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Product Overview

The WESTINGHOUSE 1C31224G01 is a field-wiring terminal interface module designed as an integral component of the Westinghouse Ovation™distributed control system(DCS),widely deployed in power generation,including fossil fuel,nuclear,and combined-cycle plants.Unlike active I/O cards that perform signal conditioning or conversion,the WESTINGHOUSE 1C31224G01 serves as a passive yet critical mechanical and electrical bridge between the Ovation I/O modules(such as DI,DO,AI,or AO cards)and the plant’s field instrumentation wiring.It provides a secure,organized,and serviceable point of connection using screw-type terminals,enabling efficient installation,troubleshooting,and maintenance without disturbing the core logic modules.

Positioned within the I/O chassis alongside compatible Ovation I/O cards(e.g.,1C311xx or 1C312xx series),the WESTINGHOUSE 1C31224G01 routes signals from the backplane through its internal printed circuit traces to clearly labeled terminal blocks on the front panel.This modular architecture allows technicians to disconnect field wiring during upgrades or diagnostics while leaving the intelligent I/O module seated—minimizing system downtime.The design incorporates features such as terminal labeling windows,strain relief for multi-conductor cables,and optional transient suppression circuits(depending on configuration),ensuring long-term reliability in electrically noisy environments typical of turbine halls or switchyards.As part of Westinghouse’s legacy—and now Emerson’s—Ovation ecosystem,the WESTINGHOUSE 1C31224G01 remains essential for sustaining operational continuity in thousands of mission-critical energy facilities worldwide.

Technical Specifications

Parameter Name Parameter Value

Product Model 1C31224G01

Manufacturer Westinghouse(now part of Emerson Automation Solutions)

Product Type Field Terminal Interface/I/O Baseplate Assembly

Compatible I/O Modules 1C311xx,1C312xx series(e.g.,1C31179G01 DI,1C31218G01 DO)

Terminal Type Screw-clamp,removable or fixed(depending on revision)

Number of Terminals Typically 32–64 points(varies by I/O module pairing)

Wire Range Supported 24–12 AWG stranded or solid copper

Isolation Voltage≥500 VAC(between field and system sides)

Operating Temperature-20°C to+70°C

Mounting DIN rail or chassis-mounted within Ovation I/O cabinet

Environmental Rating Designed for industrial indoor use;IP20 equivalent

Certifications Compliant with IEEE,ANSI,and nuclear-grade standards(e.g.,IEEE 323,IEEE 344 when used in qualified systems)

Main Features and Advantages

Modular field wiring architecture:The WESTINGHOUSE 1C31224G01 decouples field wiring from the intelligent I/O electronics,allowing maintenance personnel to reterminate,test,or replace field cables without removing the active I/O module from the backplane.This significantly reduces mean time to repair(MTTR)during outages or retrofits—a crucial advantage in 24/7 power generation environments.

Robust mechanical design:Constructed with flame-retardant thermoplastics and precision-machined terminal blocks,the WESTINGHOUSE 1C31224G01 withstands vibration,thermal cycling,and humidity common in turbine and boiler areas.Terminals are clearly labeled with channel IDs that match Ovation engineering documentation,minimizing wiring errors during commissioning.

Compatibility with safety-critical systems:When deployed in nuclear or fossil power plants,the WESTINGHOUSE 1C31224G01 often forms part of a qualified I/O string that meets seismic and environmental requirements per IEEE 323/344.Its passive nature contributes to high reliability,as there are no active components to fail under radiation or temperature stress.

Serviceability and diagnostics support:The open-front design provides unobstructed access to terminals for probing with multimeters or oscilloscopes.In conjunction with Ovation’s diagnostic tools,technicians can isolate faults to either the field side(wiring/sensor)or system side(I/O card/backplane)rapidly.Some variants include test points or fuse holders for added maintainability.

Seamless integration with Ovation ecosystem:The WESTINGHOUSE 1C31224G01 is mechanically and electrically engineered to match the pinout and form factor of specific Ovation I/O modules.This ensures plug-compatibility and preserves signal integrity across the entire I/O chain—from field device to controller logic.

Application Field

The WESTINGHOUSE 1C31224G01 is predominantly used in thermal power generation facilities where the Ovation DCS serves as the central nervous system for plant control and monitoring.In coal-fired power stations,it interfaces with boiler drum level switches,pulverizer status contacts,and soot blower limit switches—applications requiring reliable discrete signal termination in high-temperature environments.Nuclear power plants utilize the WESTINGHOUSE 1C31224G01 in safety-related I/O racks for reactor coolant pump status,containment isolation valve feedback,and emergency diesel generator start commands,where its qualification under nuclear standards ensures compliance with regulatory requirements.

Beyond traditional power,the module also appears in combined-cycle and waste-to-energy plants,connecting gas turbine fire detection relays,HRSG(Heat Recovery Steam Generator)pressure switches,and flue gas damper position sensors.In brownfield modernization projects,existing WESTINGHOUSE 1C31224G01 terminal assemblies are often retained while upgrading only the I/O electronics—leveraging the terminal block’s longevity to reduce rewiring costs.Because the Ovation platform remains widely supported by Emerson,the WESTINGHOUSE 1C31224G01 continues to be a vital spare part for asset managers seeking to extend the life of proven control infrastructure well into the 2030s.

Related Products

1C31179G01:32-channel digital input module that pairs with 1C31224G01 for switch/status acquisition

1C31218G01:16-channel digital output module commonly used with this terminal base

1C31228G01:Higher-density or fused variant of the terminal interface for specialized applications

1C31204G01:Analog input terminal assembly for 4–20 mA or thermocouple signals

1C31230G01:Redundant or seismic-qualified version for nuclear safety systems

OVATION I/O Chassis(e.g.,1C31001G01):Main rack that houses both I/O modules and terminal bases like 1C31224G01

1C31225G01:Similar terminal block with spring-clamp instead of screw terminals

Emerson OVATION eDNA:Modern data historian often integrated with legacy systems using 1C31224G01

Installation and Maintenance

Pre-installation preparation:Before installing the WESTINGHOUSE 1C31224G01,verify compatibility with the target I/O module(e.g.,1C31179G01)by cross-referencing Westinghouse bulletin drawings or Emerson documentation.Ensure the I/O chassis backplane is de-energized and properly grounded.Route field cables through gland plates with adequate strain relief,and strip conductors to the correct length(typically 6–8 mm)to avoid exposed copper beyond the terminal clamp.Torque screw terminals to manufacturer specifications(usually 0.5–0.6 Nm)to prevent loosening due to vibration.Label each wire according to I/O database tags to facilitate future troubleshooting.

Maintenance recommendations:During routine inspections,check the WESTINGHOUSE 1C31224G01 terminals for signs of corrosion,overheating(discoloration),or loose connections—especially in high-current DO circuits.Use infrared thermography during plant operation to detect abnormal heating at terminal points.If replacing a paired I/O module,confirm that the WESTINGHOUSE 1C31224G01 shows no physical damage or bent pins before reseating.Store spare units in static-dissipative packaging in a dry,climate-controlled environment to prevent terminal oxidation.Although passive,the integrity of this interface directly impacts system reliability—never overlook it during root cause analysis of intermittent I/O faults.

Product Guarantee

We guarantee that every WESTINGHOUSE 1C31224G01 terminal interface module we supply is authentic,sourced from decommissioned Ovation systems or verified OEM surplus channels.Each unit undergoes visual inspection for mechanical damage,terminal integrity,and label legibility,and is tested for continuity and isolation where applicable.The WESTINGHOUSE 1C31224G01 is backed by a 12-month warranty against defects in materials and workmanship,along with expert technical support from engineers experienced in Ovation DCS architecture.Our commitment ensures your legacy power plant control system remains maintainable,compliant,and operational—because in critical infrastructure,even passive components must perform flawlessly.

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Product Overview

The WESTINGHOUSE 1C31233G04​is a high-density digital input module designed for Westinghouse distributed control systems(DCS),providing reliable interface capabilities for industrial automation applications.This 32-channel digital input card serves as a critical component in process control systems,enabling the connection of various field devices such as limit switches,push buttons,and proximity sensors to the central control system.The WESTINGHOUSE 1C31233G04​module features advanced signal conditioning and isolation technology,ensuring accurate and reliable status monitoring of field devices even in electrically noisy industrial environments.Its robust design and high channel density make it particularly suitable for large-scale industrial facilities where space optimization and reliability are paramount concerns.

Engineered for continuous operation in demanding industrial settings,the WESTINGHOUSE 1C31233G04​incorporates multiple protection features including overvoltage protection,reverse polarity protection,and electromagnetic interference suppression.The module’s design follows industry standards for industrial control equipment,with conformal coating on the printed circuit board providing additional protection against humidity,dust,and corrosive atmospheres.The WESTINGHOUSE 1C31233G04​supports both sinking and sourcing field devices,offering flexibility in system design and integration.With its diagnostic capabilities and status indicators,the module provides comprehensive monitoring of channel status and module health,facilitating quick troubleshooting and maintenance operations.

Technical Specifications

Parameter Name

Parameter Value

Product Model

WESTINGHOUSE 1C31233G04

Manufacturer

Westinghouse Electric Corporation

Product Type

Digital Input Module

Input Channels

32 points isolated

Input Voltage

24VDC nominal(19-30VDC range)

Input Current

8mA typical per point

Logic Level 1

15-30VDC

Logic Level 0

0-5VDC

Isolation

1500V AC channel-to-channel

Response Time

<3ms

Power Consumption

5W maximum

Operating Temperature

-20°C to+70°C

Storage Temperature

-40°C to+85°C

Connection Type

Removable terminal block

Installation

DIN rail or panel mount

Safety Standards

UL 508,CSA 22.2

Main Features and Advantages

The WESTINGHOUSE 1C31233G04​incorporates several advanced features that ensure reliable performance in industrial environments.The module’s high-density design provides 32 isolated input channels in a compact form factor,optimizing cabinet space utilization while maintaining excellent signal integrity.Each input channel features individual optical isolation,preventing ground loops and minimizing the risk of signal interference between channels.This isolation technology also provides protection against voltage transients and electrical noise,ensuring stable operation in electrically challenging environments.The module’s wide input voltage range(19-30VDC)accommodates voltage fluctuations commonly encountered in industrial power systems,maintaining reliable operation despite supply variations.

Diagnostic capabilities and maintenance features:The WESTINGHOUSE 1C31233G04​includes comprehensive diagnostic functions that monitor module health and channel status.LED indicators for each channel provide immediate visual feedback of input status,facilitating quick troubleshooting during commissioning and maintenance.The module’s built-in diagnostics can detect wiring faults such as open circuits and short circuits,alerting operators to potential issues before they impact system operation.The removable terminal block design simplifies wiring and maintenance procedures,reducing downtime during module replacement or system modifications.These features collectively enhance system reliability and reduce mean time to repair(MTTR)in critical applications.

Configuration flexibility and compatibility:The module supports flexible configuration options through software settings,allowing customization of filter times and response characteristics to match application requirements.This adaptability makes the WESTINGHOUSE 1C31233G04​suitable for various applications ranging from fast-response limit switch monitoring to slower-speed status indication.The module’s compatibility with standard industrial control protocols ensures seamless integration with Westinghouse DCS systems and other automation platforms.The robust construction and industrial-grade components ensure long-term reliability in continuous operation,making the module suitable for critical process applications where availability is paramount.

Application Field

The WESTINGHOUSE 1C31233G04​finds extensive application across various industrial sectors requiring reliable digital input acquisition.In power generation facilities,the module is employed in turbine control systems,boiler protection systems,and auxiliary equipment monitoring.It processes signals from pressure switches,flow switches,and temperature switches,providing critical status information to the control system for equipment protection and process optimization.The module’s high noise immunity makes it particularly valuable in switchgear rooms and generator halls where electromagnetic interference is significant.

In oil and gas applications,the WESTINGHOUSE 1C31233G04​performs essential monitoring functions in offshore platforms,refineries,and pipeline operations.The module interfaces with safety system devices including emergency shutdown switches,fire detection system contacts,and pressure safety valve status indicators.Its robust design withstands the challenging environments encountered in these applications,including wide temperature variations,humidity,and corrosive atmospheres.The high channel density supports the extensive monitoring requirements of large-scale process facilities while minimizing cabinet space requirements.

The manufacturing and process industries utilize the WESTINGHOUSE 1C31233G04​for machine control,conveyor system monitoring,and safety interlock systems.In automotive manufacturing,the module interfaces with robotic cell safety gates,machine status indicators,and part presence detectors.The food and beverage industry employs the module for equipment status monitoring and safety circuit implementation in processing and packaging lines.Across all these applications,the WESTINGHOUSE 1C31233G04​delivers the reliability and performance necessary for maintaining operational efficiency and safety in demanding industrial environments.

Related Products

WESTINGHOUSE 1C31232G03:16-channel digital input module with similar characteristics

WESTINGHOUSE 1C31234G05:Digital output module for complementary control functions

WESTINGHOUSE 1C31235G06:Relay output module for high-power switching applications

WESTINGHOUSE 1C31236G07:Analog input module for process variable monitoring

WESTINGHOUSE 1C31237G08:Analog output module for control valve operation

WESTINGHOUSE 1C31238G09:High-speed counter module for rotational equipment monitoring

WESTINGHOUSE 1C31239G10:Communication module for system integration

WESTINGHOUSE 1C31240G11:Power supply module for system power requirements

Installation and Maintenance

Installation requirements:Proper installation of the WESTINGHOUSE 1C31233G04​begins with verifying compatibility with the existing control system and backplane.The module should be securely mounted on DIN rail or panel using appropriate fasteners,ensuring adequate clearance for heat dissipation and maintenance access.Field wiring must use appropriate gauge wires with proper separation between signal cables and power cables to prevent electrical interference.All connections should be torqued to manufacturer specifications to ensure reliable contact and prevent loose connections.The installation environment should remain within specified temperature and humidity ranges,with adequate ventilation provided to prevent overheating.

Maintenance recommendations:Regular maintenance of the WESTINGHOUSE 1C31233G04​includes periodic inspection of terminal connections for tightness and signs of corrosion.The module’s status indicators should be monitored during normal operation to verify proper functioning.Quarterly functional testing should verify all input channels respond correctly to field device status changes.Environmental conditions should be monitored to ensure they remain within specified limits,with particular attention to temperature and humidity levels that could affect long-term reliability.Firmware updates should be applied following manufacturer recommendations during planned maintenance windows,with proper backup of configuration data before performing updates.

Product Guarantee

We guarantee genuine WESTINGHOUSE 1C31233G04​products with full traceability and certification.Each module undergoes comprehensive testing including functional verification,electrical performance testing,and environmental stress screening to ensure compliance with original specifications.Our quality assurance process includes visual inspection,electrical parameter validation,and burn-in testing that identifies potential early-life failures.We provide complete technical documentation including installation guides,specification sheets,and application notes to support successful system integration.All WESTINGHOUSE 1C31233G04​modules are backed by our 12-month warranty and lifetime technical support commitment,with expedited replacement services available for critical applications.Our inventory management system maintains adequate stock levels to support both planned projects and emergency requirements,ensuring minimal downtime for your operations.

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