ABB AI825 3BSE036456R1 high-precision module

Product Overview

The AI825 (Part No: 3BSE036456R1) is a high-precision, 4-channel analog input module featuring individual channel-to-channel isolation. It supports bipolar and unipolar signals, including $\pm$20 mA and $\pm$10 V. With its 14-bit resolution and superior noise rejection, the AI825 is the ideal choice for critical applications where signal integrity and protection against ground loops are paramount.

Technical Specifications

• Manufacturer: ABB

• Type Designation: AI825

• Product ID: 3BSE036456R1

• Channels: 4 Individually Isolated

• Signal Ranges: $\pm$20 mA, 0(4)..20 mA, $\pm$10 V, 0(2)..10 V

• Resolution: 14 bit + sign

• Accuracy: Max 0.1%

• Update Cycle Time: <10 ms

• Isolation Voltage: 250 V (Rated), 1900 V d.c. (Channel-to-Channel)

• Input Impedance: 50 $\Omega$ (Current) / 10 M$\Omega$ (Voltage)

• CMRR: 120 dB (Excellent noise immunity)

• Power Dissipation: Typ. 2.5 W

• Condition: New with Original Package

• Warranty: 12 Months

• Shipping Port: Shanghai, Xiamen

Typical Applications

• Critical Signal Acquisition: High-precision monitoring where electrical interference or different ground potentials between sensors exist.

• Mixed Signal Environments: Handling both voltage and current inputs on a single module while maintaining total electrical separation.

• High-Voltage Areas: Substation or heavy industrial monitoring where high dielectric strength (up to 3250 V d.c. to ground) is required for safety.

• Complex Control Loops: Fast-acting processes requiring high resolution and rapid update times under 10 ms.