Emerson 1C31129G03 Ovation DCS 8-channel relay output module, contact type digital output spare card for power plant boiler and turbine control systems.

Product Overview

• Part No: 1C31129G03
• Brand: EMERSON / Westinghouse Ovation

• Category: 8-Channel Relay Output Module 1C31129G03 is an 8-channel relay output module designed for Emerson Ovation distributed control system. The module receives digital commands from the Ovation controller and drives built-in mechanical relay contacts to switch external field circuits. It achieves complete electrical isolation between internal control logic and field loads, suitable for driving solenoid valves, auxiliary relays, alarm horns and motor control loops. Each channel supports AC and DC load switching. The module supports hot swapping, allowing online replacement without system shutdown. Front panel LED indicators display module operating status and individual channel state for rapid on-site troubleshooting. It is a commonly used maintenance spare for overhaul and renovation of thermal power plant automation systems.

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Core Features

• 8 independent relay contact output channels
• Full galvanic isolation between control side and field circuit to resist interference
• Supports switching of AC/DC loads for on-off control of field equipment
• Hot-swap capable, online replacement without power interruption
• Built-in channel status monitoring and module self-diagnosis
• Front panel LED indicators for module health and each channel status
• Standard Ovation rack plug-in structure for quick installation

• Industrial hardware design, meeting strict EMC requirements for power station environments

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Technical Specifications

• Output Channels: 8 relay contact channels
• Contact Type: Form A normally open contact
• Form Factor: Ovation standard rack plug-in module
• Powered through Ovation rack backplane
• Operating Temperature: -20°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with Emerson Ovation DCS racks and corresponding controller hardware
• Widely used in thermal power plants, combined-cycle power stations and industrial process control
• Used for equipment start-stop control, interlock circuit driving, fault alarm output of boiler and turbine auxiliary systems