Emerson 1C31234G01 Ovation DCS 32-channel digital input module, 48VDC wetting contact input card for collecting on-off status signals, widely used maintenance spare for power plant control systems.

Product Overview

• Part No: 1C31234G01
• Brand: EMERSON / Westinghouse Ovation

• Category: 32-Channel Digital Input Module 1C31234G01 is a 32-channel digital input module designed for Emerson Ovation distributed control system. It provides 48VDC wetting voltage to collect binary status signals from field dry contacts including limit switches, relay contacts and equipment position feedback. The channels are divided into four groups of eight channels with group-level fault monitoring. Optoelectronic isolation is adopted between field circuits and internal control bus to suppress electromagnetic interference. The module supports hot swapping for online replacement without shutting down the system. Front panel LED indicators display each channel status and group fault alarms to facilitate rapid on-site troubleshooting. It serves as essential spare part for boiler, turbine and auxiliary equipment monitoring loops in thermal power plants.

• 
  

Core Features

• 32 independent digital input channels grouped into four sets of eight channels
• Built-in 48VDC wetting power supply for dry contact field devices
• Opto-electrical isolation between field side and internal logic circuit
• Programmable input filter time to eliminate contact bounce interference
• Hot-swap capable for online maintenance without system interruption
• Channel-by-channel LED status indicators and group fault diagnosis
• Standard plug-in design for Ovation I/O rack, convenient installation and replacement

• Industrial-grade hardware complying with strict EMC requirements for power station environments

• 
  

Technical Specifications

• Input Channels: 32 channels
• Input Type: Dry contact, 48VDC wetting
• Nominal Wetting Voltage: 48 VDC
• Response Time: ≤10ms with configurable software filter
• Power Supply: Powered via Ovation rack backplane
• Operating Temperature: -20°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Mounting: Ovation standard rack slot installation

• Protection Class: IP20 when installed inside control cabinet

• 
  

Compatibility & Application

• Fully compatible with Emerson Ovation DCS racks and matching controller hardware
• Widely deployed in thermal power plants, combined-cycle power stations and water treatment facilities
• Used for acquiring equipment running status, limit signals, breaker position and interlock contact feedback