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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.

26

Start-up Prevented

Vacon · NX All-in-One Application

What does 26 mean?

This fault occurs when the drive's start-up sequence is prevented, often because a run request signal is active (ON) while a new application program is being downloaded or immediately after. This prevents unintended motor operation during configuration.

Common Causes

  • Conditions required for safe start-up are not met (e.g., safety guards open).
  • A prerequisite configuration parameter is missing or invalid.
  • Initialization sequence failed due to an external fault.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the drive's run request signal is deactivated.

  2. 2

    Cancel any active prevention of start-up, ensuring safety protocols are followed.

Browse all codes in this manual (42)
Verified technical data. Last updated: April 2026

Related Faults

1Overcurrent10Input line supervision11Output phase supervision
Source: Vacon NX All-in-One Application
Open Manual (Page 374)Search more codes in this manual