a threshold. That threshold might be a percentage of motor FLA you entered, a factory default that assumed a different motor, or a stall / short-ramp condition. A bound pump, a seized fan, a conveyor that is buried, or a coupling that is not turning will all look like “the VFD failed.” The millwright owns the bind. The electrician owns the measurement. Both belong on the job.
Accel and decel that were copied from the last identical-looking spare are a common self-inflicted OC. So is autotune skipped because “it ran on the bench.” Parameterize this motor. Enter FLA, voltage, frequency, and the real acceleration the process can stand. If current still spikes at a consistent speed, look at mechanical resonance, belt slap, or a valve that slams shut and turns the pump into a brick.
Do not confuse OC with ground fault. Residual current and phase current are different. If the last three trips flip between OC and GF, you likely have a mechanical problem and a damaged cable, not one failed inverter module. Read VFD ground fault next, then the free fundamentals course.
ForgeLine Academy’s Electrical path is 22 free courses, part of 44 free in a 78-course catalog. VFD Fundamentals & Parameterization is the plant-floor start for OC vs GF. Installation & Commissioning covers the cable and EMC that keep showing up as “random trips.” Motor starters and overloads still exist on across-the-line equipment; do not treat every motor as if it had a drive.
ForgeLine Academy currently lists 78 industrial maintenance courses. 44 of those are free (Mechanical and Electrical). Premium unlocks I&E (18) and Engineering (16). That is the whole catalog — not a 22-course teaser and not a four-hour overview of the plant. Call +1 580 421 5714 or email support@forgelineacademy.com for plant cohorts and on-site classes.
Training is educational. It does not replace your site's lockout/tagout, permits, PPE, or required licenses. Certificates of completion go in the file. They are not a license.