OCD-PPA1G-0710-SB90-CRW Parallel Encoder with 17-Bit Mapping

For OCD-PPA1G-0710-SB90-CRW, EncoderWorks can provide a custom compatible replacement solution for bit-parallel multiturn absolute feedback systems where the key checks are 17-bit position mapping, latch timing, DIR logic, and ø10 mm solid-shaft coupling. This model combines 10-bit singleturn and 7-bit multiturn data, so the replacement must be checked across more than one revolution, not only within one shaft turn. Typical production lead time: 15 working days.

This encoder is used where a PLC input card, counter module, or legacy controller reads absolute position through individual digital conductors instead of SSI, CANopen, or Profibus. Replacement work must confirm the complete parallel bit structure, push-pull signal level, Gray-code interpretation, multiturn bit order, latch behavior, direction input, radial cable exit, synchro flange seating, and shaft coupling alignment.

System Limits

The main electrical limit is multiturn bit mapping. The controller reads both the 10-bit singleturn value and the 7-bit multiturn value through separate parallel lines. If a multiturn bit is swapped, ignored, or connected to the wrong input, the position may look correct within one revolution but become wrong after the shaft crosses a turn boundary.

Latch timing is the second failure boundary. If the PLC samples the parallel lines while the shaft is moving through a transition point, it may capture a false value. This is more serious on multiturn feedback because the error can affect the absolute travel position, not only the angle inside one revolution.

The mechanical limit is the ø10 mm solid shaft and synchro flange interface. The coupling must be aligned without radial force, axial preload, or flange distortion. Shielding and cable routing should also be reviewed because parallel conductors are sensitive to noise from inverter, motor, brake, or solenoid wiring.

Wiring & Installation

Before removing the existing encoder, record the full cable assignment for Bit 1 through Bit 17, Latch, DIR, supply, and GND. The replacement should be wired by function rather than by assumed color order.

After wiring, rotate the shaft slowly and confirm that the controller value changes smoothly in the expected direction. Then check the multiturn count across more than one revolution. If the application uses travel limits, indexing stops, or position-based interlocks, verify those switching points again after mechanical zero alignment.

Custom Compatible Solution

EncoderWorks can configure the replacement around the installed machine requirements:

• Match bit-parallel output, push-pull voltage level, Gray-code reading, and controller input mapping
• Verify 10-bit singleturn and 7-bit multiturn value behavior before shipment
• Adapt the ø58 mm synchro flange, ø10 mm solid shaft, radial cable exit, and 1 m cable length
• Review latch, DIR, shielding, grounding, and shaft-coupling load for stable operation

Key Data