Emerson Ovation Isolated Analog Input Module, Model 5217D81-H01_Ningde Androld Automation Equipment Co.,Ltd.

June 11, 2026

Emerson Ovation Isolated Analog Input Module, Model 5217D81-H01

The 5217D81-H01 is a dedicated isolated analog input I/O module for the Emerson Ovation distributed control system; the suffix H01 represents a specific hardware revision and factory fixed configuration version. It receives standard 4–20mA DC signals from field two-wire transmitters, completes high-precision A/D conversion, and transmits digital measured values to the DPU controller for real-time parameter monitoring, closed-loop process regulation and safety interlock logic judgment.

Description

This module features a rack plug-in design and supports hot swapping without disrupting the normal operation of other modules installed in the same control rack. Each input channel is equipped with independent galvanic isolation, surge absorption and overvoltage protection circuits, effectively suppressing ground loop interference introduced by long field cables and preventing abnormal field voltage from damaging the rack backplane circuits. Built-in full-channel online diagnostics detect loop open circuit, short circuit, transmitter power loss and internal hardware faults in real time, synchronizing fault alarm information to the operator workstation for remote maintenance alerts.

Channel range scaling, digital filtering time constant, engineering unit conversion and fault processing strategies can be uniformly configured via Ovation engineering software. With low temperature drift, good linearity and strong electromagnetic compatibility, it is widely used as core analog signal acquisition hardware in thermal power, petrochemical, metallurgy and other large continuous process control scenarios.

Technical Specifications

Input Channel Parameters

Multiple mutually isolated analog input channels, fully compatible with industrial standard 4–20mA two-wire transmitters;
Each channel integrates loop power supply monitoring function, enabling quick on-site fault localization for transmitters and wiring;
Configurable digital filtering suppresses high-frequency signal jitter and measurement noise interference.

Acquisition Accuracy

High-resolution A/D conversion circuitry delivers superior full-scale precision and long-term operational stability, meeting the strict accuracy requirements for key control parameters including boiler drum level, main steam pressure, feedwater flow and turbine lubricating oil temperature in power plant control loops.

Electrical Power Parameters

Power is supplied entirely through the Ovation rack backplane, no external auxiliary power wiring is required. Low power consumption does not add extra load to the rack redundant power supplies. It is supplied with a matched dedicated rear terminal base for centralized field cable termination, simplifying field wiring construction and routine later maintenance.

Diagnosis & Configuration Features

Continuous self-test covers internal hardware circuits and every external field input loop;
Front panel LEDs display real-time operating status, and fault data is uploaded synchronously to the upper monitoring system;
Each channel supports independent configuration of scaling ranges, filtering parameters and alarm enable switches to adapt to different field measuring instruments.

Environmental Conditions

Operating temperature: 0 ℃ ~ +60 ℃
Storage & transportation temperature: −40 ℃ ~ +85 ℃
Relative humidity: ≤95% RH, non-condensing
Standard Ovation I/O unified outline size, freely interchangeable in rack slots

Front Panel LED Indicators

OK indicator: Module hardware and communication operate normally
Separate channel LEDs: Real-time signal access status of each input channel
Fault indicator: Alarm for hardware failure or abnormal field signal loop

Application Scenarios

Thermal Power Generation Industry

Collects 4–20mA analog signals from drum level, main steam pressure, flue gas temperature, feedwater flow and lube oil pressure transmitters, supplying accurate measurement data for boiler combustion regulation, drum level closed-loop control and turbine auxiliary system monitoring within the DCS.

Petrochemical Industry

Acquires pressure, flow, liquid level and temperature signals from reaction kettles, fractionating towers and pipeline delivery systems, supporting stable automatic regulation and long-term safe continuous operation of chemical production units.

Metallurgy Industry

Collects heating furnace temperature, cooling water flow and pressure measurement data, realizing centralized monitoring and closed-loop automatic control for smelting and rolling production lines.

General Process Industry

Deployed in water treatment plants, district heating stations, pulp & paper mills and other facilities, connecting field analog transmitters to realize unified collection, remote viewing and trend storage of full process parameters on the unified DCS control platform.

5217D81-H01

搜索 2 个关键词，参考 12 篇资料

Emerson Ovation 5217D81-H01

Product Title

Emerson Ovation Isolated Analog Input Module (AI), Model 5217D81-H01

Suffix H01 stands for exclusive hardware revision + factory fixed wiring configuration variant, belonging to Ovation DCS standard I/O series。

5217D81-H01实物图

Product Introduction

This plug-in rack-mounted analog input module is used to collect standard 4–20mA DC loop current signals from field two-wire transmitters, complete high-precision A/D conversion, and transmit digital measurement values to the DPU controller for process parameter monitoring, closed-loop regulation and safety interlock logic judgment。

Supports hot swapping, replacement will not interrupt the operation of other modules in the same control rack;
Each channel adopts independent galvanic isolation (1000V AC/DC isolation withstand voltage), surge suppression and overvoltage protection circuits, effectively eliminate ground loop interference of long-distance field cables and avoid backplane damage caused by abnormal field voltage;
Built-in full-channel online diagnosis, real-time detection of loop open circuit, short circuit, transmitter power loss and internal hardware faults, fault codes synchronously uploaded to operator workstation for remote alarm maintenance;
Channel scaling, digital filtering time constant, engineering unit conversion and fault safety fallback strategy are uniformly configured through Ovation engineering software; low temperature drift, high linearity and strong EMC anti-interference capability, widely used in thermal power, petrochemical, metallurgy large continuous process control projects。

Core Technical Specifications

1. Input Channel Parameters

Multi-channel mutual isolation design, fully compatible with industrial universal 4–20mA two-wire transmitters;
Each channel integrates loop power monitoring function, convenient for on-site rapid troubleshooting of transmitters and wiring faults;
Configurable digital filtering suppresses high-frequency signal jitter and measurement noise fluctuation.

2. Measurement Accuracy

High-resolution A/D conversion circuit is adopted, typical full-scale accuracy ≤ ±0.1% FS, long-term operation stable, fully meets the precision control requirements of key parameters such as boiler drum level, main steam pressure, feedwater flow and turbine lube oil temperature in power plant control loops.

3. Power Supply Mode

Power is taken from Ovation rack backplane bus uniformly, no external auxiliary power wiring required; low power consumption will not add extra load to rack redundant power supplies. Matched dedicated rear terminal base is delivered together for centralized field cable termination, convenient for construction and later maintenance。

4. Diagnosis & Configuration

Continuous self-test covers internal hardware circuits and all external field input loops;
Front panel LED real-time status display, fault information synchronously uploaded to upper monitoring system;
Each channel independently configures scaling range, filtering parameters and alarm enable switch, adapting to different field measuring instruments.

5. Environmental Conditions

Operating temperature: 0 ℃ ~ +60 ℃
Storage & transportation temperature: −40 ℃ ~ +85 ℃
Relative humidity: ≤95% RH, non-condensing
Standard Ovation I/O unified outline size, arbitrary interchangeable installation in rack slots

6. Front Panel LED Indicators

OK green light: Module hardware and communication run normally;
Channel individual indicator lights: Real-time signal access state of each input channel;
Fault red light: Hardware failure or field signal loop abnormality alarm.

Application Scenarios

1. Thermal Power Industry

Collect 4–20mA signals of drum liquid level, main steam pressure, flue gas temperature, feedwater flow, lube oil pressure transmitters, provide accurate measurement basis for boiler combustion optimization, drum level closed-loop adjustment and turbine auxiliary system monitoring in DCS system.

2. Petrochemical Industry

Acquire pressure, flow, liquid level and temperature signals of reaction kettles, fractionating towers and pipeline delivery systems, realize stable automatic regulation and long-term safe continuous operation of chemical production units.

3. Metallurgy Industry

Collect heating furnace temperature, cooling water flow and pressure measurement data, implement centralized monitoring and closed-loop automatic control for smelting and rolling production lines.

4. General Process Industry

Deployed in water treatment plants, district heating stations, pulp & paper mills and other facilities, uniformly access field analog transmitters to realize unified collection, remote viewing and trend storage of full process parameters on the unified DCS control platform.

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