Guizhou Yuanmiao Automation Equipment Co., Ltd.: 1Yr

Anshun, Guizhou, China; Main products: ABB Triconex Foxboro LAM, Bentley Motorola Schneider, Kollmorgen HIMA ALSTOM, Reliance GE HONEYWELL NI、ICS

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Home > Products > Allen-Bradley > Allen-Bradley 1746-NI4 Analog I/O Module

Allen-Bradley 1746-NI4 Analog I/O Module

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Product Details

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	0°C - 60°C
Humidity	5% - 95% (non - condensing)	Output voltage	24V DC
Dimensions	160mm×100mm×150mm

Product Description

I. Product Overview

Rockwell Automation 1746-NI4 is a 4-channel analog input module in the SLC 500 series, mainly used for high-precision acquisition of a small number of key analog signals in industrial automation control systems. It is widely applied in fields with high requirements for signal acquisition accuracy, such as precision machinery processing, pharmaceutical production, and food and beverage industries. It can be connected to devices like high-precision temperature sensors, pressure sensors, and liquid level transmitters, converting continuously changing physical quantities such as temperature, pressure, and liquid level into digital signals recognizable by PLC. It provides reliable data for precise control, real-time monitoring, and quality traceability of the system, and is an important component to ensure the stable operation of small precision control systems.

II. Functional Features

High-precision signal acquisition: Adopting high-performance A/D conversion components with a conversion accuracy of up to 14 bits, it can accurately convert analog signals, ensuring minimal error in the collected data. It meets the strict requirements for signal accuracy in precision control scenarios and provides strong support for high-precision regulation of the system.

4-channel independent acquisition: Equipped with 4 independent analog input channels, it can simultaneously collect 4 different analog signals. It is suitable for control systems that need to monitor a small number of key parameters, without occupying too much rack space, simplifying the system layout and reducing equipment investment costs.

Diversified signal compatibility: Supports various standard analog input signals, including 0-10V DC voltage signals, 4-20mA current signals, etc. It can adapt to different types of sensors and transmitters, enhancing the versatility and flexibility of the module in different application scenarios and reducing restrictions on equipment selection.

Enhanced signal processing: Built-in advanced signal conditioning circuits and filtering systems, it can effectively resist electromagnetic interference, radio frequency interference, etc. in industrial sites. It filters and amplifies the input signals, removing noise and fluctuations in the signals, ensuring the stability and consistency of the collected data, and avoiding system misoperation caused by signal interference.

Flexible range setting: Allows users to independently set the input range of each channel according to the signal output range of on-site equipment, which can be completed through programming or hardware configuration. This enables the module to accurately match equipment with different signal ranges, further improving the accuracy of signal acquisition.

Convenient system integration: As a standard module of the SLC 500 series, it has excellent compatibility with the rack, power module, and CPU module of this series. It can be directly installed on a standard rack and realizes fast data interaction with the system through the backplane bus, facilitating system installation, commissioning, and later expansion.

Reliable fault diagnosis: Equipped with a complete channel fault diagnosis function, it can monitor the signal status of each channel in real time. When abnormal situations such as signal disconnection, over-range, or module failure occur, it can promptly feed back to the CPU module through status indicators or signals, facilitating operators to quickly locate and handle faults and improving the maintenance efficiency of the system.

III. Technical Parameters

Input parameters:
Number of input channels: 4 channels, supporting 4 independent analog signal inputs.
Input signal types: Supports 0-10V DC voltage signals, 4-20mA current signals, etc.
Resolution: 14 bits, ensuring high precision of analog signal conversion.
Conversion rate: The typical conversion time per channel is 1ms, with a short total conversion cycle, which can quickly respond to signal changes and meet the real-time requirements of the system.
Input impedance: 100kΩ for voltage input, 250Ω for current input, reducing the load impact on the signal source.

Accuracy parameters:
Linear error: ≤±0.05% of full scale, ensuring excellent linearity of converted data.
Temperature drift: ≤±0.002% of full scale/°C, less affected by changes in ambient temperature, ensuring measurement accuracy in different temperature environments.

Physical parameters:
Dimensions: Approximately 160mm in length, 100mm in width, and 150mm in height (compatible with other modules in the SLC 500 series), suitable for installation in standard racks.
Weight: Approximately 0.5kg, light in weight and convenient for installation.

Environmental parameters:
Operating temperature: 0°C-60°C, can work stably in common temperature environments of industrial sites.
Relative humidity: 5%-95% (non-condensing), with certain moisture resistance, adapting to humid environments.
Vibration resistance: 10-55Hz, amplitude 0.38mm, can maintain stable operation in vibrating environments.
Impact resistance: Peak acceleration 15g (duration 11ms), can withstand shocks during transportation and installation.

IV. Working Principle

Signal access: The 4 input channels of 1746-NI4 are respectively connected to on-site high-precision sensors, transmitters, and other equipment, receiving analog signals from these equipment (such as 4-20mA current signals or 0-10V DC voltage signals).

Signal conditioning: The input analog signal first enters the signal conditioning circuit inside the module. This circuit amplifies and filters the signal, amplifying weak signals to a range suitable for A/D conversion, and at the same time filtering out high-frequency noise and interference components in the signal to ensure the purity and stability of the signal.

A/D conversion: The conditioned analog signal enters the A/D conversion circuit. The high-performance A/D conversion chip converts the continuously changing analog signal into a discrete digital signal. During the conversion process, the module quantizes the signal according to the preset range and accuracy requirements to generate the corresponding digital value.

Data transmission and processing: The converted digital signal is transmitted to the CPU module of the PLC through the backplane bus of the SLC 500 series. The CPU module further processes these digital signals (such as engineering quantity conversion, data verification, etc.), converts them into corresponding physical quantity values (such as temperature value, pressure value, etc.), and uses them for real-time monitoring, logical control, or data storage of the system.

Status monitoring and alarm: The module monitors the signal status of each channel and its own working status in real time during operation. When abnormal signals (such as disconnection, over-range) or module faults are detected, it will display fault information through status indicators and transmit the fault signal to the CPU module. The CPU module triggers corresponding alarm actions or fault handling procedures according to the preset program, such as starting alarm devices, controlling equipment to shut down, etc., to ensure the safe and stable operation of the system. For example, in the pharmaceutical production process, when the signal of the temperature sensor exceeds the set range, the module will send an alarm signal, and the CPU can control heating or cooling equipment to adjust the temperature to ensure that the production environment meets the requirements.

Company Profile

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Main products: Covering globally renowned brands: Bently Nevada, Triconex, Woodward, Foxboro, Westinghouse, Reliance, Schneider Modicon, ABB, AB (Allen-Bradley), Motorola, GE Fanuc, Yaskawa, Bosch Rexroth Rexroth, ACSO, YOKOGAWA, Rexroth, NI, ICS Triplex, Kollmorgen, Mitsubishi, MOOG, Emerson, B&R B&r, SST, ALSTOM, KUKA EPRO, LAM HIMA dark Horse, HONEYWELL, prosoft, AMAT, SIEMENS, etc. The product categories include: DCS system accessories, robot system spare parts, large servo system spare parts, etc., which are widely used in power, chemical, metallurgy, intelligent manufacturing and other fields.

Contact Us

Guizhou Yuanmiao Automation Equipment Co., Ltd.: Contact nameyezi
Chat Now; AddressXixiu District, Anshun, Guizhou

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Product Categories

ABB	Bently Nevada	TRICONEX	GE
ICS Triplex	HIMA	MOTOROLA	WOODWARD
HONEYWELL	Foxboro	Schneider Modicon	YOKOGAWA
EPRO	MOOG	Westinghouse	Reliance
Emerson	B&R	ALSTOM	LAM
KONGSBERG	FANUC	National Instruments	Kollmorgen
Other Brands	Rexroth	PROSOFT	Vibro-meter
Allen-Bradley	ZYGO	Praxis	METSO
Basler Electric	A-B	XYCOM	AMAT
TOSHIBA	CCC

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Product Tags:

1746-NI4 | 1746-NI8

Allen-Bradley 1746-NI4 Analog I/O Module

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