Emerson 1B30035H01 2-Slot I/O Base

The 1B30035H01 is a 2-slot standard I/O termination base for Emerson Ovation DCS, originally developed by Westinghouse. It provides mechanical mounting, power distribution and signal wiring terminals for Ovation analog/digital I/O modules, bridging field cables and the rack backplane bus. It supports both local and remote I/O cabinet layouts to shorten field wiring length for power plant boiler, turbine and auxiliary control loops.

This durable base assembly is a common maintenance spare for legacy thermal power and petrochemical Ovation control systems. It adopts anti-vibration industrial plastic housing with screw terminal blocks for stable wiring, and standardized backplane connectors to realize hot-swap compatible module replacement without rack power cut.

Main Specifications

• Brand: Emerson (Westinghouse); PN: 1B30035H01; Series: Ovation DCS I/O Termination Base
• Slot Capacity: 2 independent slots for installing Ovation standard I/O modules
• Terminal Rating: Max 250V AC/DC, 5A per channel, screw-type wiring terminals
• Physical Size: 279 × 133 × 89 mm, net weight approx 0.88kg
• Mounting Mode: DIN rail or cabinet panel fixed installation
• Operating Environment: -10℃ ~ +60℃ working temp, -40℃ ~ +85℃ storage, 5%–95% RH non-condensing, IP20
• Compatibility: Matches all Ovation analog input, digital input/output standard I/O modules
• Mechanical Performance: IEC 60068-2 vibration resistance, anti-corrosion industrial housing
• Certifications: CE industrial EMC certification, power industry control standard compliant

Core Functions

• Offer physical installation carrier for dual I/O modules, integrate field signal terminals and system backplane bus interfaces.
• Distribute rack 24VDC power supply to inserted I/O boards, and conduct isolated transmission of field analog/digital signals.
• Support remote I/O cabinet deployment, greatly reducing long-distance field cable consumption and lowering signal interference risks.
• Standardized rear bus connector ensures seamless communication between I/O modules and Ovation controllers.
• Modular split design allows independent replacement of base or I/O modules, convenient for on-site maintenance and troubleshooting.
• Integrated terminal isolation barrier prevents cross-channel signal crosstalk, improving stability of process measurement and interlock signals.

Application Scenarios

• I/O base spare replacement for Emerson Ovation DCS cabinets in coal-fired power plants, combined cycle and hydropower auxiliary control systems.
• Termination base spare parts for petrochemical refineries, chemical reactor and oil & gas pipeline process control rooms.
• Maintenance backup inventory for pulp & paper mills, metallurgical heating furnaces and municipal waste incineration power stations.
• Matching installation accessory paired with Ovation analog input, digital I/O modules and redundant rack power supplies.
• Retrofit replacement components for aging control cabinets suffering terminal aging, loose wiring and signal crosstalk faults.

• Global aftermarket spare stock for automation maintenance teams managing legacy Westinghouse/Emerson Ovation distributed control equipment worldwide.