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SCHNEIDER ELECTRIC VFD REPAIR & REFURBISHMENT

Schneider Altivar ATV312 repair and refurbishment.

Component-level repair and refurbishment for the Altivar ATV312. Bench diagnostics, engineer-led, tested before return.

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Overview

Altivar ATV312 repair and refurbishment

The Altivar ATV312 is a compact general-purpose drive widely installed on conveyors, mixers, and general machinery across UK manufacturing. Age-related component wear is the primary driver of failure.

Expertise

Common Altivar ATV312 faults we fix

  • IGBT inverter bridge failure — a common ATV312 fault causing OCA (output overcurrent) or SCF (motor short circuit) alarms

  • DC bus electrolytic capacitor degradation after extended service — causing USF (undervoltage) alarms or reduced braking performance

  • Rectifier bridge faults presenting as PHF (phase loss) or CrF (pre-charge circuit) fault codes

  • Control card faults causing parameter loss, communication errors, or loss of analogue reference input function

Process

How it works

  1. 1

    Send details

    Share the drive model, fault symptoms, and any photos or error codes.

  2. 2

    Diagnostics

    Bench diagnostics isolate the fault and scope the repair.

  3. 3

    Repair, Refurbish & Test

    Component-level repair and thorough refurbishment with outcomes tested before return.

  4. 4

    Return to service

    Confirmed results and return logistics for your drive.

Why Electron Lab

Why Electron Lab

  • Engineer-led bench diagnostics
  • Component-level repair and rework
  • Tested Before Return
  • Clear, fast quoting
FAQ

Altivar ATV312 repair FAQs

My ATV312 shows an OCA fault — does this mean the IGBTs have failed?

OCA (output overcurrent) can indicate IGBT failure, but it can also be caused by a wiring fault or motor issue. We carry out a bench diagnostic to confirm the fault is in the drive before quoting a repair.

My ATV312 is showing a CrF fault — what does this mean?

CrF indicates a fault in the pre-charge circuit, which is typically caused by a failed pre-charge resistor or relay. We diagnose and replace the affected component during the bench repair.

Do you repair ATV312 drives that are out of production?

Yes. The ATV312 is discontinued but compatible components are available. We check parts availability before confirming the scope of work.

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