8259

Category: Alarm

Cause

1. Incorrect U V W phase sequence of the motor cable
2. Incorrect 200A-09h parameter setting
3. The input command exceeds the overspeed fault threshold
4. Motor speed overshoot
5. Servo drive fault

Corrective action

1. Check whether the connections at both ends of the drive power cable correspond individually to the motor cable U V W terminals and drive U V W terminals. Wire in the correct U V W phase sequence.
2. Check whether the overspeed fault threshold is below the maximum motor speed required for actual operation: Overspeed fault threshold=1.2 times the maximum motor speed (200A-09h=0); overspeed fault threshold=200A-09h (200A-09h ≠ 0 and 200A-09h ＜ 1.2 times the maximum motor speed). Reset the overspeed fault threshold according to mechanical requirements.
3. Check whether the motor speed corresponding to the input command exceeds the overspeed fault threshold. ◆Position control mode: In CSP mode, check gear ratio 6091-01h/6091-02h, determine the position command increment corresponding to one synchronization cycle, and convert it to speed information. In PP mode, check gear ratio 6091-01h/6091-02h and determine 6081h (profile velocity). In HM mode, check gear ratio 6091-01h/6091-02h and determine 6099-01h and 6099-02h. ◆Speed control mode: Check gear ratio 6091h, target velocity 60FFh, and speed limits 2006-07h~2006-0Ah,607Fh (maximum profile velocity). ◆Torque control mode: Check the speed limit setting 2007-12h in torque mode, then check the corresponding speed limit value. ◆Position control mode: CSP: Reduce the position command increment corresponding to one synchronization cycle; add a position ramp when planning commands in the host controller. PP: Reduce 6081h or increase the acceleration/deceleration ramps (6083h,6084h). HM: Reduce 6099-01h and 6099-02h or increase the acceleration/deceleration ramp (609Ah). Reduce the gear ratio as appropriate. ◆Speed mode: Reduce the target speed, speed limit, and gear ratio. In PV mode, increase speed ramps 6083h and 6084h. In CSV mode, the host controller should add speed ramp processing. ◆Torque control mode: Set the speed limit below the overspeed fault threshold.
4. Use the Inovance drive commissioning platform to check whether Speed feedback exceeds the overspeed fault threshold. Adjust the gain or mechanical operating conditions.
5. If the fault still occurs after powering on again and running, replace the servo drive.