
Description
The Westinghouse 5X00357G04 is a high-speed events input contact module designed for the Westinghouse Ovation and WDPF distributed control systems, serving as the critical interface for Sequence of Events recording in power generation and industrial automation. This 16-channel digital input module provides millisecond-level time-stamping capability, enabling engineers to precisely reconstruct the chronology of events during system upsets and fault analysis.
Application Scenarios
Imagine a 600MW coal-fired power plant where a turbine trip occurs without warning. The operator urgently needs to know the exact sequence of events: Did the boiler flame-out happen before the overspeed trip, or was it the other way around? Without precise timing, disputes arise and root-cause analysis stalls. The Westinghouse 5X00357G04 solves this with its ≤1ms sampling cycle and 1ms time-stamp resolution—it captures the moment each breaker opens, each relay activates, and each safety interlock triggers, providing definitive forensic evidence that pinpoints the initiating event. In one documented case, a power plant using the 5X00357G04 reduced fault diagnosis time from days to hours and eliminated finger-pointing during post-trip investigations by delivering an irrefutable event log with millisecond precision.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 5X00357G04 |
| Manufacturer | Westinghouse (now Emerson Ovation) |
| Product Category | Events Input Contact Module / Enhanced Digital Input EMOD |
| System Compatibility | Ovation, WDPF II+, WDPF II |
| Input Channels | 16 independent digital input channels |
| Input Type | Dry contact / Wet contact configurable |
| Input Voltage | 12–48 VDC (48VDC nominal) |
| Sampling Period | ≤1ms |
| Time-Stamp Resolution | 1ms |
| Response Time | ≤1ms |
| Isolation | Channel-to-channel optical isolation, 1500VAC (or ≥2500VAC per some sources) |
| Communication Interface | Ovation/WDPF backplane bus |
| Operating Temperature | -40°C to +70°C (or 0°C to 60°C depending on configuration) |
| Dimensions | ~121 × 52 × 165 mm (single-slot) |
| Weight | ~0.32 kg |
| Hot-Swap | Supported |
| MTBF | >100,000 hours (estimated) |






