Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 5X00226G01 |
| Manufacturer | Westinghouse (now Emerson Ovation heritage) |
| Product Type | I/O Interface Module (Mixed-Signal DCS Card) |
| Compatible Systems | Emerson Ovation DCS, Westinghouse WDPF, MAX1000 |
| Digital Inputs | 16 channels, 24 V DC, sink/source configurable |
| Digital Outputs | 8 channels, transistor, 24 V DC, 0.5 A per channel |
| Analog Inputs | 4 channels, configurable 0–10 V / ±10 V / 0–20 mA / 4–20 mA |
| Analog Resolution | 12-bit |
| Signal Conditioning | Hardware RC filtering, transient suppression |
| Communication Bus | Ovation proprietary I/O backplane bus |
| Field Power Supply | 24 V DC nominal |
| Logic Power Supply | 5 V DC (from rack backplane) |
| Power Consumption | ~5 W typical |
| Isolation | 500 Vrms channel-to-channel; galvanic isolation to system bus |
| Hot-Swap Support | Yes — online replacement without rack shutdown |
| Redundancy | Supported in paired/redundant I/O architectures |
| Mounting | Ovation I/O rack slot / DIN-rail carrier |
| Dimensions (H×W×D) | 150 × 150 × 40 mm |
| Weight | 0.36 kg |
| Operating Temperature | -20°C to +70°C (configurations up to -40°C to +70°C) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Shock Resistance | 10g, 11 ms |
| Certifications | CE, UL listed |
| Country of Origin | USA |
| Keying | Dual keying posts (positions A–F and 1–6) prevent misinsertion |
| Diagnostics | Built-in status LEDs, self-diagnosis, fault alarm |
Main Features and Advantages
Consolidated mixed-signal I/O in a single slot: The Westinghouse 5X00226G01 packs 16 digital inputs, 8 digital outputs, and 4 analog inputs onto one compact card — replacing what would traditionally require three separate I/O modules. This consolidation directly translates into freed rack slots, reduced wiring terminal blocks, simplified cabinet layout, and lower total installed cost. For retrofit projects where rack real estate is constrained, the Westinghouse 5X00226G01 is often the only viable path to adding new field points without expanding the cabinet.
Galvanic isolation for noise immunity: Every channel on the Westinghouse 5X00226G01 is galvanically isolated at 500 Vrms channel-to-channel and from the system backplane bus. This isolation eliminates ground loop currents, rejects electrical transients from nearby switchgear and variable-frequency drives, and protects both the field wiring and the controller from cascading faults. Hardware-based RC filtering on input channels further suppresses high-frequency noise, ensuring signal integrity even in electrically hostile environments such as power plant switchyards and petrochemical process areas.
Hot-swappable maintenance with zero process interruption: The Westinghouse 5X00226G01 is fully hot-swappable — it can be extracted and replaced online without powering down the Ovation I/O rack. In redundant I/O configurations, the standby module seamlessly assumes control during replacement, delivering bumpless continuity for critical loops. This capability is transformative for 24/7 continuous-process facilities where every minute of downtime carries severe financial and safety penalties.
Deterministic millisecond-level response: Communicating over the Ovation proprietary backplane bus, the Westinghouse 5X00226G01 delivers deterministic, millisecond-level signal acquisition and output update timing. This predictability is essential for safety-critical applications such as turbine control, burner management, and emergency shutdown systems, where control loop latency directly impacts plant safety and regulatory compliance.
Dual personality module compatibility: The Westinghouse 5X00226G01 interfaces with Ovation I/O base units and personality modules, allowing the same card to adapt to different signal configurations — redundant AI 8-channel, AI 16-channel, AO 8-channel, AO 16-channel, or DI/DO 32-channel terminal blocks. This flexibility future-proofs the module across diverse field device requirements without hardware changes.
Rugged industrial construction: Built to Westinghouse’s legendary power-industry standards, the Westinghouse 5X00226G01 withstands operating temperatures from -20°C to +70°C, shock loads up to 10g, and the constant vibration characteristic of turbine decks and compressor stations. Its robust PCB construction, industrial-grade components, and dual redundant power input capability ensure continuous operation during partial power failures — a non-negotiable requirement in nuclear and fossil fuel power generation.
Intuitive built-in diagnostics: The Westinghouse 5X00226G01 incorporates onboard status LEDs, continuous self-diagnosis, and fault alarm reporting via the Ovation controller. Channel-level diagnostics monitor signal quality, alerting operators when voltage levels drift below operational thresholds — enabling predictive maintenance that catches sensor degradation before it impacts process quality. This diagnostic depth has proven particularly valuable in chemical processing plants where undetected sensor drift could compromise product quality or safety.
Seamless legacy system integration: The Westinghouse 5X00226G01 maintains backward compatibility with legacy WDPF control architectures while fully supporting modern Ovation DCS deployments. Its modular design allows seamless replacement in existing WDPF cabinets without requiring full system overhauls — making it the ideal spare part for life-extension programs on aging but still-productive DCS installations. The module’s dual-port communication interface supports both Modbus RTU and proprietary Westinghouse protocols, ensuring smooth data exchange with HMIs, SCADA systems, and third-party PLCs such as Siemens S7-400 and Allen-Bradley ControlLogix through protocol conversion gateways.
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