Fault correction
The following table describes only a selection of faults. There can be a large number of different reasons for a fault, depending on the particular conditions in your system. The fault causes described below are mostly those which directly influence the motor.
Our applications department can give you further help with your problems.
Error | Cause | ||||||||||||||
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Motor standstill, no starting | 1 | 2 |
| 4 |
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Motor runs sluggishly | 1 |
| 3 | 4 | 5 |
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No brake effect |
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| 4 | 5 |
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Noises when starting up |
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| 3 | 4 | 5 |
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| 9 |
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Noises during operation | 1 |
| 3 | 4 | 5 |
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| 9 |
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High temperature at idling speed |
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| 6 |
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High temperature under load | 1 |
| 3 |
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| 6 | 7 |
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Uneven running behavior |
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| 8 | 9 |
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Grinding noises |
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| 10 |
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Output stage fault |
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| 4 |
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| 11 | 12 |
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Feedback error |
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| 13 | 14 |
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Number | Cause | Solution |
|---|---|---|
1 | Stepper motor terminal or stepper motor module not enabled | Set ENABLE signal and enable stepper motor terminal or stepper motor module |
Motor overload | Check load and reduce if necessary, then restart and enable the stepper motor terminal or the stepper motor module; set ENABLE signal | |
2 | Phase interruption in the power supply or reversed motor phases | Check stepper motor terminal or stepper motor module and supply lines, power and feedback, and replace defective cables |
3 | Phase interruption after power supply; switching on | Check stepper motor terminal or stepper motor module and supply lines, power and feedback, and replace defective cables |
Feedback cable or motor cable with defective shield | Check ground connection and shielding | |
4 | Short circuit or earth leakage in the motor cable | Replace defective motor cable, then measure and check |
5 | 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 | |
6 | Heat dissipation via flange connection too low | Dimension the flange according to the technical data in the operating instructions |
7 | Motor too small | Check motor design and adapt to the application. If necessary, select a larger series and replace the motor. |
8 | Shield of feedback or motor cable defective or inadequate | Check ground connection and shielding |
9 | Gain of stepper motor terminal or stepper motor module set too high | Reconfigure the parameters of the stepper motor terminal or stepper motor module and adjust them if necessary |
10 | 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. | |
11 | Short circuit or earth leakage in the motor | Replace defective motor, then measure and check |
12 | Insufficient power supply | Check the settings in the configuration and read out the electronic identification plate of the motor again |
13 | Interruption or crushing in the feedback cable | Check cables for broken wire or crushing. Replace defective cables, then measure and check. |
14 | 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 |