ABB ACS880 Fault 2310 Overcurrent — What It Means
The ABB ACS880 Fault 2310 is an Overcurrent fault — the drive’s output current has exceeded the instantaneous overcurrent trip level (typically 2× the drive’s rated current). The ACS880 shuts down immediately to protect its IGBTs from a shoot-through event. Fault 2310 is a hard, fast-trip protection; it is not the same as the thermal overload (Fault 2310 OL). The fault appears in the drive’s fault log with a timestamp, and the sub-code in the fault data narrows down which phase tripped.
Common Causes
- Motor output short circuit — A phase-to-phase or phase-to-ground short in the motor winding or output cable causes a current spike that instantly exceeds the 2310 threshold.
- Acceleration ramp too fast — Accelerating a high-inertia load too quickly demands peak current that exceeds the drive’s trip level.
- Motor insulation breakdown — Aged motor insulation fails at the moment of startup (high dV/dt stress from the drive’s PWM switching), causing a momentary short and 2310 trip.
- Mechanical jam at startup — A seized or jammed load at startup demands near-locked-rotor current, which can exceed 2× FLA on a properly sized drive.
Step-by-Step Fix {#fix}
- Check for an output short circuit — Power off, lock out. Disconnect the motor from the drive output terminals. Measure phase-to-phase and phase-to-ground resistance on the motor cable and on the motor terminals. Any low-resistance ground reading = winding or cable fault.
- Identify the sub-code — Read the fault log (parameter group 08) and note the sub-code with fault 2310. Sub-code 1 = U phase, 2 = V phase, 3 = W phase. This narrows whether it’s a specific winding issue.
- Extend the acceleration ramp — In parameter 23.12 (Acceleration Time 1), increase the ramp time by 50% and test. If 2310 clears with a longer ramp, the original ramp was too aggressive for the load inertia.
- Megohm test the motor — After clearing the output cable, megohm test the motor windings at 1000V. Any reading below 1 MΩ indicates degraded insulation that will cause intermittent 2310 faults.
- Reset and test with no load — Reconnect motor, reset fault (parameter 96.09 = 1 or use the panel), and test the drive with motor decoupled from load. If 2310 trips with no mechanical load, the motor has a winding fault.
Parts Often Needed
| Part | Notes |
|---|---|
| Motor (replacement) | Amazon | Replace when megohm test shows degraded insulation |
| Output motor cable | Amazon | Replace if cable insulation has failed; use VFD-rated cable |
| ACS880 IGBT module | Amazon | Replace only after confirming the fault was caused by an external short that damaged internal semiconductors |
When to Call a Pro
If 2310 trips with no load connected and the motor tests clean, the ACS880’s current sensing circuit or IGBT module may have been damaged by a prior short circuit event. ABB-certified drive technicians should perform IGBT gate signal testing and bus capacitor verification.