We developed a custom solution for the GA241.B125102 encoder, intended for applications where stable 13-bit Gray-code parallel absolute position output must be maintained under industrial noise, direct PLC input structures, and synchro-flange mounting conditions. This configuration is based on the GA241 singleturn parallel absolute encoder platform, using a synchro flange, Ø6 mm solid shaft, 10–30 VDC supply, and Gray-code push-pull parallel output. It is not a serial interface device and it is not tolerant of loose control logic. It is a parallel data system where STORE, ENABLE, UP/DOWN, and Zero setting must be integrated correctly or the position word becomes unreliable. Typical production lead time: 15 working days.

Custom Solution Photos

GA241.B125102 Gray Parallel Encoder Synchro Flange Solution-EncoderWorks
GA241.B125102 Gray Parallel Encoder Synchro Flange Solution-EncoderWorks

Stable operation depends on shaft alignment, synchro flange rigidity, connector integrity, and clean parallel signal handling.

System Limits

  • No STORE signal during readout → position data can change during sampling
  • ENABLE not held active → outputs switch to high-impedance and appear lost
  • Weak shielding or noisy parallel wiring → bit errors and unstable absolute values

The GA241 platform is a 13-bit optical singleturn parallel encoder with 8192 steps per turn, push-pull short-circuit-proof outputs, and permanent code continuity check. Its core value is deterministic parallel data output, but its main system boundary is still the signal chain. If the controller does not latch data correctly or if the 13 data lines are exposed to interference, the system can show false position values even when the encoder itself is mechanically normal.

This model uses Gray code, which reduces transition ambiguity compared to binary output and improves read stability when all bits are not sampled at the exact same instant. However, Gray code does not eliminate the need for proper STORE timing, correct ENABLE control, and effective shielding. It reduces one failure mode but does not remove system-level wiring risks.

Installation and Wiring Constraints

  • Use rigid synchro flange mounting and maintain proper shaft alignment
  • Use the STORE input to latch data before reading
  • Keep ENABLE at active low during output operation
  • Define UP/DOWN correctly to match the real shaft direction
  • Return Zero setting to GND after setting for best interference immunity
  • Shield all D0 to D12 data lines and control lines in noisy environments

Failure boundary:

  • Missing STORE logic → unstable Gray readout
  • ENABLE high → no usable output
  • Wrong UP/DOWN logic → reversed position behavior
  • Poor shielding → corrupted parallel word
  • Excess shaft load or misalignment → reduced mechanical reliability

Replacement and Interface Mapping

  • Suitable for systems requiring 13-bit Gray-code parallel absolute position feedback
  • Applicable where synchro flange mounting and Ø6 mm shaft are required
  • Not suitable where serial interfaces are expected or where parallel timing cannot be controlled
  • Best used in control systems that can manage latch, enable, and direction logic correctly

Key Data

  • Model: GA241.B125102
  • Type: Singleturn absolute encoder, parallel
  • Sensing method: Optical
  • Resolution: 13 bit / 8192 steps
  • Code: Gray
  • Output circuit: Push-pull, short-circuit proof
  • Supply voltage: 10–30 VDC
  • Initializing time: typ. 20 ms
  • Accuracy: ±0.025°
  • Shaft: Ø6 mm solid shaft
  • Flange: Synchro flange
  • Max speed: ≤10000 rpm mechanical / ≤6000 rpm electrical
  • Shaft load: ≤20 N axial / ≤40 N radial
  • Protection: IP54 without shaft seal / IP65 with shaft seal
  • Operating temperature: -25 to +85 °C
  • Housing: Ø58 mm aluminium

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