Allen Bradley 1771-IAD Plc5 Input Module Ser B

Brand: Allen Bradley
Model: 1771-IAD
Type: Input Module
Country of production: United States

1771-IAD/C is a small framework programmable logic controller. It also includes discrete, analog, special I/O modules, and related peripheral devices. The 1771-IAD/C controller has strong processing power, and its communication network, functional modules, and storage capacity can be flexibly selected and configured. RSLogix500 ladder diagram programming software provides a convenient editing and development environment, and users can use the mouse to
Click and select the configuration I ≤ 0 module. At the same time, it is equipped with a powerful symbol database editor and fault diagnosis function, which can help developers save time and maximize production efficiency. PL
C has small size, light weight, and is easy to install.? The input and output system of PLC can intuitively reflect the changing status of on-site signals and the operation of the control system through various means
Status, such as internal working status, communication status, 1/0 point status, abnormal status, and power status. There are some eye-catching explanations that are very useful for operating and maintaining personnel monitoring systems
Li.
The input signal types of programmable controllers can be switching values, analog values, and digital values. Generally speaking, the input unit consists of two parts: one is the interface electrical device connected to the controlled device
The other part is the input image register.
The input unit receives various control signals from user devices, such as limit switches, operation buttons, selection switches, jump switches, and other sensors. Through the interface circuit, these signals are converted
Replace it with a signal that the central processing unit can recognize and process, coexisting with the input image register. At runtime, the CPU reads input information from the input image register and processes it
The results are stored in the output image register.
In order to prevent various interference signals and high-voltage signals from entering the PLC, affecting its reliability or causing equipment damage, the on-site input interface circuit is generally isolated using optoelectronic coupling circuits. Optoelectronic coupling
The key component of the circuit is an optocoupler, usually composed of light-emitting diodes and phototransistors.
Usually, PLC input types can be DC (DC24V), AC and AC and DC. The power supply for the input circuit is provided externally. Some can also be provided internally by the PLC. For DC input, according to
The form of field input interface circuit is divided into two types: source input and destination input. The vast majority of PLCs in Europe and the United States use leakage inputs, while the vast majority of PLCs in Asia use source inputs
Enter
The PLC is connected to the control object through input/output terminals. The input and output terminals of PLC usually have three organizational forms, namely sink type, group type, and separate type. Most of the input terminals of PLC use a sink
Point type, some PLCs adopt grouping type to increase flexibility in use.
Collect temperature, pressure, and flow rate, and control the heating flow rate based on the collected data, achieving the goal of energy conservation. Adjust the opening of the electric valve in the original pipeline network according to the changes in outdoor climate
Control the temperature return of the secondary pipeline network in a timely manner. By scheduling the given control curve, the operating parameters of each heat exchange station are within the given range. Colleagues, the central control room will adjust the
Dispatched electric valves are remotely controlled to adjust operating parameters. The gprs dtu system configuration can achieve temperature control and frequency conversion of filling remote control water pumps. The upper computer chooses to configure the King configuration software, which is combined with the database to store and analyze all data, and can cooperate with the optimization software for priority control.

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