Description

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Product Overview

The Emerson 1C31147G01 is a high-performance pulse input (PI) module designed for Emerson’s Ovation distributed control system (DCS). As part of the RSTi-EP CPE200 series of compact controllers, this module specializes in acquiring high-frequency pulse signals from field devices such as flow meters, turbine sensors, and tachometers, converting them into digital data for real-time monitoring and control. The Emerson 1C31147G01 supports 2-channel pulse input with a 24/48 VDC operating range, delivering precise frequency measurement up to 50 kHz for critical applications in power generation and industrial automation. Its modular, hot-swappable design enables seamless integration into existing Ovation racks, allowing maintenance or replacement without system shutdown. With built-in cybersecurity features including Achilles Level 2 certification and secure boot technology, the module protects against unauthorized access and ensures operational integrity in sensitive environments. The Emerson 1C31147G01 also features LED status indicators for quick diagnostics and complies with industrial EMC standards for reliable performance in electrically noisy settings. By providing accurate pulse counting and frequency analysis, this module enables efficient energy management, equipment protection, and process optimization across continuous industries .

Technical Specifications

Parameter Name	Parameter Value
Product Model	1C31147G01
Manufacturer	Emerson
Product Type	Pulse Input Module (PI Card)
Input Channels	2 points per module
Input Type	Pulse frequency (24/48 VDC)
Max Frequency	50 kHz
Operating Voltage	24 VDC
Communication Protocols	PROFINET, OPC UA, Modbus/TCP, DNP3
Certifications	Achilles Level 2, CE, industrial EMC
Isolation	Electrical isolation for noise immunity
Operating Temperature	-20°C to +70°C (industrial range)
Dimensions	Compact form factor for Ovation racks
Weight	~0.3 kg
Diagnostics	LED status indicators per channel

Main Features and Advantages

The Emerson 1C31147G01 delivers high-accuracy pulse acquisition with a maximum frequency response of 50 kHz, enabling precise monitoring of high-speed rotating equipment like turbines and pumps. Its dual-channel design allows simultaneous tracking of two independent pulse sources, reducing hardware requirements for complex systems. The module’s wide voltage compatibility (24/48 VDC) ensures interoperability with diverse field sensors without additional signal conditioning .

Integrated cybersecurity features, including Achilles Level 2 certification and secure boot technology, protect the Emerson 1C31147G01 from cyber threats in connected industrial networks. The hot-swap capability allows module replacement during operation, minimizing downtime in continuous processes. LED indicators provide instant channel status feedback, speeding up troubleshooting. These features make the Emerson 1C31147G01 a reliable solution for critical measurement applications where accuracy and availability are paramount .

Application Fields

The Emerson 1C31147G01 is widely used in power generation for turbine speed monitoring, generator excitation control, and fuel flow measurement. In water and wastewater treatment, it tracks pump rotations and filter cycle counts. The module also supports turbine control systems in industrial drives, providing real-time speed data for mechanical protection. For renewable energy applications, the Emerson 1C31147G01 enables frequency monitoring in solar inverters and wind turbine controllers, contributing to grid stability .

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