Emerson Ovation 1C31113G01 Product Description

Product Overview

Emerson Ovation 1C31113G01 is a 13-bit analog input electronic module designed for the Emerson/Westinghouse Ovation Distributed Control System (DCS). It provides eight analog input channels for acquiring low-level process signals and converting them into digital values for controller processing. The Ovation I/O documentation identifies 1C31113G01 as an 8-channel, 13-bit analog input module with a standard ±20 mV input range.

The Emerson 1C31113G01 works with the Ovation personality-module architecture and can be configured for low-level voltage measurement or compensated thermocouple applications when paired with the appropriate personality module. This makes it useful for temperature and other low-level instrumentation signals where conventional 4–20 mA acquisition is not the preferred interface.

For plants maintaining legacy Ovation systems, 1C31113G01 Emerson Ovation provides a practical replacement solution for failed analog-input hardware. Its modular design allows maintenance teams to restore individual I/O functions while retaining the existing Ovation controller, field wiring architecture and control-system configuration.

Technical Specifications

The Ovation I/O reference lists the ±20 mV / 8-channel configuration as electronic module 1C31113G01 with personality module 1C31116G01, while compensated thermocouple applications can use 1C31116G04.

Main Features and Advantages

8-Channel Low-Level Analog Acquisition

The Emerson 1C31113G01 provides eight independent analog input channels. Its ±20 mV range is optimized for low-level signals, making it more appropriate for certain thermocouple and precision measurement applications than conventional high-level voltage or current-input modules.

13-Bit Resolution

The 13-bit A/D conversion architecture provides digital representation of low-level analog measurements for processing by the Ovation controller. This supports stable acquisition of temperature and other process variables where small signal changes are operationally significant.

1C31113G01

Flexible Personality-Module Architecture

A major feature of the Ovation I/O system is the separation between the electronic module and personality module. 1C31113G01 can be paired with 1C31116G01 for standard low-level analog input configurations or 1C31116G04 for compensated thermocouple applications.

Multiple Related Input Ranges

The 1C31113 series uses different G01–G06 variants for different input ranges. The G01 version corresponds to ±20 mV, while G02, G03, G04, G05 and G06 cover ±50 mV, ±100 mV, ±1 V, ±5 V and ±10 V respectively. This makes correct suffix matching essential when replacing an installed module.

Suitable for Legacy Ovation Systems

The 1C31113G01 Emerson belongs to the established Ovation I/O family and remains relevant for lifecycle maintenance of older DCS installations. Current aftermarket references identify the part as discontinued by the manufacturer, making tested spare inventory particularly useful for plants that continue to operate the original Ovation architecture.

Compact Modular Replacement

The module is designed for installation within an Ovation I/O rack. When a particular analog-input channel group experiences a hardware failure, replacing the affected electronic module can restore functionality without requiring replacement of the complete DCS controller or redesign of the plant’s control strategy.

Application Fields

Emerson Ovation 1C31113G01 is primarily used for low-level analog signal acquisition in power-generation and process-control applications. In thermal power plants, it can be used with appropriate personality modules for temperature-related measurements associated with boilers, turbines, feedwater systems, steam systems and auxiliary equipment.

For thermocouple-based measurements, the 1C31113G01 Emerson can work with the appropriate compensated personality module, allowing low-level thermoelectric signals to be acquired by the Ovation DCS. This is useful for monitoring temperatures at turbines, bearings, steam lines, heat exchangers and other critical process locations.

In chemical, petrochemical and oil & gas facilities, the module can support specialized low-level measurement points where signal ranges fall within the module’s specified input configuration. It can form part of a larger Ovation I/O system alongside 4–20 mA, digital-input, digital-output and analog-output modules.

The module is also useful for legacy-system maintenance. Because 1C31113G01 is a specific range variant, replacement should be based on the complete existing I/O configuration rather than simply selecting another 1C31113-series card. The electronic module, personality module and configured signal type should all be matched before installation.

Related Products

• 1C31113G02 — 13-bit, 8-channel analog-input module for ±50 mV signals; useful where the input range exceeds the G01 ±20 mV configuration.
• 1C31113G03 — 13-bit analog-input module for ±100 mV applications.
• 1C31113G04 — Analog-input module for ±1 VDC signals.
• 1C31113G05 — Analog-input module for ±5 VDC and applicable current-input configurations.
• 1C31113G06 — Analog-input module for ±10 VDC signals.
• 1C31116G01 — Personality module paired with 1C31113G01 for standard low-level analog input configurations.
• 1C31116G04 — Thermocouple personality module for compensated temperature-input applications.
• 1C31224G01 — Newer 14-bit Ovation analog-input electronic module, offering higher resolution than the 13-bit 1C31113 series.
• 5X00070G01 — High-speed 14-bit analog-input module for 4–20 mA applications, representing a different Ovation input configuration.