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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.

26046

Mains phase failure, KPP/KSP (axis)

Kuka · KR C4 Controller

What does 26046 mean?

This fault indicates a failure or loss of one or more mains input phases to the KPP or KSP drive. This prevents the drive from receiving adequate power, leading to system shutdown or impaired operation.

Common Causes

  • Loss of one or more mains power phases
  • Issues with the power lead supplying the KPP
  • Incorrect or damaged KPP cabling for mains input

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the main power lead for continuity and proper connection.

  2. 2

    Check the KPP cabling connecting to the mains input for damage or loose connections.

  3. 3

    Reinitialize the drive bus by cycling Power Off / Power On.

  4. 4

    Check the KPP module for any status indicators.

Browse all codes in this manual (21)
Verified technical data. Last updated: April 2026

Related Faults

26031Internal error, KPP/KSP (axis)26032IxT overload error, KPP/KSP (axis)26033Ground fault, KPP/KSP (axis)
Source: Kuka KR C4 Controller
Open Manual (Page 158)Search more codes in this manual