Fault correction
The following table describes a selection of faults. Depending on the application, other causes may be responsible for the malfunction. Conspicuous control behavior is the result of incorrect parameterization of the servo drive.
With multi-axis systems such as the AX8000, malfunctions may have different causes.
Error | Cause | |||||||||||||||||||
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Motor standstill no starting | 1 | 2 |
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| 5 |
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Motor runs | 1 |
| 3 |
| 5 | 6 |
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Noises when |
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| 3 |
| 5 | 6 |
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| 11 |
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Noises during | 1 |
| 3 |
| 5 | 6 |
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| 11 |
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High temperature at idling speed |
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| 4 |
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| 7 | 8 | 9 |
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High temperature under load | 1 |
| 3 |
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| 7 | 8 | 9 |
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Uneven |
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| 10 | 11 |
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Grinding noises |
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| 12 |
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Brake fault |
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| 13 | 14 |
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Output stage fault |
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| 5 |
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| 15 | 16 |
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Feedback error |
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| 17 | 18 |
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No |
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| 5 | 6 |
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Leakages |
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| 19 |
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Number | Cause | Solution |
|---|---|---|
1 | Servo drive not enabled | Set ENABLE signal and enable servo drive |
Motor overload | Check the load and if necessary reduce it, then restart and enable the servo drive. Set ENABLE signal | |
Mechanical blockage of the motor | Check mechanics and release blockage | |
Holding brake [+] not released | Check the control configuration of the holding brakes [+] and reconfigure if necessary | |
2 | Phase interruption in the power supply or reversed motor phases | Check servo drive and supply cables and replace any defective cables |
3 | Phase interruption after power supply; switching on | Check servo drive and supply cables and replace any defective cables |
Power cable or feedback cable with defective shield | Check earth connection and shielding | |
4 | Short-circuit in the voltage supply cable for the holding brake [+] | Replace defective cable, measure and check cable after replacement |
Output voltage of the servo drive too low | Check the settings in the configuration and read out the electronic type plate of the motor again | |
Defective holding brake [+] | Replace motor, then measure and check | |
5 | Short circuit or earth leakage in the motor cable | Replace defective motor cable, then measure and check |
6 | Power connector not fitted correctly | Check the connectors on the power connector and on the motor |
Interruption in the feedback or motor cable | Check cables for broken wire or crushing. Replace defective cables, then measure and check. |
Number | Cause | Solution |
|---|---|---|
7 | Required holding torque too high | Check design or configuration and adjust if necessary |
8 | Inlet temperature too high | Lower and adjust the inlet temperature |
No more cooling water available | Replenish cooling water and check regularly | |
9 | Motor heat dissipation system not functioning | Clean the surface of the motors and the servo drive as well as the heat sinks and exhaust air slots. Check the installation depths of the servo drives and motors. |
10 | Power cable or feedback cable with defective or insufficient shielding | Check earth connection and shielding |
11 | Servo drive gain set too high. | Reconfigure the parameters of the servo drive and adjust them if necessary |
12 | Contamination or foreign bodies inside the motor | Send in motor. The repair is carried out by the vendor. |
Rotating parts chafing on the housing or motor components | Inspect chafing parts and readjust if necessary | |
Defective bearings; irreparable bearing damage | Send in motor. The repair is carried out by the vendor. |
Number | Cause | Solution |
|---|---|---|
13 | Short-circuit in the voltage supply cable for the holding brake [+] | Replace defective cable, then measure and check |
14 | Inadequate power supply of the holding brake [+] | Check the settings in the configuration and read out the electronic type plate of the motor again |
15 | Short circuit or earth leakage in the motor | Replace defective motor, then measure and check |
16 | Insufficient power supply | Check the settings in the configuration and read out the electronic type plate of the motor again |
17 | Interruption or crushing in the feedback cable | Check cables for broken wire or crushing. Replace defective cables, then measure and check. |
18 | Feedback connector not fitted correctly | Check the position of the feedback connector |
Loose fit of the feedback connector or no contact of the plug contacts with the power socket of the motor. | Check the connector assembly. Contact Beckhoff Service if necessary. | |
19 | Cooling water pipes and/or water connections leaky or defective | Determine leakage |