Flow Ctrl Tech Engineering

Incremental & Absolute Encoders: Diagnosing Quadrature Phase Loss, Jitter & Missed Counts

Solve servo and high-speed motion tracking errors: diagnosing Channel A/B quadrature phasing (90-degree offset), differential RS-422 line drivers vs open collector, and shaft coupling slip.

  • Quadrature channels A and B are 90 degrees out of phase; phase order determines forward vs reverse direction.
  • Single-ended open-collector encoders pick up noise in factory environments; always specify differential line drivers (A, /A, B, /B, Z, /Z).
  • Position drift over time is usually caused by mechanical helical coupling slip or missing shield grounding.

Flow Ctrl Tech Engineering: Turnkey industrial automation, PLC programming, SCADA development, HMI, fieldbuses, and IIoT architectures. Contact our engineering center at [email protected] or phone +91 91110 91005.