Code

Name

Causes

Possible Solutions

CF

Control Fault

Motor parameters are set incorrectly

Correctly set the motor parameters and do Auto-Tuning again.

The torque limit setting is too low.

Adjust L7-01 to L7-04 [Torque Limit].

The load inertia is too large.

  • Adjust C1-02, C1-04, C1-06, and C1-08 [Deceleration Times].

  • Set the frequency reference to the minimum output frequency, and stop the Run command when the drive stops deceleration.

The drive is trying to ramp to stop a machine that cannot do ramp to stop or on a machine for which deceleration is not necessary.

Correctly set b1-03 [Stopping Method Selection].

The motor and drive are connected incorrectly.

Correct wiring errors.

Line-to-line Resistance Tuning is not done.

Do Stationary Auto-Tuning for Line-to-Line Resistance.

The drive received a Run command while the motor was coasting.

  • Examine the sequence and input the Run command after the motor fully stops.

  • Set b3-01 = 1 [Speed Search at Start Selection = Enabled].
Note:

  • The drive detects this error if the torque reference is more than the torque limit for 3 seconds or longer while the drive ramps to stop.

  • Do a Fault Reset to clear the fault.