OCD-EEC1B-0016-B12A-PSM EtherCAT Absolute Encoder, 16-bit

We developed a custom solution for model OCD-EEC1B-0016-B12A-PSM. Selected when high-resolution single-turn absolute feedback is required via EtherCAT, using a 58 mm blind hollow structure with 12 mm shaft, without adding multi-turn retention or parallel signal mapping. Typical production lead time: 15 working days. The referenced configuration is an optical EtherCAT version with 16-bit single-turn resolution, binary code, 10–30 VDC supply, and three radial M12 connectors.

Key Specifications

• Interface: EtherCAT
• Resolution: 16-bit
• Code: Binary
• Supply: 10–30 VDC
• Protection: IP65 shaft side, IP54 housing
• Structure: 58 mm blind hollow, 12 mm shaft, 30 mm depth
• Connection: radial + 3 rotary switch, 3 × M12
• Speed: up to 12000 rpm
• Sensing: optical
• Diagnostics: Error and Warning Bits

Decision Snapshot

• Best for: EtherCAT single-turn absolute positioning with compact blind-hollow installation
• Key fit: 16-bit
• Avoid if: the system requires multi-turn retention, analog output, or non-EtherCAT communication, because this model is built around Ethernet-based absolute transmission with CIP-style network parameters replaced here by EtherCAT network integration and M12 topology.

Custom Solution Photos

Encoder structure reference: 58 mm blind hollow flange, 12 mm shaft, radial M12 EtherCAT connector layout.

Bus Configuration & Communication

The interface is EtherCAT with 100 Mbit transmission, cycle time from 1 ms, and programmable functions including resolution, time base and filter for velocity, preset, counting direction, parameter control priority, and IP address. The page also lists boot-loader, round axis, DLR, velocity, acceleration, and temperature values under communication features, plus error and warning bits for diagnostics.

Primary integration value: network-based absolute position feedback without multi-line parallel mapping.
Primary risk: network recognition, topology setup, or port configuration errors rather than sensor-side instability.
Best practice: power → port continuity → network recognition → controller mapping. That order follows from the published M12 D-coded/A-coded connector layout and EtherCAT communication structure.

Mechanical & Installation Focus

This version uses a steel housing with cathodic corrosion protection plus paint, aluminum blind-hollow flange, 12 mm stainless shaft, 30 mm insertion depth, and published static/dynamic misalignment limits of ±0.3/±0.5 mm and ±0.1/±0.2 mm. Maximum mechanical speed is 12000 rpm.

Primary mechanical constraint: blind-hollow alignment at high shaft speed.
Primary installation value: compact shaft package with Ethernet communication.
At 12000 rpm, shaft tolerance, insertion depth, and concentricity matter more than housing size. Poor alignment will usually appear first as vibration, bearing stress, and unstable field behavior rather than instant startup failure. That is an engineering judgment grounded in the published speed and misalignment data.

Wiring & Bus Topology

The electrical layout uses three radial M12 connectors: Interface 1 is M12 female 4-pin D-coded, Interface 2 is M12 male 4-pin A-coded, and Interface 3 is M12 female 4-pin D-coded. The connection plan assigns Tx+/Rx+/Tx-/Rx- on the Ethernet ports and Power Supply/GND on the power connector. Startup time is listed below 15 seconds.

Primary commissioning issue: Ethernet-side setup, not sensing stability.
Most startup faults on this structure come from network recognition or mapping, not the encoder core itself. That conclusion is supported by the published connector plan and communication feature set.

Integration & Compatibility

• Designed for EtherCAT absolute encoder systems
• Matches 58 mm blind hollow installations with 12 mm shaft
• Suitable for single-turn feedback where distributed network communication is required
• Not suitable for multi-turn systems or non-EtherCAT architectures

Lead Time

Typical production lead time: 15 working days. Custom adaptation can be developed around shaft fit, connector layout, and network integration requirements.

Key Technical Data