We developed a custom solution for model OCE-S101G-1212-E14W-HFZ. Selected when multi-turn absolute feedback is required via SSI with preset, using a 78 mm ATEX blind hollow structure with 14 mm shaft, in Zone 1 & 21 oil and gas environments. Typical production lead time: 15 working days. The referenced configuration combines 12-bit single-turn resolution, 12-bit multi-turn resolution, Gray code, and a mechanical gear train without battery.
Key Specifications
- Interface: SSI with preset
- Output driver: RS422
- Resolution: 12-bit single-turn + 12-bit multi-turn
- Code: Gray
- Multi-turn: mechanical gear train, no battery
- Supply: 4.5–30 VDC
- Protection: IP66/IP67 shaft and housing
- Structure: 78 mm ATEX blind hollow, 14 mm shaft, 30 mm depth
- Speed: up to 3000 rpm
- Approval: CE + ATEX Zone 1 & 21 (Oil+Gas)
Decision Snapshot
- Best for: hazardous-area SSI positioning systems needing battery-free multi-turn retention
- Key fit: 12-bit
- Avoid if: the project requires Ethernet networking, fieldbus diagnostics, or a non-hazardous low-complexity package, because this version is built around SSI timing, preset logic, and ATEX-certified mechanics.
Custom Solution Photos
Encoder structure reference: 78 mm ATEX blind hollow flange, 14 mm shaft, radial sealed outlet layout.
Signal & Output Architecture
The interface is SSI with preset and RS422 output, with cycle time from 25 µs and clock speed from 100 kHz to 2 MHz. The signal plan includes DIR, Preset, Clock±, and Data±.
Primary integration value: deterministic point-to-point absolute transmission without network configuration overhead.
Primary limitation: timing discipline and receiving-device compatibility matter more than cable count. This is not a bus-based device; it depends on correct clock/data handling and proper preset logic.
Mechanical & Installation Focus
This version uses stainless-steel V4A / 316L housing and flange, 14 mm blind hollow shaft, 30 mm insertion depth, and shaft load ratings of 60 N axial / 80 N radial. Maximum speed is 3000 rpm, and published static/dynamic misalignment limits are ±0.3/±0.5 mm and ±0.1/±0.2 mm.
Primary mechanical value: hazardous-area approval with corrosion-resistant stainless construction.
Primary mechanical constraint: blind-hollow alignment still governs long-term stability. Hazardous-area certification does not reduce the need for correct shaft tolerance, insertion depth, and alignment quality.
Wiring & Installation
The radial sealed outlet layout exposes GND, Power Supply, DIR, Preset, Clock±, and Data±. Startup time is listed below 1 second. Primary commissioning risk is SSI timing or preset setup rather than sensor behavior. Practical startup order is power → clock/data integrity → direction/preset logic → controller scaling.
Integration & Compatibility
- Designed for SSI absolute encoder systems in Zone 1 & 21 oil and gas environments
- Matches 78 mm ATEX blind hollow installations with 14 mm shaft
- Suitable for multi-turn feedback where hazardous-area approval and point-to-point SSI communication are both required
- Not suitable for Ethernet or fieldbus architectures
Lead Time
Typical production lead time: 15 working days. Custom adaptation can be developed around shaft fit, cable entry, hazardous-area installation, and SSI integration requirements.
Key Technical Data
| Item | Data |
|---|---|
| Model | OCE-S101G-1212-E14W-HFZ |
| Interface | SSI with preset |
| Output driver | RS422 |
| Type | Absolute multi-turn |
| Sensing | Optical |
| Resolution | 12 bit + 12 bit |
| Code | Gray |
| Multi-turn | Mechanical gear train |
| Supply | 4.5–30 VDC |
| Protection | IP66/IP67 |
| Approval | CE + ATEX Zone 1 & 21 |
| Flange | 78 mm ATEX blind hollow |
| Shaft | 14 mm |
| Depth | 30 mm |
| Speed | 3000 rpm |
