Motor Stalled

What does F6 mean?

This fault occurs when the drive is unable to accelerate the motor to its commanded speed within the programmed acceleration time. It typically signifies that the motor is experiencing an excessive mechanical load, or the acceleration time is set too aggressively for the current load. The drive attempts to provide enough current but hits its current limit (A441 [Current Limit]) before the motor reaches the desired speed. Repeated stalling can lead to motor and drive overheating and wear.

• Excessive mechanical overload on the motor shaft exceeding the motor's rated torque (e.g., jammed conveyor, seized bearing).
• Acceleration time parameter (e.g., P1-09) set too short for the connected load's inertia.
• Motor nameplate parameters (e.g., P2-01 (Motor rated power), P2-02 (Motor rated voltage), P2-03 (Motor rated current)) incorrectly entered or mismatched.
• Excessive friction or mechanical binding within the driven equipment or transmission components.
• Motor winding fault or internal damage causing reduced torque output.

Click steps to track your progress.

1. 1

   Inspect the mechanical load connected to the motor shaft for any binding, obstruction, or excessive friction.

2. 2

   Measure motor winding resistance (U-V, V-W, W-U) and insulation resistance (each phase to ground) to rule out motor internal faults.

3. 3

   Increase the acceleration time parameter (e.g., P1-09) to allow for a more gradual speed ramp for the load.

4. 4

   Verify that all motor nameplate parameters (P2-01 to P2-08) are accurately entered into the drive's configuration.

5. 5

   Perform an autotune function (e.g., setting P2-09 to 1) to optimize the drive's motor control parameters for the specific motor.

6. 6

   Monitor motor current (A) during attempted acceleration to identify the point and magnitude of the stall event.