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Home > Electrical & Electronics > Electrical Control System > Allen-Bradley 1771-IR RTD Input Module

Allen-Bradley 1771-IR RTD Input Module

Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

Allen-Bradley 1771-IR RTD Input Module thumbnail-1

Allen-Bradley 1771-IR RTD Input Module thumbnail-2

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Allen-Bradley 1771-IR RTD Input Module photo-1

Allen-Bradley 1771-IR RTD Input Module photo-2

Allen-Bradley 1771-IR RTD Input Module photo-3

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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Payment Methods:

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 0℃ to 60℃

Humidity 5% - 95% (non - condensing)

Operating Voltage 24V DC

I. Product Overview

The Allen-Bradley 1771-IR module is a classic digital input module in the PLC-5 series, mainly used for the collection and transmission of on-site digital signals in industrial automation systems. In industrial production scenarios, a large number of equipment status signals, such as the on-off of mechanical switches, the triggering of photoelectric sensors, and the action of limit switches, exist in the form of digital quantities. These signals are the key basis for PLC controllers to monitor production processes and implement automatic control. With stable performance and reliable signal processing capability, the 1771-IR module can accurately collect these on-site digital signals and transmit them to the PLC controller, providing solid data support for the stable operation of industrial automation systems.

The module adopts a compact structural design, with dimensions highly matching the 1771 series I/O enclosures, and can be easily installed in various industrial control cabinets, greatly saving installation space. The shell is made of durable industrial-grade plastic material, which has undergone strict environmental testing and has good anti-vibration and anti-impact performance. It can maintain a stable working state in environments with continuous vibration such as mechanical processing workshops and assembly line production sites. At the same time, its shell has a certain degree of dust-proof and moisture-proof capabilities, and can adapt to the dusty and humid environmental conditions of industrial sites, ensuring long-term and reliable completion of signal collection tasks under complex working conditions.

II. Performance Parameters

(1) Electrical Characteristics
Power Requirement: The working power of the 1771-IR module comes from the backplane of the 1771 I/O enclosure, usually requiring +5V DC power supply. The typical current consumption is within a specific range, and it can share power with other modules in the enclosure without the need for an additional independent power supply, simplifying the system's power supply design and reducing the overall cost.

Number of Input Points: The module has 16 digital input channels, which can collect 16 digital signals at the same time, meeting the needs of small and medium-sized industrial control systems for multi-signal collection. If more input points are needed, expansion can be achieved by increasing the number of modules.

Input Signal Type: It supports AC input signals, with an input voltage range generally of 120V AC or 240V AC. It is compatible with various AC digital devices such as AC sensors, contactor auxiliary contacts, and relay contacts, and has strong versatility.

Input Current: In the signal-on state, the input current of each channel is usually several milliamperes to dozens of milliamperes (the specific value varies with the voltage level). The leakage current in the off state is extremely small, which will not cause excessive load on the external signal source, ensuring the accuracy of signal collection.

Response Time: The response time of the input signal is at a medium level, generally around tens of milliseconds, which can meet the requirements for signal real-time performance in most industrial production scenarios, ensuring that the PLC controller can timely obtain on-site equipment status information.

(2) Interface Characteristics
External Signal Interface: Equipped with a standard terminal block for connecting external digital signal sources. The terminal block adopts a screw fixing method, so the wiring is firm and reliable, which can effectively prevent wiring looseness caused by vibration, collision and other factors, ensuring the stability of signal transmission. The interface is clearly marked, clearly distinguishing the terminals of each input channel, which is convenient for technicians to complete wiring operations quickly and accurately.

Backplane Communication Interface: It communicates with the PLC processor through the backplane connector of the 1771 I/O enclosure, and transmits the collected digital signals to the PLC controller. The backplane interface adopts a reliable electrical connection design to ensure the timeliness and accuracy of signal transmission, enabling the PLC controller to grasp the status of the input signals collected by the module in real time.

(3) Environmental Adaptability
Operating Temperature: It can work stably within a temperature range of 0°C to 60°C (32°F to 140°F), and can adapt to common temperature changes in industrial production workshops. Whether it is a high-temperature workshop environment in summer or a low-temperature storage area in winter, it will not affect its signal collection performance and working stability.

Storage Temperature: In the storage state, it can withstand extreme temperatures from -40°C to 85°C (-40°F to 185°F), ensuring that the internal components of the module will not be damaged even in harsh temperature conditions during transportation, long-term storage and other links, thus guaranteeing the performance reliability of the module.

Anti-Electromagnetic Interference: It meets industrial-grade electromagnetic compatibility standards and has a certain anti-electromagnetic interference capability. It can resist electromagnetic interference generated by equipment such as motors, transformers, and electric welders in industrial sites, prevent input signals from being interfered with and causing false collection, and ensure the accuracy of collected data.

III. Functional Characteristics

(1) Stable Signal Collection
The core function of the 1771-IR module is to stably collect external AC digital signals. It can accurately identify the on-off state of external signals and convert them into digital signals recognizable by the PLC controller (usually 0 and 1). Whether it is a continuous signal state or a frequently changing signal, the module can stably capture it, providing real and reliable on-site data for the PLC controller. For example, in a packaging production line, the module can collect the photoelectric sensor signal on the packaging machine to determine whether the product is in place, providing a basis for the PLC controller to control the packaging action.

(2) Status Indication Function
The module is equipped with intuitive status indicators, including a power indicator and status indicators for each input point. The power indicator being on indicates that the module is powered normally; each input point corresponds to a status indicator, and when the input point collects a valid signal, the corresponding indicator will light up, clearly reflecting the working status of each input point. This brings great convenience to technicians in debugging and troubleshooting. By observing the status of the indicators, they can quickly judge whether the module is working normally, whether the external signal is valid, and whether the wiring is correct.

(3) Overvoltage Protection Capability
The 1771-IR module has a certain overvoltage protection function. When the external input signal voltage exceeds the specified range, the module can automatically start the protection mechanism to prevent internal components from being damaged due to overvoltage, improving the reliability and service life of the module. In industrial sites, due to power supply fluctuations or wiring errors, abnormal input voltage may occur. The overvoltage protection function can effectively deal with these emergencies and ensure the safe operation of the module.

(4) Good Compatibility and Expandability
This module has excellent compatibility with Allen-Bradley PLC-5 series controllers and can be directly connected to the PLC system without complex configuration and debugging processes. At the same time, it supports mixed installation with other types of modules (such as digital output modules, analog modules, etc.) in the 1771 I/O enclosure, facilitating users to build a complete industrial automation control system according to actual needs. When the production scale expands or the signal collection demand increases, users can expand the number of input points by increasing the number of 1771-IR modules, improving the flexibility and expandability of the system.

Product Tags: 1771-IR