Incremental Encoder

Incremental encoder

Repair & Services

Incremental Encoder

Another Important servo motor feedback device for repairs and audits is the incremental encoder. This piece of equipment operates through photoelectric scanning of the fine lines on the rotating disk.

Incremental encoders provide an A and B pulse output. Pulse outputs provide no usable count information in their own right. With an incremental encoder, the counting is done by external electronics. The output on lines A, B and Z are checked with an oscilloscope. Accurate count checks are done with pulse counting device such as Mitchell Electronics.

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Servo motor feedback device repair services cover many typical checks with these encoders. Some of the most common verifications we perform include :

  • Check the pulse stream of all waveforms with an oscilloscope
  • Check the relationship of the A, A*, B, B* signals with an oscilloscope
  • Check the Z, Z* signals with an oscilloscope
  • Perform line-level check on all lines to verify none are missing
  • Check line count with a digital pulse counter
  • Run continuous count at operating speed and check
  • Measure the offset from signal A to signal B
  • Measure the "on" time versus the "off" time of the pulses

These Tests help our certified Engineers ensure your servo motor is brought back up to operational efficiency standards set out by your OEM. That way, you can rely on the servo motor when you need it most, avoiding costly downtime and hazardous malfunctions.