OCD-PPA1G-0710-SA10-PRT Parallel Encoder with M27 Bit Mapping

For OCD-PPA1G-0710-SA10-PRT, EncoderWorks can provide a custom compatible replacement solution for parallel absolute feedback systems where the key checks are 17-bit Gray-code mapping, latch timing, DIR input behavior, M27 26-pin wiring, and ø6 mm solid-shaft coupling. This model should not be treated like a cable-output or hollow-shaft encoder, because the controller reads each position bit through the connector pinout and may depend on the latch and direction inputs during sampling. Typical production lead time: 15 working days.

This configuration is used where a controller requires direct Bit Parallel absolute position data rather than a serial or fieldbus interface. The encoder combines 10-bit singleturn resolution, 7-bit multiturn mechanical gearing, Gray code output, push-pull driver behavior, a ø58 mm synchro flange, ø6 mm solid double-flat shaft, and a radial M27 26-pin male connector. Replacement work should focus on bit order, active logic level, latch signal timing, DIR setting, connector assignment, coupling alignment, and shield continuity.

System Limits

The first system limit is bit mapping. The controller must read Bit 1 through Bit 17 in the same order as the original wiring. If one bit is shifted, inverted, or assigned to the wrong input, the machine may still move but report discontinuous or incorrect absolute position.

The second limit is latch and DIR behavior. The latch input must match the controller’s sampling window, and the DIR input must preserve the expected counting direction. If the latch window is too short or the direction logic is reversed, the position value can jump during motion or after power-up.

The mechanical limit is the ø6 mm solid double-flat shaft and synchro flange. Coupling misalignment, axial preload, or radial load can create bearing stress, repeatability loss, or signal instability under vibration.

Wiring & Installation

Before replacement, record the existing M27 26-pin connector wiring for Bit 1–17, Latch, DIR, power supply, and GND. Confirm whether the controller expects Gray code directly, whether any external pull-up or filtering is used, and how the latch input is triggered during the PLC scan or motion cycle.

During installation, align the ø6 mm shaft coupling without axial force and keep the synchro flange square to the mounting surface. Route the parallel signal cable away from inverter and motor power wiring, keep the connector shield continuous, and avoid ground loops between the encoder housing, machine frame, and cabinet earth. After startup, verify zero/reference value, counting direction, bit transition stability, latch response, 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 7-bit multiturn parallel Gray-code position output
• Preserve Bit 1–17 mapping, latch input behavior, DIR logic, and push-pull driver compatibility
• Adapt the ø58 mm synchro flange, ø6 mm solid double-flat shaft, coupling, and radial M27 26-pin connector
• Review cable shielding, connector grounding, EMC routing, controller input threshold, and sampling timing

Key Data