1. Basic Product Information

• Part Number: 5X00241G04

• Manufacturer: Emerson Automation Solutions (Former Westinghouse Electric)

• Product Type: OCR400 high-performance redundant CPU processor module

• Compatible System: Ovation Distributed Control System

• Installation Mode: Slide-in pluggable installation into standard Ovation controller rack dedicated slots

• Redundancy Configuration: Dual-module A/B hot redundant pairing, disturbance-free automatic failover

• Hot Swap Support: Hot-swappable under redundant running state, no full unit shutdown required for single module replacement

• Origin: United States

• Protection Grade: IP20 (cabinet interior mounting); full PCB conformal coating (moisture-proof, salt-fog resistant, anti-corrosion, dust-proof)

• Structure: Standard FRU field replaceable unit

• Power Supply: Dual redundant 24VDC backplane bus power supply access

2. Core Technical Specifications & Key Upgrade Highlights (Compared with G01/G02)

2.1 Computing & Storage Capacity Upgrade

• Higher-frequency industrial-grade dedicated processor, minimum configurable control scan cycle shortened to 5ms, ideal for ultra-fast closed-loop control loops

• Max expanded memory: 512MB RAM + 2GB onboard Flash storage, supports over 60,000 originated I/O points, capable of loading complex advanced control algorithms, multiloop predictive control and large-scale sequential logic sheets

• Up to 8 independent configurable real-time control tasks; preset fixed fast scan cycles (100ms, 1s), other tasks adjustable in 5ms increments ranging from 5ms to 30s

2.2 Enhanced Multi-Port Communication Architecture

• Onboard quadruple independent 10/100/1000Mbps adaptive Ethernet ports, flexible hardware options: all-RJ45 copper ports or mixed RJ45+SFP fiber optical ports for long-distance redundant ring network deployment

• Optimized dedicated local backplane bus controller chip, lower I/O data transmission latency and jitter, stable deterministic cycle scanning for massive I/O racks

• Independent local diagnostic maintenance port, supports offline firmware upgrade, control logic download, fault log export and hardware troubleshooting without occupying system operation network

2.3 Harsh Environment & Reliability Upgrades (Core G04 Differentiator)

1. Full PCB conformal three-proof coating: effectively resists high humidity, coastal salt fog, corrosive gas and dust accumulation inside cabinets, avoiding PCB trace corrosion and leakage current faults, applicable to chemical plants, offshore platforms and coastal power stations

2. Dual redundant 24VDC power input circuit with anti-reverse polarity, surge absorption and undervoltage/overvoltage lockout protection, eliminating single power supply failure risk for the controller itself

3. Upgraded multi-stage hardware watchdog + triple data checksum verification mechanism; fault log storage depth expanded, accurate recording of historical abnormal events for post-fault analysis

4. Reinforced electromagnetic isolation between core computing circuit and I/O backplane bus, further improved immunity to strong electromagnetic interference from nearby frequency converters and high-power equipment

2.4 Electrical & Environmental Parameters

• Rated operating power supply: Dual redundant 24VDC, typical power consumption 10–45W

• Operating temperature range: 0℃ ~ +60℃

• Storage temperature range: -40℃ ~ +85℃

• Relative humidity: 5%–95% RH, non-condensing; conformal coating allows long-term stable operation under near-condensation high humidity

• Fully compliant with IEC 61000 series industrial EMC standards, shock and vibration resistant

• Certified with CE, UL international industrial safety certifications

3. Compatibility & O&M Advantages

1. Complete backward compatibility: pin-to-pin fully interchangeable with G01/G02 modules, seamless direct substitution during system renovation, no rack modification, terminal rewiring or logic reconfiguration needed

2. Redundant hot backup architecture ensures zero disturbance to field regulating valves, motors and interlock equipment during master-slave switchover, meeting uninterrupted operation requirements for critical power unit control systems

3. Standard unified FRU spare part specification, convenient centralized spare parts inventory management for power, petrochemical and offshore process enterprises

4. Applicable to new high-reliability control cabinet assembly, system capacity expansion, legacy Ovation system upgrade and reconstruction, harsh environment control room retrofit projects

4. Application Fields