ABB AI845｜Analog Input Module｜

AI845 3BSE023675R1

Channel configuration
8-channel single ended unipolar input; When paired with dedicated terminals TU844/TU845, each channel can independently select current/voltage; The common terminal board should have a unified current or voltage and should not be mixed with ABB.
Support signal
Current: 4-20mA, 0-20mA (two-wire transmitter)
Voltage: 1-5V, 0-5V DC
Collection performance
AD resolution: 12 bits
Machine accuracy: ≤± 0.1% FS, temperature drift ≤ 50ppm/℃
Full channel refresh cycle: 10ms
Power frequency suppression 50/60Hz>40dB, maximum length of 600 meters for long lines
Voltage input impedance>10M Ω; current built-in 250 Ω sampling resistor
Input withstand 11V overvoltage without damage, single channel hardware current limiting short circuit protection
Core advantages of HART
Built in HART direct circuit; Each channel is equipped with an independent 24V current limiting transmitter for power supply, which directly drives a 2/3-wire HART smart instrument. The handheld device can read range, diagnosis, and secondary variable ABB.

Application
Redundant acquisition of key measuring points for ABB 800xA/AC800M gas turbine and thermal power main control
Simultaneously connect voltage and current mixed HART intelligent transmitters to chemical and oil and gas equipment
Long term stable monitoring of pressure/flow/liquid level in boilers, steam turbines, and water treatment systems

ABB AI845｜Analog Input Module｜