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Home > Electrical & Electronics > Electrical Control System > Allen-Bradley 1746-IM16 Digital AC Input Module

Allen-Bradley 1746-IM16 Digital AC Input Module

Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

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Allen-Bradley 1746-IM16 Digital AC Input Module thumbnail-2

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Allen-Bradley 1746-IM16 Digital AC Input 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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Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

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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 0°C - 60°C

Humidity 5% - 95% (non - condensing)

Output voltage 24V DC

Dimensions 160mm×100mm×150mm

I. Product Overview

Rockwell Automation 1746-IM16 is a 16-point isolated digital input module in the SLC 500 series. It is mainly used in industrial automation control systems to collect digital signals in on-site environments with high electromagnetic interference. It is widely applied in industrial scenarios with strong interference such as motor control, metallurgical equipment, and heavy machinery. It can isolate the switching signals from devices like contactors, relays, and limit switches, then accurately transmit them to the CPU module of the PLC, providing reliable on-site data for the system. It is an important component to ensure the stable operation of the control system in complex industrial environments.

II. Functional Features

Isolation protection design: It adopts electrical isolation technology between channels. Isolation measures are implemented between each input channel, as well as between channels and the backplane bus. This can effectively block the conduction of interference signals between different channels, and prevent the impact of external high voltage, surges, etc. on the module and the system, greatly improving the anti-interference ability and working reliability of the module in harsh electromagnetic environments.

Multi-channel signal acquisition: Equipped with 16 independent digital input channels, it can collect 16 channels of on-site digital signals at the same time, meeting the need for simultaneous monitoring of multiple equipment states. It is suitable for industrial control scenarios that require a large number of digital signal acquisitions, reducing the number of modules used and optimizing the system structure.

Stable signal processing: It has enhanced signal shaping and filtering circuits, which can accurately process the input switching signals, effectively suppressing high-frequency noise, electromagnetic radiation, and other interferences in industrial sites, ensuring that the collected signals are stable and reliable, and avoiding signal misjudgment and abnormal system actions caused by interference.

Wide voltage adaptation range: It supports a wide range of DC input voltages, usually 10-30V DC, compatible with the power supply standards of sensors and control equipment commonly used in industrial sites. This improves the versatility and applicability of the module in different voltage environments and reduces the difficulty of equipment selection.

Convenient installation and maintenance: It adopts the standard installation size of the SLC 500 series, which can be easily installed on the rack of this series to work with other modules. The terminal block adopts a plug-in design, facilitating quick on-site wiring and later maintenance and replacement, shortening the installation and commissioning time and fault handling cycle.

Intuitive status indication: Each input channel is equipped with an independent LED indicator. When the channel receives an effective signal, the indicator lights up, allowing operators to intuitively understand the working status of each channel, facilitating quick judgment of whether the signal is normal, and simplifying the system debugging and fault Investigation process.

Good system compatibility: As a standard module of the SLC 500 series, it has perfect compatibility with the rack, power module, and CPU module of this series, and can be seamlessly integrated into the SLC 500 control system, ensuring the stable operation of the entire system, and providing convenience for system expansion and upgrading.

III. Technical Parameters

Input parameters:
Number of input points: 16 points, supporting 16 channels of independent digital signal input.
Input type: Isolated DC digital input, suitable for switching signal acquisition.
Input voltage range: 10-30V DC, compatible with various industrial DC power supplies.
Input current: The typical value per channel is 8mA (at 24V DC), with little impact on the load of on-site equipment.
ON/OFF voltage threshold: ON voltage ≥10V DC, OFF voltage ≤5V DC, ensuring accurate signal recognition.
Response time: Usually 2ms, which can quickly respond to changes in on-site signals and meet the real-time requirements of the system.
Isolation voltage: The isolation voltage between channels and between channels and the backplane is usually 250V AC, providing reliable electrical isolation protection.

Physical parameters:
Dimensions: Length is approximately 160mm, width is approximately 100mm, height is approximately 150mm (compatible with other modules in the SLC 500 series), suitable for installation in standard racks.
Weight: Approximately 0.6kg, with moderate weight and convenient installation.

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

IV. Working Principle

Signal access and isolation: The 16 input channels of 1746-IM16 are connected to on-site devices such as contactors, relays, and limit switches through terminal blocks. When on-site devices act to generate switching signals (high level or low level), the signals first enter the isolation circuit of the module. The isolation circuit uses methods such as photoelectric coupling or electromagnetic isolation to electrically isolate external signals from the internal circuit of the module and the backplane bus, preventing external interference signals from entering the system.

Signal conditioning and shaping: The isolated signal enters the signal conditioning circuit, which filters the signal to remove noise and interference components; at the same time, it shapes the signal, converting irregular signal waveforms into standard rectangular waves to ensure the integrity and stability of the signal.

Signal conversion and transmission: The conditioned signal is converted into a logic signal recognizable by the PLC system ("1" indicates signal ON, "0" indicates signal OFF). These logic signals are transmitted to the CPU module through the backplane bus of the SLC 500 series, providing a basis for the logical control of the system.

Status indication and system response: The LED indicators on the module light up or go off synchronously according to the signal status of each channel, feeding back the input signal situation in real time. After receiving the logic signal, the CPU module performs operations and judgments according to the preset control program, and issues corresponding control instructions to realize automatic control of on-site equipment. For example, when a motor overload protection signal is detected, the CPU can control the motor to stop running according to the program, playing a role in protecting the equipment.

Product Tags: 1746-IM16