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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.

0BB4

MFI periphery fault history (PF TEN)

SEW Eurodrive · Drives

What does 0BB4 mean?

The MFI signals a periphery fault when a microprocessor reset has been carried out, typically due to EMC problems or defective hardware. This code logs the last 10 periphery faults, indicating intermittent or persistent issues.

Common Causes

  • Microprocessor reset on the MFI due to EMC (Electromagnetic Compatibility) problems.
  • Defective hardware on the MFI electronic unit.
  • Interrupted or poor wiring/shielding for the MFI.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the wiring and shielding of the MFI for proper installation and integrity.

  2. 2

    Ensure the MFI is switched on and receiving proper power.

  3. 3

    If the fault reoccurs after checking wiring and power, install a new MFI electronic unit.

Browse all codes in this manual (39)
Verified technical data. Last updated: April 2026

Related Faults

01Overcurrent in output stage04Brake chopper error06Mains phase failure
Source: SEW Eurodrive Drives
Open Manual (Page 111)Search more codes in this manual