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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

EPF

External fault

Schindler · Altivar 312 Drive

What does EPF mean?

This fault is triggered by an external condition, typically via a configured digital input. It indicates that an external device or safety circuit has signalled a fault condition to the drive.

Common Causes

  • A logic input configured for external fault detection has been activated.
  • An external device connected to the drive has reported a fault condition.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify which digital input is configured as the external fault input and check its status.

  2. 2

    Inspect the external equipment or safety circuit connected to the external fault input for its status.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

A-17Alarm buttonCFFINCORRECT CONFIG.CFIINVALID CONFIG
Source: Schindler Altivar 312 Drive
Open Manual (Page 91)Search more codes in this manual