We developed a custom solution for the OCD-PPA1B-0008-B10S-CRW encoder, intended for systems where 8-bit bit-parallel absolute position feedback must remain stable under compact blind-hollow shaft mounting, direct PLC input, and industrial electrical noise. This configuration uses a blind hollow Ø10 mm shaft, Ø58 mm blind-hollow flange, 1 m radial cable, optical sensing, and a bit-parallel push-pull interface. It is not a serial encoder and it is not a fieldbus device. It is a parallel absolute feedback solution where bit mapping, latch timing, DIR logic, cable routing, and hollow-shaft alignment determine whether the position word remains usable. Typical production lead time: 15 working days.

Custom Solution Photos

OCD-PPA1B-0008-B10S-CRW Parallel Encoder Solution-EncoderWorks
OCD-PPA1B-0008-B10S-CRW Parallel Encoder Solution-EncoderWorks

Stable operation depends on hollow-shaft fit, radial cable protection, shielding quality, and correct latch and direction signal integration.

System Limits

  • Wrong bit mapping → corrupted 8-bit absolute position word
  • Latch not controlled → unstable PLC sampling during motion
  • Poor cable routing or shielding → intermittent bit-level faults

This model is built around bit-parallel output, not SSI, Profibus, PROFINET, CANopen, or analog output. The encoder provides 8-bit singleturn absolute feedback, uses binary code, and outputs through a push-pull driver. The real system bottleneck is not the optical sensing element, but whether the controller can correctly read Bit 1 to Bit 8, Latch, and DIR through the radial cable. If wiring, latch timing, or direction logic is wrong, the PLC receives incorrect position data even when the encoder body is mechanically normal.

Installation and Wiring Constraints

  • Use Bit 1 to Bit 8, Latch, DIR, Power Supply, and GND exactly as defined
  • Keep the 1 m radial PVC cable protected from bending stress and EMC exposure
  • Respect the minimum bending radius of 150 mm
  • Match the blind hollow shaft fit to Ø10 mm / 30 mm depth
  • Keep static misalignment within ±0.3 mm axial / ±0.5 mm radial
  • Keep dynamic misalignment within ±0.1 mm axial / ±0.2 mm radial

Failure boundary:

  • Wrong latch handling → intermittent position jumps
  • Wrong DIR logic → reversed position interpretation
  • Poor shielding → bit-level data errors
  • Excess misalignment → unstable operation and reduced service life

Replacement and Interface Mapping

  • Suitable for 8-bit bit-parallel absolute positioning systems
  • Applicable where Ø10 mm blind hollow shaft, radial cable, and binary parallel output are required
  • Not suitable where serial interface, fieldbus integration, or loose shaft fit is expected
  • Best used in PLC systems that can manage parallel bit input and latch timing correctly

Key Data

  • Model: OCD-PPA1B-0008-B10S-CRW
  • Type: Absolute encoder, bit-parallel
  • Interface: Bit Parallel, push-pull
  • Singleturn resolution: 8 bit
  • Code: Binary
  • Supply voltage: 10–30 VDC
  • Current consumption: ≤400 mA @ 10 VDC, ≤180 mA @ 24 VDC
  • Power consumption: ≤1.5 W
  • Start-up time: <1 s
  • Settling time: 80 ms
  • Sensor technology: Optical
  • Flange: Blind Hollow, Ø58 mm
  • Shaft: Blind Hollow, Ø10 mm, depth 30 mm
  • Connection: 1 m radial cable, PVC
  • Minimum bending radius: 150 mm
  • Protection: IP66/IP67 shaft and housing
  • Temperature: -30 °C fixed, -5 °C flexing, up to +70 °C
  • Max speed: ≤3000 rpm
  • Housing: Steel with cathodic corrosion protection + painted coating