We developed a custom solution for the OCD-PPA1B-00AA-B11S-CRW encoder, intended for systems where bit-parallel absolute position feedback must remain stable under vibration, temperature variation, and industrial electrical noise while using a compact blind-hollow shaft structure. This configuration uses a blind hollow shaft Ø11 mm, 58 mm flange housing, optical sensing, and a bit-parallel interface with push-pull output, making it suitable for control systems that require direct parallel word acquisition rather than serial fieldbus communication. It is not a general-purpose encoder. It is a parallel absolute feedback solution where latch timing, signal wiring quality, and hollow-shaft alignment determine whether the system remains usable. Typical production lead time: 15 working days.

Custom Solution Photos

OCD-PPA1B-00AA-B11S-CRW Parallel Absolute Encoder Solution-EncoderWorks
OCD-PPA1B-00AA-B11S-CRW Parallel Absolute Encoder Solution-EncoderWorks

Stable operation depends on hollow-shaft fit, radial cable routing, wiring integrity, and correct latch and direction signal integration.

System Limits

  • Parallel bit wiring errors or weak signal routing → position word becomes invalid
  • Wrong latch or DIR handling → system-level position logic becomes incorrect
  • Excess misalignment or shaft overload → lifetime and feedback stability drop

This model is built around a bit-parallel interface, not SSI, Profibus, or PROFINET, so the main system bottleneck is the parallel signal chain rather than network configuration. It provides 9-bit singleturn absolute feedback, uses binary code, and outputs through a push-pull driver. In practice, usable position data depends on correct handling of Bit 1–9, Latch, and DIR, not just on nominal encoder resolution.

Installation and Wiring Constraints

  • Use Bit 1 to Bit 9, Latch, DIR, Power Supply, and GND exactly as defined
  • Keep the 1 m radial cable stable and protected
  • Respect the minimum bend radius of 150 mm
  • Keep control-side logic consistent with binary code and the default clockwise shaft sense
  • Respect the static misalignment limit of ±0.3 mm axial / ±0.5 mm radial and the dynamic misalignment limit of ±0.1 mm axial / ±0.2 mm radial

Failure boundary:

  • Wrong bit mapping → corrupted absolute word
  • Wrong latch or DIR logic → incorrect position interpretation
  • Excess shaft misalignment → unstable operation and shortened service life
  • Poor cable routing → intermittent parallel data faults

Replacement and Interface Mapping

  • Suitable for bit-parallel absolute positioning systems
  • Applicable where blind hollow shaft mounting and direct parallel data acquisition are required
  • Not suitable where serial interfaces are expected instead of parallel word processing
  • Designed for direct PLC or control-word integration, not for fieldbus replacement.

Key Data

  • Model: OCD-PPA1B-00AA-B11S-CRW
  • Type: Absolute encoder, Bit Parallel
  • Interface: Bit Parallel
  • Output driver: Push-Pull
  • Manual function: Counting direction via cable or connector
  • Singleturn resolution: 9 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, Ø11 mm, depth 30 mm
  • Max speed: ≤3000 rpm
  • Protection: IP66/IP67 shaft and housing
  • Temperature: -30 °C fixed, -5 °C flexible, up to +70 °C
  • Housing: Steel with cathodic corrosion protection
  • Weight: 295 g