Code

Name

Causes

Possible Solutions

CF

Control Fault

Motor parameters are set incorrectly

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

When A1-02 = 4 [Control Method Selection = Advanced Open Loop Vector], the drive takes long to ramp to stop because of these settings:

  • The torque limit setting is too low.

  • L3-11 = 1 [Overvoltage Suppression Select = Enabled].

  • d5-01 = 1 [Torque Control Selection = Torque Control].

When Rotational Auto-Tuning changes or the installation environment changes, make sure that you do Line-to-Line Resistance Tuning and set L8-20 = 0 [Control Fault & Step Out Detect = Disabled].

Note:

After you set L8-20 = 0, do test runs and examine the drive to make sure that it starts and stops correctly.

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.