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Home > Electrical & Electronics > Electrical Control System > Allen-Bradley 1794-IE8 I/O Analog Module

Allen-Bradley 1794-IE8 I/O Analog Module

Allen-Bradley 1794-IE8 I/O Analog Module photo-1

Allen-Bradley 1794-IE8 I/O Analog Module photo-2

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

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Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Operating temperature -25℃ to 70℃

Humidity 5% - 95% (non - condensing)

Operating Voltage 24V DC

I. Product Overview

Rockwell Automation 1794-IE8 is an analog input module in the Flex I/O series. It is mainly used to collect various continuously changing analog signals in industrial fields (such as temperature, pressure, flow, liquid level, current, voltage, etc.) and convert these signals into digital signals for transmission to control systems (such as FlexLogix, ControlLogix controllers), providing a basis for precise control and data analysis of the system. As an "analog sensing window" in industrial automation systems, it can capture subtle changes in on-site parameters, accurately reflect the continuous changes of non-electrical physical quantities (converted into electrical signals through sensors) or electrical signals to the controller, and is a key component for realizing closed-loop control and status monitoring of industrial processes. The module adopts a modular design, has strong compatibility with racks and other modules of the Flex I/O series, and is easy to install and wire. It is widely used in chemical industry, petroleum, metallurgy, water treatment, precision manufacturing and other fields with high requirements for process parameter monitoring, providing reliable analog data support for the stable operation and quality control of industrial production.

II. Performance Parameters

Electrical Parameters:

Operating Voltage: Adopts 24V DC power supply, which conforms to common power supply standards in the industrial field, facilitating matching with on-site power supplies and other equipment and ensuring the stable operation of the module.
Current Consumption: During normal operation, the current consumption is usually around 150mA (under 24V DC condition). It has low power consumption, which can effectively reduce the overall energy consumption of the system and is suitable for long-term continuous operation.

Input Parameters:

Number of Input Channels: It has 8 independent analog input channels, which can collect 8 analog signals at the same time. It meets the demand for multi-parameter parallel monitoring in medium and large industrial control scenarios, reduces the number of modules used, and optimizes the system layout.
Input Types: Supports various standard analog input signal types, commonly including 4-20mA DC current signals and 0-10V DC voltage signals. Some models can also support 0-5V, 1-5V and other voltage signals as well as thermocouple and thermal resistance signals through software configuration, adapting to different types of sensors (such as pressure sensors, temperature sensors, flow sensors, etc.).
Resolution: The conversion resolution from analog to digital is usually 16 bits, which can realize fine collection of input signals, capture small parameter changes, and meet the needs of high-precision monitoring scenarios (such as precise liquid level control, temperature closed-loop regulation).
Accuracy: It has high measurement accuracy, usually ±0.1% of full scale (at 25℃ ambient temperature), ensuring that the collected signals are accurate and reliable, and providing a guarantee for the precise regulation of the control system.
Sampling Rate: The sampling rate of each channel can be flexibly set, and the maximum sampling rate of a single channel can usually reach 100Hz, which can quickly respond to dynamic changes of signals and is suitable for monitoring process parameters with rapid changes (such as instantaneous pressure fluctuations, sudden flow changes).
Isolation Performance: Electrical isolation design is adopted between channels, with an isolation voltage usually of 250V AC, which can effectively prevent signal interference between different channels, especially suitable for complex industrial environments where multiple parameters are collected at the same time and signal sources have different grounding.

Environmental Parameters:

Operating Temperature: It can work stably in the temperature range of -25℃ to 70℃, adapting to temperature changes in different scenarios such as industrial production workshops, outdoor equipment rooms, high and low temperature process environments. Even in low-temperature refrigeration or high-temperature baking conditions, it can maintain reliable signal acquisition performance.
Relative Humidity: It can operate normally in a relative humidity environment of 5%-95% (non-condensing), and can cope with scenarios such as humid water treatment workshops and food processing workshops, effectively preventing circuit performance degradation or failures caused by humidity.
Anti-electromagnetic Interference: It complies with industrial electromagnetic compatibility standards (such as IEC 61000-6-2), has strong anti-electromagnetic interference ability, and can resist electromagnetic interference generated by industrial on-site motors, frequency converters, high-voltage equipment, etc., ensuring the stability and accuracy of analog signal acquisition.
Vibration and Shock Resistance: The vibration resistance range is 10-500Hz, with an amplitude of 0.38mm or an acceleration of 10g; the shock resistance range can reach 30g (11ms). It can withstand vibration and shock generated during the operation or transportation of industrial equipment, ensuring the stability of the module structure and circuit performance.

III. Functional Features

Multi-channel Analog Parallel Acquisition: The 8 input channels are independent of each other and can collect 8 different types of analog signals at the same time (for example, some channels collect temperature and some collect pressure), and the acquisition process of each channel does not interfere with each other. For example, in the control system of a chemical reactor, parameters such as temperature, pressure, liquid level, and stirring motor current in the reactor can be collected at the same time, providing comprehensive reaction status information for the controller and realizing comprehensive regulation of the reaction process.
Flexible Signal Type Configuration: It supports software configuration of multiple analog signal types. Users can independently set each channel through programming software (such as Studio 5000) according to the output signal type of the on-site sensor (such as 4-20mA current signal or 0-10V voltage signal) without replacing hardware modules, which improves the versatility and flexibility of the module and reduces the complexity of system integration.
High-precision and High-resolution Acquisition: The 16-bit conversion resolution and ±0.1% full-scale accuracy ensure that the module can capture subtle changes in analog signals. For example, in precision temperature control scenarios, it can accurately collect temperature fluctuations of ±0.1℃, enabling the controller to make timely adjustments to ensure that the temperature is controlled within the range required by the process.
Powerful Diagnostics and Self-calibration Functions: The module has a complete self-diagnostic function, which can real-time monitor whether the channel has faults such as disconnection, short circuit, and signal overrun, and upload the diagnostic information to the control system, facilitating maintenance personnel to quickly locate fault points (such as sensor disconnection, wiring errors). At the same time, it supports software self-calibration function. Users can calibrate the zero point and gain of the module through programming software to ensure measurement accuracy after long-term use and reduce errors caused by drift.
Status Indication and System Integration: The module is equipped with LED indicators, which can display the power status, communication status and channel fault status of the module in real time, facilitating operators to intuitively judge the operation of the module. As part of the Flex I/O series, 1794-IE8 can work seamlessly with Flex I/O racks, communication modules (such as 1794-ACN) and Logix series controllers. It transmits the collected digital signals to the controller through the rack backplane or communication network, with low data transmission delay and fast response. It supports parameter configuration and signal processing through RSLogix 5000 or Studio 5000 programming software, perfectly integrating with the control system, and the operation is convenient.