Control Fault

What does CF Out of Control mean?

A torque limit was continuously reached for 3 seconds or longer during a ramp to stop while operating in open-loop vector control. This fault typically indicates that the motor parameters are not correctly set, preventing the drive from controlling torque effectively.

• Incorrect motor nameplate parameters (e.g., F1-01 to F1-06) entered into the drive, leading to an inaccurate motor model in open-loop vector control.
• Mechanical jamming or excessive friction in the driven load, causing the motor to continuously exceed its torque limit during deceleration.
• Motor is undersized for the application's deceleration requirements, resulting in insufficient braking torque to stop the load.
• Deceleration Torque Limit (Parameter P1-54) set too low, causing the drive to hit its limit prematurely during stopping.
• Significant load inertia mismatch when operating in open-loop vector control (L3-01=1), making deceleration difficult to control.

Click steps to track your progress.

1. 1

   Verify all motor nameplate data (kW, Amps, RPM, Volts, Hz) is accurately programmed into Parameters F1-01 through F1-06.

2. 2

   Perform a motor auto-tuning sequence (e.g., set L3-03 to 1) to optimize the motor model for open-loop vector control.

3. 3

   Increase the deceleration ramp time (Parameter C1-02) to reduce the instantaneous torque required during stopping.

4. 4

   Inspect the mechanical load for any binding, excessive friction, or jams that would impede smooth deceleration.

5. 5

   Adjust the deceleration torque limit (Parameter P1-54) to a higher value, ensuring it remains within the motor's and drive's safe operating limits.

6. 6

   Monitor motor current (U1-01) during deceleration to confirm it does not continuously exceed the motor's rated current.