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Frequency inverter (drive)Illustrative example

ABB ACS580

The drive trips on overcurrent (2310) immediately at start; the fault persists even when tested without a motor.

Duration: Same weekUpdated: 2026-07-07
Before

Faulty — board out of service

After

Repaired — tested under load

Fault

The drive trips on overcurrent (2310) immediately at start; the fault persists even when tested without a motor.

Analysis

The fault persisting in a no-motor test pointed to the drive output stage. A diode-test measurement found a phase-to-DC short in one IGBT arm.

Replacing the IGBT alone is not enough; without checking the gate-driver circuit that caused the short, the new module can fail too.

Repair Steps

  1. 1
    Fault confirmation

    All IGBT arms and body diodes measured with diode-test.

  2. 2
    Gate-driver check

    Gate resistors, opto-isolator and supply rails verified.

  3. 3
    Component replacement

    Faulty IGBT module and damaged driver-circuit parts replaced with original equivalents.

  4. 4
    Test under load

    Board verified under load with current and heat profile.

Changed Components

  • IGBT power module
  • Gate-driver gate resistors
  • Opto-isolator

Test Result

Run under load for 30 min; balanced current, normal heating. 2310 did not recur.

This is an illustrative repair flow that shows the process; no real customer/board information is shared.

Related Faults

ABB ACS580 — 2310 OvercurrentABB · ACS5802310

Related Topics

What Is a Drive Output Stage (IGBT)?The role of the power-switching stage that drives …How Is Board-Level Fault Diagnosis Done?The systematic diagnostic flow of a faulty board i…

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