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7

Deviation in Speed

Kone · Frequency Inverter

¿Qué significa 7 ?

This error indicates a significant difference between the commanded speed and the actual motor speed, exceeding an allowed tolerance. This suggests a problem with the drive's speed control, speed feedback mechanism, or a mechanical issue affecting motor speed.

Causas comunes

  • Incorrect PID controller tuning in the drive's speed control loop.
  • Malfunction or complete loss of feedback from the speed encoder or resolver (if used).
  • Mechanical binding, excessive friction, or damage within the load.
  • Insufficient motor torque to achieve the commanded speed due to severe overload.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Verify the functionality and connections of the speed feedback device (e.g., encoder, resolver) for proper signal integrity.

  2. 2

    Check the actual motor speed against the commanded speed using the drive's diagnostic tools or an external tachometer.

  3. 3

    Adjust the speed control PID parameters (proportional, integral, derivative gains) in the drive for improved response and stability.

  4. 4

    Inspect the mechanical system for any physical obstructions or signs of excessive friction that could impede motor speed.

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Datos técnicos verificados. Última actualización: March 2026

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