ABB AI845 is a high-precision analog input module widely used in the field of industrial automation control. Here are some of the main features and technical parameters of ABB AI845:
Functional description: ABB AI845 analog input module converts analog signals into digital signals for use in control systems. The module has 8 channels, and the input voltage and current can withstand at least 11 volts of overvoltage or overvoltage. The input voltage resistance is greater than 10M ohms, and the input current resistance is 250 ohms. It can collect analog quantities (such as voltage, current, thermocouples, thermal resistors, temperature and other values) and transmit them to the computer through the RS-485 bus. In addition, it can also convert various types of analog signals into standard 4-20mA signals, which are suitable for the measurement and control of parameters such as temperature, pressure, flow, and liquid level.
Technical parameters:
Input signal: 4-20mA
Output signal: 4-20mA
Power supply voltage: 24VDC
Accuracy: ±0.2%
Operating temperature range: -40°C to 85°C
Dimensions: 70mm x 100mm x 22.5mm (one specification), another specification is product net depth/length 102mm, product net height 119mm, product net width 45mm
Weight: about 200g (one specification), another specification is product net weight 0.2kg
Interface type: terminal block
Communication protocol: ABB AI845 adopts MODBUS RTU protocol, which realizes unified docking with industrial field data acquisition and is also convenient for programming. Because it uses RS-485 interface as the communication interface, it can transmit more analog signals in multiple modules, and can be dispersedly configured on 485 lines, distinguished by address code, and can be directly connected to the configuration software of MODBUS RTU protocol.
