EncoderWorks can configure OCD-PPA1B-0812-B11S-CRW as a custom compatible replacement solution for absolute multiturn feedback where 20-bit Bit Parallel data, Binary code interpretation, latch timing, DIR logic, and 1 m radial cable wire mapping must remain aligned with the installed controller. The failure boundary is not only the 10–30 V push-pull output level, but also bit order, 12-bit singleturn significance, 8-bit multiturn range, cable color assignment, sampling timing, Ø11 mm blind-hollow fit, and radial cable clearance. Typical production lead time: 15 working days.
This model is used where the control system reads an absolute multiturn position word through discrete parallel data lines. A compatible replacement must preserve the 12-bit singleturn and 8-bit multiturn code combination, push-pull output behavior, Binary data interpretation, latch input function, counting direction input, radial cable route, and Ø11 mm blind-hollow mechanical interface.
System Limits
The first system boundary is the 20-bit Binary parallel data structure. OCD-PPA1B-0812-B11S-CRW uses Bit 1 to Bit 20 as discrete position data lines, combining singleturn and multiturn information in the controller’s absolute word. If the replacement is treated as a 16-bit singleturn device, configured with Gray code, wired with shifted bit significance, or supplied without the same latch and DIR behavior, the controller can receive stable electrical signals but calculate the wrong position. Typical failure symptoms include position jumps, reversed travel, incorrect multiturn count, unstable end-position logic, or repeatable offset after power cycling.
The second boundary is the 1 m radial cable and Ø11 mm blind-hollow installation. The cable version depends on correct wire-color mapping, shield continuity, supply reference, GND integrity, latch state, and DIR state. A replacement can fail even when voltage and total bit count match if one data wire is swapped, the latch line is left floating, the DIR line is wired with the wrong state, or the radial cable is pulled against the machine frame. Mechanically, hollow-shaft clamping, shaft insertion depth, static and dynamic misalignment, side clearance, and flange seating must stay within the installed system’s tolerance.
Wiring & Installation
Before replacement, confirm the full installed model code, 10–30 V supply, push-pull parallel input compatibility, 20-bit data mapping, Binary code handling, latch input use, DIR input logic, radial cable route, wire-color assignment, and controller sampling method. Do not treat this as a Profinet, Profibus, EtherNet/IP, CANopen, Analog Voltage, or incremental replacement, because the controller is reading a complete absolute multiturn word rather than a configured network device, voltage value, or A/B/Z pulse train.
The blind-hollow shaft installation must also be checked carefully. The Ø11 mm hollow shaft, 30 mm insertion depth, B-flange interface, clamping condition, torque restraint, radial cable clearance, axial and radial misalignment, and grounding continuity can affect long-term stability. Poor clamping, excessive shaft offset, cable pulling force, or shield discontinuity can cause mechanical drift, intermittent data faults, or early bearing wear.
Custom Compatible Solution
- Match 12-bit singleturn plus 8-bit multiturn Bit Parallel feedback with Binary output behavior
- Preserve Bit 1–20 mapping, latch function, DIR logic, supply reference, and cable wire-color assignment
- Adapt the Ø11 mm blind-hollow shaft, 30 mm depth, 58 mm B-flange class, and 1 m radial cable boundary
- Review controller sampling timing, cable shielding, grounding, radial cable clearance, and shaft misalignment before shipment
Key Data
| Item | Data |
|---|---|
| Model | OCD-PPA1B-0812-B11S-CRW |
| Encoder type | Absolute multiturn rotary encoder |
| Interface | Bit Parallel |
| Output driver | Push-Pull |
| Supply voltage | 10–30 VDC |
| Sensor technology | Optical |
| Code | Binary |
| Singleturn resolution | 12 bit |
| Multiturn resolution | 8 bit |
| Total data width | 20-bit parallel data |
| Multiturn technology | Mechanical gearing, no battery |
| Manual function | Counting direction via cable or connector |
| Connection | 1 m radial cable |
| Cable boundary | Wire-color mapping requires confirmation before replacement |
| Shaft / flange | Blind hollow, Ø11 mm shaft, 30 mm depth, 58 mm B flange class |
| Protection class | IP66 / IP67 boundary requires confirmation against installed version |
| Key replacement checks | Bit 1–20 mapping, Binary code interpretation, latch timing, DIR logic, push-pull input match, radial cable wiring, Ø11 mm blind-hollow fit |
