Encoder Calibration and Repair
The encoder is the eye of the motor, providing synchronization between motor and drive. Contamination of the optical disk or signal loss stops your machine even if the winding is intact. We calibrate faulty encoders to original values and refit them.
Encoder Fault Symptoms
- Encoder fault / feedback alarm
- Position drift, motor runaway or vibration
- Loss of communication with the drive
- Irregular speed and positioning error
Our Encoder Lab
We clean the optical glass disk, check the light source (LED) and analyse signals (Sin/Cos, EnDat, SSI) with an oscilloscope. Where needed we replace the communication chip and reader eye and calibrate the encoder to original zero values. For resolver-based motors see our services.
Encoder or Resolver?
The two feedback systems work differently. We help you determine the right one for your motor.
Frequently Asked Questions
Why does an encoder fault occur?
The most common causes are optical-disk contamination, a weakened light source or a faulty reader eye. It is solved by cleaning and calibration.
If the winding is fine, why does the encoder stop the machine?
If the encoder cannot report position to the drive, the drive halts motion even with a healthy motor.
Is encoder calibration mandatory?
Yes. Without zero-point calibration after repair or replacement, the motor will show position errors.
Is there a warranty after repair?
Yes. Every calibrated encoder is delivered under warranty after testing.