1. Basic Product Information

• Part Number: 5X00226G03

• Manufacturer: Emerson Automation Solutions (Former Westinghouse)

• Product Type: Conformal coated 8-slot I/O backplane base unit

• Compatible System: Ovation Distributed Control System

• Slot Capacity: 8 standard Ovation electronic I/O module slots

• Installation Mode: Fixed mounting inside standard 19-inch control cabinet

• Input Power: 24VDC system logic power supplied by cabinet power distribution unit

• Protection Grade: IP20 (cabinet internal installation); PCB with conformal coating for anti-corrosion, moisture-proof, dust-proof protection

• Maintenance Feature: Single I/O module hot swappable; no backplane power shutdown required for replacement

• Structure: Integrated backplane bus + independent branch fuse power distribution terminals, standard FRU spare part

• Origin: United States

2. Core Technical Specifications & Functional Features

2.1 Bus & Power Supply Optimization

• Upgraded shielded differential backplane bus design, lower signal crosstalk, stable deterministic scan cycle, suitable for fast closed-loop PID regulation and SOE sequence event acquisition loops

• Each slot is equipped with independent fuse overcurrent protection; overload/short-circuit of one I/O module only isolates the corresponding slot power, without affecting other slots and overall bus communication

• Optimized internal power circuit with low voltage drop, stable 24VDC output even under full-load 8-module concurrent operation, strong anti-voltage fluctuation capability

• Standard unified power access terminal blocks, convenient centralized cabinet wiring and later circuit troubleshooting

2.2 Mechanical & Harsh Environment Upgrade (Core G03 Differentiation)

• Full PCB board conformal coating (three-proof coating): moisture-proof, anti-salt fog, anti-corrosive gas, anti-dust adhesion, effectively preventing PCB pin corrosion, leakage current and short-circuit faults in humid chemical plant cabinet environments

• Reinforced thickened aluminum alloy frame, strengthened shock-absorbing structure, higher vibration resistance than G02 version, applicable to fan vibration, equipment vibration frequent cabinet areas

• Precision guide rail + double locking buckle structure, reliable gold finger contact after repeated plugging/unplugging of I/O modules, avoiding poor contact caused by long-term vibration

• Full backward compatible with all Ovation standard I/O main modules and personality modules; multiple backplanes can be cascaded freely for I/O point expansion

2.3 Environmental & Reliability Indicators

• Operating Temperature Range: 0℃ ~ +60℃

• Storage Temperature Range: -40℃ ~ +85℃

• Relative Humidity: 5%–95% RH, non-condensing (coating allows long-term operation under high humidity near condensation)

• Complies with IEC 61000 series full EMC electromagnetic compatibility standards, strong immunity to strong electromagnetic interference from high-power frequency conversion equipment nearby

• Certified with CE, UL international industrial safety certifications

• Extended design service life, matching full lifecycle of Ovation complete set control equipment

2.4 Operation & Maintenance Advantages

• Modular split design; only the faulty single I/O module needs replacement during maintenance, no need to disassemble or replace the entire backplane

• Pin-to-pin interchangeable with G01/G02 backplanes, seamless direct substitution during old system renovation without cabinet reconstruction and wiring modification

• Unified spare part specification, convenient centralized inventory management for energy, chemical and offshore process enterprises

• Applicable to new harsh environment cabinet assembly, system expansion, old DCS system upgrade reconstruction and large-scale I/O point transformation projects

3. Application Fields