ABB NTU-7C2 I/O Controller Termination Unit

ABB NTU-7C2 I/O Controller Termination Unit

Basic Information

Model and name: ABB NTU-7C2 I/O Controller Termination Unit is an I/O controller terminal unit manufactured by ABB, which is an important part of its industrial automation control.

System: The Termination Unit is usually part of the ABB Symphony® Plus system, which is designed for industrial control and monitoring applications, and works in conjunction with other modules for precise control and monitoring of industrial processes.

Functional features

Signal processing and transmission

Multiple Signal Types Support: Capable of processing and transmitting multiple types of I/O signals, including digital and analogue signals, to meet the signal access requirements of different industrial equipment and sensors, and to ensure that the system can comprehensively collect and control various types of field data.

Signal Conversion and Conditioning: Convert and condition the input signals, such as converting the signals from the field equipment to the standard signal level that the controller can recognise and process, and at the same time filtering and amplifying the signals to improve the quality and stability of the signals and ensure the accuracy of the signal transmission.

Control function

I/O Control Logic Implementation: As the terminal unit of I/O controller, it has certain control logic function, which can carry out logic operation and processing on input signals and output corresponding control signals according to the preset control strategy and procedure, so as to realise the automation control of on-site equipments, such as the start-stop control of motors and the opening control of valves.

Work with the controller: work closely with ABB's controllers to achieve data interaction through the high-speed communication bus, receive the controller's commands and feedback the field data to the controller, constituting a complete control loop to ensure the coordinated operation and efficient performance of the entire control system.

Reliability and Stability

Electrical isolation protection: Provide good electrical isolation between the input and output signals to prevent external interference signals from entering the control system, while avoiding the impact of internal failures on external equipment, to ensure the safe and stable operation of the system, the isolation voltage level is generally higher, can be adapted to the complex industrial electrical environment.

Redundancy design: some application scenarios support redundant configuration, when the primary channel or module failure, the backup channel or module can automatically switch to put into use to ensure uninterrupted operation of the system, improve the reliability and availability of the system, reduce the production interruption time caused by equipment failure.

Fault diagnosis and alarm: with fault diagnosis function, it can real-time monitor itself and the working status of the connected equipment, once the fault is detected, it will send out an alarm signal in time to notify the maintenance personnel to deal with it, and at the same time, it can also provide detailed information about the fault, which can help the maintenance personnel to locate and solve the problem quickly, and reduce the difficulty of the system's maintenance and the cost of time.

Technical Parameters

Electrical parameters

Working voltage range: general working voltage range is wide, such as 18V - 30V DC, can adapt to different power supply conditions, to ensure that in the industrial field of various power fluctuations can still work stably.

Power Consumption: The overall power consumption is moderate, usually within a certain power range, such as 10W - 20W or so, the specific power consumption depends on the actual workload and configuration.

Signal level: Support a variety of standard digital signal levels, such as TTL, CMOS, etc., as well as common analogue signal ranges, such as 0 - 5V, 0 - 10V, 4 - 20mA, etc., to meet the requirements of different types of sensors and actuators signal interface.

Performance Parameters

Signal Processing Speed: With fast signal processing speed, it can complete the acquisition, processing and transmission of a large number of I/O signals in a short period of time to ensure the real-time and response performance of the system, and the general signal processing cycle can reach milliseconds or even shorter.

Number of channels and capacity: Equipped with multiple I/O channels, the number of channels may vary according to specific models, such as 8 digital input channels, 8 digital output channels and 4 analogue input channels, etc., which can meet the demand for the number of I/O points of industrial control systems of different scales.

Communication interface: Usually, high-speed and reliable communication interface is used to connect with the controller, such as industrial Ethernet, Profibus, etc. The communication rate can reach a high level, such as 100Mbps or even higher, which ensures the rapid transmission of large amounts of data and the efficient operation of the system.

Environmental parameters

Operating temperature range: it can work normally in a wide temperature range, generally -20℃ - +70℃, adapting to a variety of harsh environmental conditions in the industrial field to ensure the reliability and stability of the equipment in high temperature, low temperature and other environments.

Humidity range: the relative humidity range is usually 5% - 95% (non-condensing), can be stable in the humid industrial environment, not affected by changes in humidity.

Protection level: with a certain protection level, such as IP20 or higher, can effectively prevent the intrusion of foreign objects and personnel accidental contact with the internal circuitry, to protect the safety and reliability of the equipment.