Emerson 1C31222G01 Ovation DCS relay digital output module, equipped with built-in power relays, provides dry contact switch outputs for interlock circuits, valve actuation and equipment control, widely used spare part for thermal power plant Ovation control system.

Product Overview

• Part No: 1C31222G01
• Brand: EMERSON / Westinghouse Ovation

• Category: 12-Channel Relay Digital Output Module 1C31222G01 is a relay-type digital output module for Emerson Ovation distributed control system. The module integrates 12 independent electromagnetic relays, receiving digital control commands from Ovation controller and outputting isolated dry contact signals to drive field equipment. Each channel provides passive contact outputs without internal power supply, supporting flexible matching of external AC/DC field power circuits. Galvanic isolation exists between the DCS backplane logic circuit and field contact loops to prevent surge and ground loop interference from damaging main control hardware. Hot-swap function supports online replacement without system shutdown. Front panel LED indicators display module operating state and each channel on/off status for rapid on-site fault diagnosis. It serves as key maintenance spare for boiler and turbine sequence control, equipment interlock, solenoid valve and auxiliary motor control loops in power plants.

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Core Features

• 12 independent channels with built-in electromagnetic relay dry contact outputs
• Passive contact design, adaptable to external AC/DC field power supply
• Complete electrical isolation between control side and field side circuits
• Supports sequence control logic, equipment interlock and solenoid valve driving
• Hot-swap capable for online maintenance without interrupting system operation
• Comprehensive self-diagnosis function for module hardware failure detection
• Front panel LED status indicators for module running and individual channel state
• Standard plug-in structure matched with Ovation I/O rack base assembly
• Industrial hardware design that meets strict EMC standards for power station environments

• Optimized contact material to extend service life under frequent switching conditions

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Technical Specifications

• Output Channels: 12 relay channels
• Output Type: Isolated dry contact
• Contact Rating: Max 250VAC / 30VDC, rated current per contact
• Isolation: Galvanic isolation between backplane and field circuits
• Power Supply: Powered via Ovation rack backplane
• Operating Temperature: -20°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Mounting: Ovation standard I/O rack slot installation

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Fully compatible with Emerson Ovation DCS controllers, I/O racks and supporting base assemblies
• Widely deployed in thermal power plants, combined-cycle power stations and petrochemical facilities
• Applied for auxiliary motor control, solenoid valve actuation, breaker interlock and sequential equipment control