Description

ABB AO820 4-channel analog output module

Characteristics
Output channels and signal range: It features 4 bipolar analog output channels, each of which can be configured for current or voltage output. The output current range includes -20mA to + 20mA, 0mA to 20mA, and 4mA to 20mA. The output voltage range includes -10V to + 10V, 0V to 10V, and 2V to 10V.
Independent isolation channels: Each channel is independently isolated for current, enhancing safety, preventing electrical noise interference, and improving system stability.
Data monitoring and diagnosis: To supervise the communication with the digital-to-analog converter, the output data will be read back and verified, and the open-circuit diagnostic information will be continuously read. If the process voltage disappears, a channel error signal will also be provided, and the error signal can be read through the module bus.
Output protection: The output features short-circuit protection and current limiting functions, which can prevent damage to the module and external devices due to accidental short circuits or overloads.
Multiple MTU compatibility: It can be used in conjunction with various module terminal units (MTU) such as TU810V1, TU812V1, TU814V1, TU830V1, and TU833, achieving flexible connection and configuration.
Superior technical parameters: Resolution is 12 bits (including sign bits); When the output load current is ≤550Ω, and when the output voltage is ≥5kΩ. The maximum error voltage is 0.1%, the typical value is 0.1% when the current is 250Ω, and the maximum value is 0.15%. The maximum temperature drift is 90ppm/°C. The rise time is less than 0.7ms; Update cycle time ≤1.5ms; Rated insulation voltage: 50V Dielectric test voltage: 500V AC; Typical power consumption is 6W.

Application scenarios
Industrial automation control: In automated production lines, it can be used to control motor speed, valve opening degree, drivers and other equipment, achieving precise regulation and control of various physical quantities in the production process, ensuring the stability of the production process and the consistency of product quality.
Process control system: In the process control of industries such as petroleum, chemical engineering, and power, it can output precise analog signals according to process requirements, control parameters such as temperature, pressure, and flow rate, keep the production process in the best state, and improve production efficiency and safety.
Test and measurement system: In a laboratory or testing environment, it can serve as a signal source to provide precise analog signals for testing equipment, which is used for calibrating instruments, verifying system performance, etc.