Rotation of motor is unstable. Motor rotation position varies.
| Cause | Solution |
|---|---|
| The origin sensor is too close to the encoder Z phase. | Adjust the origin sensor position. |
| The setting for the maximum frequency of the generated pulse is not appropriate. | Set the maximum frequency value within the range specified in the drive’s specifications. |
| Excessive power swing at the stepper motor. | Find out the cause of the overload to cancel the situation or run with lower speed / acceleration. |
| The wiring that connects the PG Board to the drive is too long. | Keep the wiring as short as possible. (The length recommended is 1.5 meters or shorter.) |
| There is a powerful noise source in the surrounding area. | Refer to the following for more details. Also refer to the related sections for the wiring and noise countermeasures in the drive’s manual. |
| The [Clear MCal] may be set to “False” in [System Configuration]-[Controller]-[Robots] when you use the servo motor. | Refer to the following and set the [Clear MCal] to “True”. |