Encoder Feedback Cables: Why Quality Determines Positioning Accuracy

In CNC machining centres, turn-mill machines and high-precision automation equipment, positioning accuracy and repeatability depend heavily on the quality of the encoder feedback cable.

Encoder feedback cables carry high-frequency position signals between the encoder and the drive. Poor shielding, weak conductors or high capacitance cause signal loss, noise and even positioning drift, such as the common 6FX5002-2CA31 motor feedback cable failure scenarios.

What to look for in an encoder cable

  • Complete shielding with a properly grounded drain wire
  • Stable, matched impedance for clean signal transmission
  • High-flex construction that withstands continuous bending
  • Corrosion-resistant connectors that keep the connection tight

Tensolink encoder feedback cables are designed to deliver lossless signals over long runs, keeping every axis accurate.