Product Overview
The Westinghouse 5X00357G04 is a Compact Sequence of Events (SOE) Events Input Contact Module designed for the Ovation™ distributed control system originally developed by Westinghouse and now supported under Emerson’s process automation portfolio. Built to the EMOD (Enhanced Modular Object) architecture, the module provides sixteen independent digital input channels that continuously monitor the open or closed state of field contacts, relay outputs, and discrete sensors, recording each transition with the time resolution required for post-event analysis in safety-critical and high-availability processes. Its role within the Ovation I/O family is distinct from ordinary discrete input cards: rather than simply presenting current contact states to the controller, the Westinghouse 5X00357G04 captures, time-stamps, and buffers transient events so that the exact order in which field devices changed state is preserved for root-cause investigation.
Functionally, each channel of the 5X00357G04 is interrogated every 125 microseconds, and an onboard four-millisecond debounce filter rejects contact bounce and spurious glitches before they are committed to the event buffer. The module supports per-channel event-tagging masks written by the Ovation Controller, along with an integrated chatter-control mechanism that limits event flooding when a contact is unstable. Combined with 48 VDC on-card wetting voltage and CE-mark compliance, these characteristics make the module equally suitable for new Ovation installations and for extending the service life of legacy WDPF and Ovation power-plant installations.
For asset owners, the value of the Westinghouse 5X00357G04 lies in the combination of millisecond-class event resolution, deterministic data capture, and seamless integration with the Ovation control ecosystem. Held as a strategic spare, it protects the historian and alarm-analysis functions that plant engineers depend on after trips, startups, and abnormal process excursions.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 5X00357G04 |
| Manufacturer | Westinghouse / Emerson (Ovation™ product line) |
| Product Type | Compact Sequence of Events (SOE) Events Input Contact Module |
| Number of Input Channels | 16 independent digital contact inputs |
| Channel Scan Interval | Every 125 microseconds |
| Debounce Filter | Rejects state changes shorter than 4 milliseconds |
| On-Card Input Voltage | 48 VDC (wetted contact supervision) |
| Electrical Rating | 50 mA @ 24 VDC |
| Chatter Control | Per-channel counter, up to 4 events between buffer reads; 100 ms auto-decrement option |
| Event Tagging | Per-channel mask written by Ovation Controller |
| Compatibility | Ovation and WDPF DCS, EMOD architecture |
| Dimensions (W × H × D) | 12.1 × 5.2 × 16.5 cm |
| Weight | 0.32 kg |
| Operating Temperature | -40 °C to +85 °C |
| Compliance | CE Mark certified |
