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7121

MOTOR STALL

ABB · ACS800 Standard Firmware

¿Qué significa 7121 ?

The motor is operating in a stall region, which occurs when the load exceeds the motor's capability, or the motor power is insufficient for the application. This fault is linked to bit 14 of Fault Word 2 (3.06 FW 2) and controlled by Fault Functions 30.10 through 30.12.

Causas comunes

  • Motor speed is zero or near-zero while commanded to run.
  • Excessive mechanical load preventing motor rotation.
  • Motor winding fault.
  • Drive is commanded to run but motor is mechanically blocked.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Evaluate the mechanical load on the motor and compare it against the motor and drive's rated power and torque capabilities.

  2. 2

    Review drive parameters related to motor stall protection, specifically 30.10 (Stall Function), 30.11 (Stall Freq Hi), and 30.12 (Stall Time).

  3. 3

    Adjust the acceleration/deceleration ramps to reduce peak torque demands if the load is dynamic.

Ver todos los códigos en este manual (33)
Datos técnicos verificados. Última actualización: March 2026

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