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.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Vacon NX All-in-One Application