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ABB AI845 3BSE023675R1｜Analog Input Module｜
AI845
1. Channel and signal capability
Channel: 8-channel single ended non differential input, with a set of 8-channel ground isolation (50Vrms isolation withstand voltage) for the entire module
Support signal (different configuration rules for different bases)
Paired with TU844/TU845 redundant base: Single channel independent configuration of current/voltage
Current: 0-20mA, 4-20mA; Voltage: 0-5V, 1-5V
Ordinary base TU810/TU830: All modules are unified as current or voltage, and cannot be mixed
Input impedance: Built in 250 Ω sampling resistor in current mode; Voltage mode ≥ 10M Ω
Transmitter power supply: Each channel has independent current limiting power supply, compatible with two-wire HART smart transmitters, supports HART direct communication to read instrument multivariable and fault diagnosis
Overvoltage protection: Channel withstand ± 11VDC overvoltage/undervoltage impact
2. Collection performance
ADC resolution: 12 bits
Measurement accuracy: ± 0.1% FS (25 ℃ room temperature)
Single channel sampling rate: approximately 10Hz
Built in diagnosis: 4-20mA disconnection detection, transmitter power supply failure, channel over range, module communication failure, all uploaded to the controller screen
3. Electrical, mechanical, and environmental
Backpanel power supply: S800 Modulus Bus 24VDC, overall power consumption ≤ 5W
Dimensions: 45mm wide x 119mm high x 102mm deep (excluding terminal connectors)
Net weight: 0.23kg
Protection level: IP20
Working temperature: -40 ℃~+70 ℃, storage -40 ℃~+85 ℃
Certification: CE, UL, RoHS, compliant with EN61010-1 industrial safety standard
Functional features: Supports module redundancy hot standby, supports hot plugging and online replacement
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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