Product Description
I. Product Overview
The Allen-Bradley 1771-IXE module is a high-performance DC digital input module in the PLC-5 series, mainly used for the efficient collection and transmission of various DC digital signals in industrial automation systems. In the field of industrial production, scenarios such as material detection in automated production lines, position limitation of mechanical equipment, and status feedback of safety protection devices generate a large number of DC digital signals. These signals are important basis for PLC controllers to realize automatic control and production monitoring. With advanced circuit design and stable performance, the 1771-IXE module can accurately capture these signals and reliably transmit them to the PLC controller, providing strong support for the stable operation and efficient management of industrial systems.
The module adopts a standardized compact structure, which is highly compatible with the 1771 series I/O enclosures and can be easily integrated into various industrial control cabinets, significantly saving installation space. The shell is made of high-strength industrial-grade alloy material, which has undergone strict environmental tests and has excellent anti-vibration and anti-impact performance. It can maintain stable work in industrial sites with frequent mechanical vibration and high equipment operation intensity. At the same time, the surface of the shell has been treated with special technology, which has good dust-proof, moisture-proof and oil-proof capabilities, and can adapt to complex industrial environments with much dust, humidity and oil stains, ensuring long-term and reliable completion of signal collection tasks.
II. Performance Parameters
(1) Electrical Characteristics
Power Requirement: The working power of the 1771-IXE module comes from the backplane of the 1771 I/O enclosure, requiring two types of power supplies: +5V DC and +24V DC. Among them, +5V DC supplies power to the internal logic circuit of the module, with typical current consumption in a specific range; +24V DC can be used as an auxiliary power supply for external sensors, and its current output capability varies according to the design, which can provide convenient power supply support for some DC sensors and simplify system wiring.
Input Channels: The module is equipped with 32 independent DC digital input channels, which can collect 32 DC digital signals at the same time, meeting the needs of medium and large industrial control systems for multi-signal parallel collection, reducing the number of modules used and improving system integration efficiency.
Input Signal Types: It supports DC input signals, with an input voltage range usually of 10-30V DC. It is compatible with DC sensors with NPN and PNP outputs, and can be directly connected to various DC digital devices such as photoelectric switches, proximity sensors, travel switches, and buttons, with extremely strong versatility.
Input Current: In the signal-on state, the input current of each channel is generally 3-10mA, and the leakage current in the off state is extremely small (usually less than 0.5mA), which will not cause additional burden on the external signal source and ensures the accuracy of signal collection.
Response Time: The response time of the input signal is extremely short, usually within 1ms, which can quickly capture the instantaneous changes of external signals, meeting the scenarios with high requirements for signal real-time performance such as high-speed production lines and precision machinery.
(2) Interface Characteristics
External Signal Interface: A high-density spring-type terminal block is used as the external signal connection interface. Compared with traditional screw terminals, it has the advantages of fast wiring speed, high connection reliability, and strong anti-vibration and anti-loosening ability. The terminal block is clearly marked with input terminals, common terminals and power terminals of each channel, which is convenient for technicians to wire quickly and accurately, greatly improving the efficiency of installation and commissioning.
Backplane Communication Interface: It realizes high-speed communication with the PLC processor through the standard backplane connector of the 1771 I/O enclosure, using parallel data transmission mode with a high data transmission rate. It ensures that the status of 32 input signals can be synchronized to the PLC controller in real time without delay or data loss, meeting the system's demand for real-time data.
(3) Environmental Adaptability
Operating Temperature: It can work stably in a wide temperature range of -25°C to 65°C (-13°F to 149°F). Compared with similar products, it has better adaptability to high and low temperatures, and can operate normally in extreme temperature scenarios such as cold storage environments and high-temperature production workshops without affecting the signal collection accuracy.
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 electronic components of the module will not be damaged even in harsh temperature conditions during long-distance transportation and long-term storage, thus guaranteeing the long-term stability of the module's performance.
Anti-Electromagnetic Interference: It meets international industrial electromagnetic compatibility standards and has extremely strong anti-electromagnetic interference ability. It can effectively resist strong electromagnetic interference generated by industrial on-site motors, frequency converters, high-voltage equipment, etc., prevent misjudgment in signal collection, and ensure the accuracy and reliability of data.
III. Functional Characteristics
(1) Multi-Channel High-Speed Signal Collection
The core function of the 1771-IXE module is to realize high-speed parallel collection of 32 DC digital signals. Each channel is independent and does not interfere with each other. Whether it is multiple signals triggered at the same time or scattered signals with high-frequency changes, the module can accurately capture and transmit them in real time, ensuring that the PLC controller can fully and timely grasp the status of on-site equipment. For example, in a high-speed packaging production line, the module can simultaneously collect 32 key signals such as packaging film in place, product counting, and sealing temperature reaching the standard, providing accurate data support for the PLC to control the start-stop and speed adjustment of the packaging machine.
(2) Channel-Level Status Indication and Diagnosis
The module is equipped with 32 independent input status indicators and 2 power indicators (corresponding to +5V and +24V respectively). The indicators use high-brightness LEDs, which are clearly visible even in strong light environments. When an input channel collects a valid signal, the corresponding indicator will light up in real time; the power indicator is always on, indicating that the corresponding power supply is normal. In addition, the module has a complete channel-level fault diagnosis function. When a channel has abnormal conditions such as disconnection, short circuit, or overvoltage, it will send specific fault codes to the PLC controller through backplane communication, accurately locating the fault channel and greatly shortening the fault Investigation time.
(3) Comprehensive Electrical Protection Mechanism
Overvoltage Protection: Each input channel is equipped with an independent overvoltage protection circuit. When the input voltage exceeds 35V DC, the protection circuit will act quickly to clamp the input voltage within a safe range, preventing excessive voltage from damaging the internal circuit of the module.
Short-Circuit Protection: When a short circuit occurs in the external signal line, the module will automatically limit the input current of the channel, avoiding the module from being burned due to excessive short-circuit current, and at the same time, it will not affect the normal operation of other channels.
Reverse Connection Protection: It supports reverse connection protection of the positive and negative poles of the input signal. Even if the positive and negative poles are connected reversely by mistake during wiring, the module will not be damaged. It can return to normal work only by correcting the wiring, effectively reducing the loss caused by wiring errors.
(4) Flexible System Integration and Expansion
The 1771-IXE module is perfectly compatible with all processors of the Allen-Bradley PLC-5 series, and can be directly connected to the system without any conversion module. The module configuration and signal reading can be easily completed through RSLogix 5 programming software. In the 1771 I/O enclosure, this module can be mixed with 1771 series digital output modules, analog modules, special function modules, etc. to form a fully functional control system. When the system needs more input channels, it can be realized by increasing the number of modules or expanding the I/O enclosure, which can support up to dozens of modules to work together, meeting the needs of large-scale industrial control systems.
(5) Auxiliary Power Output Function
The module has a built-in +24V DC auxiliary power supply, which can provide working power for external two-wire or three-wire DC sensors, eliminating the need for an additional independent power module, simplifying the system's power supply architecture and reducing the overall deployment cost. The auxiliary power supply has an overcurrent protection function. When an overcurrent occurs in the external sensor circuit, it will automatically cut off the output to protect the module and the sensor from damage, and the power supply can be automatically restored after the fault is eliminated.
IV. Application Scenarios
(1) Automobile Manufacturing Production Line
In the automobile manufacturing production line, the 1771-IXE module can be used to collect 32 key signals such as the working status of welding robots, vehicle body positioning signals, the running position of the conveyor chain, and the switch status of safety doors. These signals are transmitted to the PLC controller in real time, and the controller coordinates the operation of various equipment according to the signal status to ensure that welding, assembly and other processes are carried out in an orderly manner, improving production efficiency and product quality.
(2) Semiconductor Production Equipment
In semiconductor production equipment, the module can collect high-precision signals such as the in-place signal of the wafer transfer device, the pressure status signal of the vacuum chamber, the ready signal of the temperature control device, and the switch status of various valves. Due to the module's fast response time and high anti-interference ability, it can meet the strict requirements of semiconductor production for signal collection accuracy and real-time performance, ensuring the stability of the production process and product yield.
(3) Logistics Sorting System
In the automated logistics sorting system, the 1771-IXE module can simultaneously collect 32 signals such as the barcode identification signal of packages, the trigger signal of weighing sensors, the in-place signal of sorting ports, and the running status signal of the conveyor belt. The PLC controller controls the action of the sorting mechanism according to these signals to realize fast and accurate sorting of packages and improve the efficiency of logistics sorting.
(4) Metallurgical Steel Rolling Equipment
In metallurgical steel rolling equipment, the module can collect signals such as the position signal of the roll, the thickness detection signal of the steel plate, the running status signal of the cooling system, and the feedback signal of the safety interlock device. Through real-time collection and processing of these signals, the PLC controller can adjust the steel rolling parameters in time to ensure the stable progress of the steel rolling process and improve the quality of steel products and production safety.
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