OCD-PPA1G-0410-C060-PRT Parallel Encoder with 14-Bit Gray Mapping

OCD-PPA1G-0410-C060-PRT cannot be replaced by a binary or singleturn parallel encoder with the same ø6 mm shaft; EncoderWorks can configure a custom compatible replacement solution only when the 14-bit Gray-code pin order, 4-bit multiturn range, latch timing, DIR logic, push-pull level, radial M27 connector, and solid-shaft coupling are preserved together. The main failure boundary is a clean parallel input set decoded with the wrong code type, bit order, or multiturn wrap behavior. Typical production lead time: 15 working days.

This configuration is used where a controller reads absolute multiturn position directly through parallel inputs instead of SSI, Profibus, PROFINET, EtherNet/IP, or incremental A/B/Z signals. The encoder combines 10-bit singleturn resolution, 4-bit multiturn mechanical gearing, Gray code output, push-pull driver behavior, a ø58 mm clamp flange, ø6 mm solid shaft, and a radial M27 26-pin male connector. Replacement work should focus on Bit 1–14 assignment, Gray-code interpretation, controller input threshold, latch response, DIR input state, M27 pin mapping, shaft coupling alignment, and shield continuity.

System Limits

The first system limit is 14-bit Gray-code mapping. Bit 1 through Bit 14 must remain connected to the same controller inputs as the original encoder. If one bit is shifted, inverted, or assigned to the wrong M27 pin, the PLC may receive a stable but incorrect absolute position value.

The second limit is code type and multiturn scaling. This model uses Gray code with 10-bit singleturn and 4-bit multiturn feedback. If the controller expects binary input, or if the 4-bit multiturn range is configured like an 8-bit or 12-bit multiturn version, wrap behavior, preset logic, and software travel limits can fail after rotation or power cycling.

The mechanical limit is the ø6 mm solid shaft with clamp flange and radial M27 connector exit. Coupling misalignment, axial preload, radial load, connector clearance, or cable strain can create bearing stress, repeatability drift, or intermittent feedback faults under vibration.

Wiring & Installation

Before replacement, record the radial M27 26-pin wiring for Bit 1–14, Latch, DIR, power supply, GND, and shield. Confirm that the controller reads Gray code directly or converts it correctly in PLC logic, and verify whether the latch input is fixed, pulsed, or synchronized with the controller scan cycle.

During installation, align the ø6 mm shaft coupling without axial force and keep the clamp flange square to the mounting surface. Route the parallel signal cable away from inverter and motor power wiring, maintain shield continuity through the M27 connector, and avoid ground loops between the encoder housing, machine frame, and controller earth. After startup, verify zero/reference value, counting direction, bit transition stability, latch response, multiturn counting, wrap behavior, and repeatability over several machine cycles.

Custom Compatible Solution

EncoderWorks can configure the replacement around the installed controller and mechanical interface:

• Match 10-bit singleturn plus 4-bit multiturn parallel Gray-code position output and push-pull driver behavior
• Preserve Bit 1–14 mapping, latch input timing, DIR logic, supply range, and controller input compatibility
• Adapt the ø58 mm clamp flange, ø6 mm solid shaft, coupling interface, and radial M27 26-pin connector
• Review M27 shielding, grounding, EMC routing, Gray-code decoding, input threshold, coupling preload, and multiturn wrap behavior

Key Data