The digital input terminal panel is a key component in industrial automation control systems used to receive and process digital signals from field devices. It is a specialized hardware device designed to connect various discrete sensors, switches, or other digital signal sources and convert these signals into a format that the control system can understand and process.
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9761-210 also known as:
Digital input terminal panel 9761-210
9761-210 Input/output module controller module
Digital terminal 9761-210
9761-210 Digital relay
Logic input converter 9761-210
The 9761-210 digital input terminal panel is a hardware device used in the field of industrial automation, which is part of control systems such as PLC or DCS systems. The main function of this panel is to receive input signals from discrete sensors, switches, or other digital signal sources, and convert these signals into a form that the control system can recognize and process.
Concept analysis:
Digital input:
It refers to discrete signals from on-site equipment, usually representing switch states (on/off, high/low, true/false, etc.). These signals are not analog quantities (such as continuous changes in temperature, pressure, etc.), but have clear and discrete states.
Terminal panel:
It refers to a physical interface installed in a control system, used to connect external devices to circuit boards or processing units within the system. Terminal panels typically have multiple input and output channels, each of which can be independently configured to receive or send specific types of signals.
Control system integration:
The 9761-210 digital input terminal panel is usually integrated with the main control system (such as PLC, DCS, etc.) as part of the control system input/output (I/O) module. It allows control systems to monitor and control discrete events and states in various industrial processes.
Reliability and Security:
Due to the high requirements for reliability and safety in industrial automation systems, the 9761-210 digital input terminal panel is usually designed to have high electrical isolation, anti-interference ability, and fault diagnosis function to ensure stable and reliable operation in harsh industrial environments.
The working principle of the 9761-210 digital input terminal panel:
Signal acquisition:
Connecting external devices:
The 9761-210 digital input terminal panel is connected to an external digital signal source through its input interface (also known as input channel or input point). These signal sources typically include discrete sensors (such as limit switches, proximity switches, buttons, etc.) and switching devices.
Signal detection:
When the state of external devices (such as sensors or switches) changes, corresponding electrical signals are generated. These electrical signals may be high or low levels, corresponding to 1 and 0 in digital signals.
Signal conversion:
Electrical isolation:
In order to protect the control system from external electrical interference, the 9761-210 digital input terminal panel usually performs electrical isolation on the input signal. This means that the input signal is not directly electrically connected to the control system, but transmitted through isolated circuits.
Signal conditioning:
Before the signal enters the control system, the 9761-210 digital input terminal panel may also adjust the signal. This includes signal amplification, filtering, shaping, and other processing to ensure the accuracy and stability of the signal.
Signal conversion:
After electrical isolation and signal conditioning, the input signal is converted into a digital signal that the control system can recognize and process. This usually involves the process of converting analog signals (although mainly discrete signals in this scenario, conceptually similar) into digital signals, although in the case of digital inputs, this step may mainly be to confirm the signal's state (on or off).
Signal transmission:
Data transmission:
Once the signal is converted into digital form, it can be transmitted through the communication interface between the 9761-210 digital input terminal panel and the control system. These interfaces may include serial communication interfaces (such as RS-232, RS-485, etc.), Ethernet interfaces, or other industrial communication protocol interfaces.
Signal processing:
In the control system, the received digital signals will be further processed to execute the corresponding control logic and algorithms. For example, if a switch is activated (i.e. input signal is 1), the control system may trigger an action or change the state of a device.
Function and features:
Signal acquisition:
The 9761-210 digital input terminal panel can collect real-time digital signals from field devices, such as button presses, switch status changes, etc.
Signal conversion:
Convert the collected raw digital signals into a format that the control system can recognize for further processing and analysis.
Isolation and protection:
Provide electrical isolation function to protect the control system from external electrical interference and potential damage.
Programmability:
Some models of 9761-210 terminal panels may support software configuration of parameters and behavior for each input channel to meet the needs of different applications.
Reliability:
Designed for long-term stable operation in harsh industrial environments, with high reliability and durability.
The 9761-210 digital input terminal panel is widely used in industrial automation, process control, robot control, safety systems and other fields. They are an important component of implementing automated control and monitoring systems, ensuring the smooth progress of the production process and the safe operation of equipment. In these application scenarios, they achieve real-time monitoring and control of on-site conditions by connecting various sensors and switching devices, which is an indispensable part of the industrial automation field.
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The company has a registered capital of tens of millions, a five-star office environment, and hundreds of employees. Fengyun focuses on the four major system fields of DCS, PLC, robotics/large servo, and mainly produces various modules/cards, controllers, touch screens, and servo drives.
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Supply imported genuine products and professional discontinued accessories.
Company advantages:
Supply imported genuine products and professional discontinued accessories.
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