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ErrorLib — Industrial Fault Code Library

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4306

Slow manual velocity not allowed

Beckhoff · TwinCAT 2 NC

What does 4306 mean?

The value configured for the slow manual velocity parameter is not allowed. The accepted range for this parameter is [0.0, 10000.0] (e.g., m/min). An invalid setting prevents the system from reliably executing slow manual movements, potentially leading to no motion or jerky manual control.

Common Causes

  • The configured slow manual velocity parameter (e.g., P2-15) is set to a value outside the acceptable range of [0.0, 10000.0] (m/min).
  • Attempt to enter a negative value for the slow manual velocity, which is physically impossible for speed and outside the allowed range.
  • Units mismatch: The entered value is interpreted in incorrect units (e.g., mm/s instead of m/min) making it appear out of range to the system.
  • Data corruption or incorrect transfer of the parameter value from the HMI or configuration software to the drive controller.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Access the slow manual velocity parameter (e.g., P2-15, Jog Slow Speed) and ensure its value is between 0.0 and 10000.0.

  2. 2

    2. Verify the specified units (e.g., m/min) for the parameter P2-15 and ensure the entered numerical value corresponds to these units.

  3. 3

    3. Re-enter the desired slow manual velocity value using the drive's programming software to ensure correct data integrity.

  4. 4

    4. Check for any scaling factors or unit conversions (e.g., P0-03, Position Units) that might be affecting the interpretation of the velocity parameter.

  5. 5

    5. Save the parameter changes to non-volatile memory and perform a power cycle of the drive to ensure the new value is active.

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Verified technical data. Last updated: April 2026

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Source: Beckhoff TwinCAT 2 NC
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