The ACS580 trips a ground fault at start or during run, halting the motor, with the drive reporting a ground-current imbalance.
What we most often see on the ABB ACS580 for a ground fault condition breaks down like this: Likelihood is based on what our specialists see in the field; the First Check is the fastest thing to try before sharing logs.
| Cause | Likelihood | First Check |
|---|---|---|
| Motor or cable insulation breakdown to ground | High | Measure motor and cable insulation to ground with a megger and compare to spec |
| Moisture or contamination in the terminal box | Medium | Inspect the motor and drive terminals for dampness, dust or carbon tracking |
| Wrong ground-fault setting for the cable length | Medium | Check the drive's ground-fault sensitivity vs the motor cable length |
| DC-link or output-phase hardware fault | Low | Note if the fault appears with the motor disconnected (points to the drive) |
Work through these in order. Each step is something you can perform and report back on without opening the enclosure or swapping parts.
Note whether the ground fault appears at power-on, at start, or after running. A fault with the motor disconnected localizes the problem to the drive itself.
With the drive isolated, measure insulation from each phase to ground. A reading below the motor's spec is a real ground path the drive is correctly detecting.
Open the motor and drive terminal boxes and look for moisture, dust bridging, or carbon tracking. A clean, dry terminal often clears an intermittent ground fault.
Review the drive's ground-fault sensitivity and confirm it suits the cable length. A too-sensitive setting can nuisance-trip on long cables without a real fault.
After the insulation is good and the setting suits the cable, re-run from a low speed. A clean run means the cause was environment or setting, not the drive.
An ACS580 ground fault is an insulation issue in the motor or cable in most cases, not a drive failure. A megger reading and a fault-with-motor-disconnected test tell us exactly where the path is. Cross-reference the broader collections: Ground / insulation fault · VFD & motor control.
Video: "Troubleshoot ABB VFD earth fault — ACS580 2330 Fault" by E&I DOST — embedded from YouTube; loads only after you click.
Usually not. If the fault clears with the motor disconnected, the drive is fine and the motor or cable is the path. We confirm with the megger.
No. The GF protection prevents a fire and protects the output stage. We find the path; we do not turn the protection off.
Sometimes a long cable nuisance-trips a too-sensitive setting. We check the setting before blaming the motor.
Send us the error code, a photo of the screen and what you already tried — an independent specialist reviews your case and replies with an evaluation, typically within 24 hours.
Submit Your CaseSend the megger reading and the fault timing. We separate motor, cable and setting faults remotely so you avoid swapping a healthy drive.
Submit Your Case Connect With SpecialistsWe do not perform hardware repair, we do not replace parts, and we cannot promise a 100% resolution. Our role is limited to remote diagnostic and step-by-step guidance based on the information, photos and logs you share.
Before changing drive parameters or replacing parts, verify against the official documentation from ABB:
Tip: for simple issues, a general-purpose AI assistant can help you interpret a fault code — but always cross-check any corrective action against the official manual before applying it.
A similar VFD current fault on another brand.
A VFD start fault with a different remote path.
Full pumps, motors & drives troubleshooting collection.