Schneider Electric Lexium 17S Series - Manual (Page 94)

82
Troubleshooting, continued
Problems,
Possible Causes
and Corrective
Actions,
continued
Problem Possible Causes Corrective Actions
Motor oscillates - Gain too high (speed controller).
- Shielding in feedback cable has
a break.
- Reduce Kp (speed controller).
- Replace feedback cable.
Poor drive
performance
(drive too soft) - Kp (speed controller) too low.
- Tn (speed controller) too high.
- PID-T2 too high.
- T-Tacho too high.
- Increase Kp (speed controller).
- Use motor default value for Tn
(speed controller).
- Reduce PID-T2.
- Reduce T-Tacho.
Motor runs
roughly - Kp (speed controller) too high.
- Tn (speed controller) too low.
- PID-T2 too low.
- T-Tacho too low.
- Reduce Kp (speed controller).
- Use motor default value for Tn
(speed controller).
- Increase PID-T2.
- Increase T-Tacho.