ABB AI625 Analog Input 16ch, 12 Bit, 4-20 mA

ABB AI625 Analog Input 16ch, 12 Bit, 4-20 mA

Product Positioning

ABB AI625 Analog Input 16ch, 12 Bit, 4-20 mA is a 16-channel analog input module specially designed for industrial automation data acquisition, focusing on converting 4 - 20mA standard analog current signals into digital signals to provide accurate data support for PLC, DCS and other control systems, widely used in electric power, chemical industry, manufacturing industry and other industrial scenarios that require real-time monitoring of analog data. Widely used in electric power, chemical industry, manufacturing industry and other industrial scenarios that require real-time monitoring of analogue data, is an important component to achieve accurate control and efficient management of industrial automation.

Core Technical Parameters

Channel and Signal Parameters

Number of channels: 16 independent analog input channels, can simultaneously collect 16 4-20mA analog current signals to meet the demand for simultaneous monitoring of multiple parameters, suitable for multi-node data collection in complex industrial systems.

Signal type: only support 4 - 20mA current signal input, the signal has the advantages of strong anti-interference ability, long transmission distance, etc., commonly used in industrial field sensor signal transmission, such as pressure sensors, flow sensors and other equipment signal acquisition.

Resolution: 12-bit resolution, the input signal can be converted to 4096 (2^12) discrete digital values, the measurement accuracy can reach ± 0.1% of the full scale, to ensure the accuracy of data acquisition, can effectively capture the signal changes.

Performance Parameters

Sampling rate: each channel sampling rate of 500Hz, can quickly respond to signal changes, for dynamic changes in the analogue (such as real-time flow fluctuations in the pipeline) can be collected in a timely manner to provide real-time data for the control system support.

Input Impedance: The input impedance is less than 250Ω, which meets the standard requirement of 4-20mA current loop, ensuring the stability of current during signal transmission and reducing signal attenuation and interference.

Isolation characteristics: electrical isolation design between channels and between channels and systems, isolation voltage up to 500V AC, effectively preventing signal crosstalk and the spread of electrical faults, improve system stability and safety, especially for industrial sites with complex electromagnetic environments.

Communication and interface parameters

Communication protocol: support Modbus RTU, Profibus DP and other mainstream industrial communication protocols, which is convenient to integrate with different brands of controllers (e.g. ABB, Siemens, Schneider and other PLCs) and the host computer system, and realise rapid data transmission and interaction.

Communication interface: Equipped with RS485 interface (for Modbus RTU communication), DP interface (for Profibus DP communication), the interface adopts industrial-grade design, has good anti-interference ability, supports long-distance communication, and ensures stable data transmission.

Wiring: detachable terminal block wiring, each channel corresponds to an independent terminal, clear identification, easy to install, debug and maintain, support hot-swappable operation, can be replaced when the system is running the module, reduce downtime.

Mechanical and environmental parameters

Size and installation: compact design, width of only 25mm (standard rail mounting specifications), saving space in the control cabinet. Support 35mm DIN rail mounting, easy installation process, can be installed side by side with other modules to achieve flexible system expansion.

Protection grade: IP20, suitable for installation in indoor control cabinets and other places with good protection environment, can prevent solid foreign objects with a diameter of more than 12mm from entering, and avoid the accumulation of dust affecting the performance of the module.

Working environment: working temperature range - 40℃ - 70℃, storage temperature - 40℃ - 85℃, can adapt to harsh industrial environments; relative humidity 5% - 95% (non-condensing), with moisture-proof ability, high temperature, low temperature, humidity and other environments can still be stable operation.

Technical Advantages

High-precision data acquisition

Accurate signal conversion: With 12-bit high resolution and advanced A/D conversion technology, it can accurately convert 4-20mA analogue signals into digital signals, and with the auto-calibration function, it can periodically correct the measurement error to ensure stable long-term operation accuracy and provide a reliable data base for industrial control.

Low-noise design: Built-in digital filtering algorithm can effectively suppress high-frequency noise and interference in the signal, and different filter strengths, such as mean filter, median filter, etc., can be selected through the software configuration, so as to make the collected data smooth and stable, which is suitable for application scenarios with high requirements on signal quality.

Highly reliable operation