9. TROUBLESHOOTING
Display | Name | Definition |
| Cause | Action |
35 | Command | Input frequency of | 1. | Command given is greater than | Review opration program. |
| frequency error | command pulse is |
| the maximum speed of the servo |
|
|
| too high. |
| motor. |
|
|
|
| 2. | Noise entered bus cable. | Take action against noise. |
|
|
| 3. | Servo system controller failure | Change the servo system controller. |
36 | Transfer error | Bus cable or printed | 1. | Bus cable is disconnected. | Connect the connector of the bus cable. |
|
| board is faulty | 2. | Bus cable fault. | Change the cable. |
|
|
| 3. | Printed board is faulty. | Change the servo amplifier |
|
|
| 4. | Terimination connector | Connect termination connector. |
|
|
|
| disconnected |
|
37 | Parameter error | Parameter setting is | 1. | Servo amplifier fault caused the | Change the servo amplifier. |
|
| wrong. |
| parameter setting to be rewritten. |
|
|
|
| 2. | There is a parameter whose value | Change the parameter value to within the |
|
|
|
| was set to outside the setting | setting range. |
|
|
|
| range by the controller. |
|
45 | Main circuit | Main circuit device | 1. | Servo amplifier faulty. | Change the servo amplifier. |
| device overheat | overheat | 2. | The power supply was turned on | The drive method is reviewed. |
|
|
|
| and off continuously by overloaded |
|
|
|
|
| status. |
|
|
|
| 3. | Air cooling fan of servo amplifier | 1. Change the servo amplifier or cooling |
|
|
|
| stops. | fan. |
|
|
|
|
| 2. Reduce ambient temperature. |
46 | Servo motor | Servo motor | 1. | Ambient temperature of servo | Review environment so that ambient |
| overheat | temperature rise |
| motor is over 40 . | temperature is 0 to 40 . |
|
| actuated the | 2. | Servo motor is overloaded. | 1. Reduce load. |
|
| thermal protector. |
|
| 2. Review operation pattern. |
|
|
|
|
| 3. Use servo motor that provides larger |
|
|
|
|
| output. |
|
|
| 3. | Thermal protector in encoder is | Change servo motor. |
|
|
|
| faulty. |
|
50
Overload 1
Load exceeded overload protection characteristic of servo amplifier. Load ratio 300%:
2.5s or more
Load ratio 200%: 100s or more
1. | Servo amplifier is used in excess | 1. | Reduce load. |
| of its continuous output current. | 2. | Review operation pattern. |
|
| 3. Use servo motor that provides larger | |
|
|
| output. |
2. | Servo system is instable and | 1. | Repeat acceleration/ |
| hunting. |
| deceleration to execute auto tuning. |
|
| 2. | Change auto tuning response setting. |
|
| 3. | Set auto tuning to OFF and make gain |
|
|
| adjustment manually. |
3. | Machine struck something. | 1. | Review operation pattern. |
2.Install limit switches.
4.Wrong connection of servo motor. Connect correctly. Servo amplifier's output terminals
U, V, W do not match servo motor's input terminals U, V, W.
5. Encoder faulty. |
| Change the servo motor. | |||
|
| Checking method |
|
|
|
|
|
|
|
| |
| When the servo motor shaft is |
|
| ||
| rotated slowly with the servo off, |
|
| ||
| the cumulative feedback pulses |
|
| ||
| should vary in proportion to the |
|
| ||
| rotary angle. If the indication |
|
| ||
| skips or returns midway, the |
|
| ||
| encoder is faulty. |
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
9 - 5
