ABB TU813

Details

Product Overview

 ABB TU813 is a multifunctional device, mainly used in industrial automation control, power system monitoring and other application fields. Its design is mainly to facilitate and ensure the accurate monitoring and control of relevant physical quantities and processes.

Function Introduction

Data acquisition function: During the signal data acquisition process, a large number of signals can be collected with uniform high resolution. An example of signal data acquisition is picking up temperature signals. The weak signal output by the temperature sensor will be amplified and purified, and then mapped to the digital domain. Its acquisition may reach ±0.1%, although this may vary slightly depending on the configuration of different product models. This should enable accurate acquisition and quantification of temperature values, which becomes very important in industries that rely on strict digital control of temperature, such as temperature regulation in chemical reactions or food processing. The acquisition of other physical quantities, such as pressure and flow, will also have a similar level of accuracy. At the same time, data acquisition may actually involve different types of physical quantity signals so that multivariable monitoring of parameters can be performed simultaneously.

Data processing capability: Real-time processing of acquired data. This can filter out noise defects from the collected data. For example, at industrial sites, due to the start-up of various electric drive devices, a large amount of electromagnetic interference will be generated, which may begin to appear on the output signal of the sensor. TU813 should more successfully use digital filtering algorithms such as mean filtering and median filtering to remove it, so as to obtain a more accurate and reliable data set.

Convert and calculate data: For example, the collected current signal can be converted into the corresponding physical quantity through the sensor's range and conversion formula. In addition, the collected data can be calculated multiple times according to the calculation rules defined by the user. For example, to calculate the thermal efficiency, a combination of parameters such as temperature and flow must be used for complex calculations. TU813 can perform these calculations internally and output the results.

Control capability: TU813 has powerful control activation functions. Simple logic control can be performed through its digital output interface; for example, setting a high temperature limit. When the temperature exceeds this limit, a digital signal is output to drive the relay of the cooling device to enable the cooling device to cool. Analog control can output precise analog signals according to a predetermined control strategy. For example, in a system with automatic flow control, the deviation between the flow set value and the current flow can be controlled.

Communication capability: As mentioned earlier, the RS-485 communication interface has a variety of protocols, including the Modbus RTU protocol. This allows for easy communication with the host software or any other device that has the ability to use Modbus RTU communication. In a wider industrial automation system, the host computer can extend polling to each TU813 component through the communication network to obtain processed data and similarly issue control commands based on the parameters it controls. This makes remote monitoring and control systems possible and allows operators to further manage the entire industrial process from a central control room.

Installation

Before installation, please ensure that the installation environment meets the requirements of the equipment. Avoid installation in places with high temperature, high humidity, corrosive gases or strong electromagnetic interference. It is generally recommended to install in a cabinet with good air circulation and ventilation. The equipment is fixed in this installation position and can be fixed with screws or other appropriate methods. Please refer to the manual in conjunction with the physical diagram to understand the input connection, interface type and allocation to ensure correct connection. For example, when connecting the RS-485 communication interface, please first confirm that the two signal lines (A, B) are connected correctly, otherwise communication will not be possible.

Configuration

Some configuration is required after power-on, which can be performed through the supporting software or the host computer control system. First, set the communication parameters, such as baud rate, data bit, stop bit, check bit, etc. The common baud rates in the Modbus RTU protocol are 9600bps and 19200bps; the general data bit is 8 bits, the stop bit is generally 1 or 2, and the check bit is odd, even or no check. These parameters need to be consistent with the parameters of other devices in the communication system for successful communication. The next step is to set the input and output parameters. For the analog input interface, set the appropriate sensor type and range for each channel. For example, if a 0-100℃ temperature sensor is used, select the temperature sensor type in the device configuration and set the range to 0-100℃. For the output interface, set the signal type-digital output or analog output-initialization, etc. For example, for the digital output interface, set the initial high level or low level.