Model Matching & Compatibility Note

1. Original Westinghouse model: 4256A25G02

2. Emerson unified spare part code: 1C31025G05

3. Downward compatible: Direct replacement for 4256A25G01 / 1C31025G03, no system configuration modification required

4. Series derivative distinction:

   • 1C31025G04: Standard bandwidth version of G02

   • 1C31025G05: Enhanced stability version of G02 (widely stocked aftermarket model)

   • 1C31025G06: Ultra-high bandwidth version for super-large multi-rack systems

Technical Specifications

1. PCB Substrate: Multi-layer high heat-resistant FR-4 industrial circuit board

2. Operating Temperature Range: -25℃ ~ +75℃

3. Storage Humidity: 5%–90% RH, non-condensing

4. EMC Compliance: Industrial Class II, CE & LVD certified, conforms to EN 61000 series anti-interference standards

5. Bus Interface: Dedicated high-speed MRC link bus for Ovation remote racks

6. Channel Isolation: 1000V AC/DC galvanic isolation between field bus terminals and internal logic circuit

7. Built-in Protection: Surge suppression, overvoltage, overcurrent, reverse polarity, short-circuit protection

8. Installation Mode: Single-slot hot-swappable plug-in for standard Ovation DCS rack backplane

9. Quality Standard: Original Emerson/Westinghouse factory certified; each unit with independent factory inspection test report, 12-month official quality warranty

Application Fields

• Medium & large thermal power plant Ovation WDPF DCS distributed control systems

• Multi-unit regional petrochemical production remote I/O control cabinets

• Metallurgical factory full-process distributed production monitoring stations

• Large municipal wastewater multi-station automatic control systems

• Pulp & paper whole-plant remote signal acquisition racks

• Traditional heavy industry multi-rack redundant DCS central control rooms

• Energy chemical continuous production line remote monitoring automation platforms