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Description

The ABB AI820 (3BSE008544R1) is a high-performance analog input module designed for the S800 I/O system. This module provides four channels of analog input, each featuring individual galvanic isolation to ensure signal integrity and protection against ground loops in industrial control environments. It is engineered to handle a variety of standard process signals, making it a versatile component for distributed control systems.

Features

  • 4 individually galvanically isolated analog input channels.
  • High-resolution 14-bit plus sign conversion for precise signal monitoring.
  • Supports a wide range of input signals including -20 to +20 mA, 0(4) to 20 mA, -10 to +10 V, and 0(2) to 10 V.
  • Integrated input filtering with a rise time (0-90%) of 40 ms.
  • Robust dielectric isolation tested to 500 V a.c.
  • Designed for seamless integration with the S800 I/O Modulebus.

Technical Specifications

Model AI820 (3BSE008544R1)
Channels 4
Resolution 14 bit plus sign
Signal Ranges -20 to +20 mA, 0(4) to 20 mA, -10 to +10 V, 0(2) to 10 V
Input Filter 40 ms (0-90% rise time)
Power Dissipation 1.7 W
Current Consumption (5V) 80 mA
Current Consumption (24V) 70 mA
Dielectric Test Voltage 500 V a.c.

Installation Guidelines

  • Ensure the system power is disconnected before installing or removing the module from the I/O rack.
  • The AI820 should be installed in a clean, dry environment protected from excessive dust and corrosive gases.
  • Use shielded twisted-pair cabling for analog signals to minimize electromagnetic interference (EMI).
  • Maintain proper grounding practices for the S800 I/O station to ensure the effectiveness of the galvanic isolation.
  • Verify that the module is securely seated in the terminal unit and that all field wiring is terminated according to the provided wiring diagram.

FAQ

What is the primary function of the AI820 module?

The AI820 is an analog input module used to interface field sensors with the ABB S800 I/O system, converting analog voltage or current signals into digital values for processing by the controller.

Does this module support individual channel isolation?

Yes, each of the four channels on the AI820 is individually galvanically isolated, which helps prevent electrical noise and interference from affecting adjacent channels.

What is the power requirement for this module?

The module consumes 80 mA from the 5 V Modulebus and 70 mA from the 24 V external power supply.

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