Description
Product Overview
The Emerson 5X00357G04 is a 16-channel event contact input EMOD module for the Ovation distributed control system. It captures dry contact or wet DC switch signals from field limit switches, breaker auxiliary contacts and trip devices, with high-resolution timestamping for sequence-of-events (SOE) logging. The module sends state change and time stamp data back to the Ovation controller for fault analysis and trip reconstruction. OEM production has ended; available stock consists of surplus or refurbished tested replacement units for power generation, turbine and boiler protection DCS racks.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 5X00357G04 |
| Manufacturer | Emerson (Westinghouse Ovation) |
| Module Type | Event Input Contact EMOD / SOE Digital Input |
| Channel Count | 16 channels |
| Input Type | Dry contact closure or 24VDC wet contact |
| Wetting Voltage | 24VDC nominal |
| Per-channel input current | ≤2mA typical |
| SOE Timestamp Resolution | 1ms |
| Response time | ≤10ms |
| Isolation | 2000V channel-to-backplane, 500V channel-to-channel |
| Backplane Supply | 24VDC |
| Power Draw | 3W typical, 5W max |
| Operating Temperature | -20°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Mounting | Ovation standard EMOD rack slot |
| Weight | 320g |
Engineer Notes
- This is a complete EMOD module; no separate personality card is required. Hot-swap is supported when site lockout/tagout procedures permit.
- Front panel LEDs show module health and per-channel contact status. The module detects wire break and open-circuit conditions for field contact wiring.
- SOE functionality relies on accurate time synchronization across the Ovation system. Verify controller and I/O rack time sync after module replacement to avoid timestamp errors.
- Use shielded twisted pair for field contact wiring. Keep contact cables separated from high-voltage AC power runs to reduce induced noise and false contact transitions.
- Dry contact circuits require careful wiring to prevent leakage current from triggering false states. Check for ground loops when mixing dry and wet contact points on the same rack.
- Apply ESD controls during handling. De-energize rack power if hot swap is not approved. After installation, validate channel state changes and SOE timestamp capture for all 16 points.
Pre-Shipment Test Protocol
- Visual inspection: Check PCB assembly, edge connector, front panel and LED windows for bent pins, corrosion or component damage.
- Continuity and isolation test: Verify isolation between each input channel and backplane bus.
- Functional bench test: Connect dry contact simulator to each channel, trigger open/close transitions, confirm channel status updates and captured timestamps.
- Fault simulation: Inject open wire and noisy contact signals, confirm module logs wire-break diagnostics without spurious state changes.
- Power cycling: Cycle backplane power 10 times, confirm channel states and SOE capture resume correctly after each restart.
- Save test logs and photos for QA records.
Buyer FAQ
Q: Can I replace older revision 5X00357Gxx directly with G04? A: Mechanical form factor matches. Confirm Ovation controller firmware and SOE database configuration. Some older revisions use different point definitions and timestamp handling.
Q: Does this module supply wetting voltage for dry contact inputs? A: Yes, it provides 24VDC wetting voltage for contact sensing. External wetting supply is not required for dry contact field devices.
Q: Is this new original Emerson factory stock? A: OEM production has stopped. Available units are surplus or fully refurbished tested stock. We offer a 12-month warranty on tested units.
Q: Are terminal blocks included? A: Terminal blocks are not included unless explicitly noted on your quote. Confirm terminal assembly availability at order placement.
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