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ABB AI820 3BSE008544R1 Analog Input Module

The ABB AI820 3BSE008544R1, also cataloged as the AI820 Analog Input Module, operates as a dedicated hardware component for analog signal acquisition within ABB S800 I/O systems. It provides four individually galvanically isolated input channels for current and voltage measurement with 14 bit plus sign resolution.

Hardware Specifications

Parameter	Specification
Model	AI820 3BSE008544R1
Brand	ABB
Product Type	Analog Input Module
Origin	Sweden
Weight	0.18 kg
Dimensions	4.5 x 10.5 x 12 cm
Operating Temp	Not specified
Power Consumption	1.7 W
Signal Specification	-20 to +20 mA, 0(4) to 20 mA, -10 to +10 V, 0(2) to 10 V
Number of Channels	4 channels
Channel Isolation	Individually galvanic isolated
Resolution	14 bit plus sign
Input Range Under/Over Range	+/- 15%
Input Filter Rise Time	40 ms (0 to 90%)
Dielectric Test Voltage	500 V AC
Current Consumption +5 V ModuleBus	80 mA
Current Consumption +24 V External	70 mA
Input Impedance	250 ohm for current input
Current Input Capability	20 mA
Voltage Input Capability	10 VDC

ABB Industrial Control and I/O Integration Characteristics

The ABB AI820 module interfaces with ABB S800 I/O architectures through ModuleBus communication. It processes bipolar and unipolar analog signals while maintaining galvanic isolation between input channels. Therefore, the module supports separated field signal measurement for industrial control applications requiring isolated analog acquisition.

The AI820 follows ABB industrial I/O density scaling principles by providing four configurable analog channels in a compact module format. In addition, its 14 bit plus sign conversion architecture allows the controller system to process positive and negative measurement values for voltage and current inputs.

The module supports backplane bus communication velocity within the ABB S800 I/O platform and maintains firmware flash compatibility according to the installed controller and system configuration. Consequently, engineering teams can integrate the module into existing ABB control environments with defined hardware revision management.

Frequently Asked Questions

Q: What analog signals can the ABB AI820 3BSE008544R1 measure?
A: The module accepts current signals of -20 to +20 mA and 0(4) to 20 mA, as well as voltage signals of -10 to +10 V and 0(2) to 10 V.

Q: Does the AI820 provide electrical isolation between input channels?
A: Yes. The AI820 provides four individually galvanically isolated input channels to separate field signal circuits.

Q: What power sources supply the AI820 module?
A: The module receives power through the ABB ModuleBus system with +5 V ModuleBus current consumption of 80 mA and requires +24 V external supply current of 70 mA.

Field Installation Guidelines

• Install the AI820 module in an ABB S800 I/O station with correct ModuleBus connection and approved terminal configuration.
• Verify field wiring polarity before connecting current and voltage input signals.
• Use shielded signal cables for low-level analog measurement circuits where electromagnetic interference may affect signal accuracy.
• Connect cable shields according to the plant grounding standard to reduce electrical noise coupling.
• Separate analog signal wiring from high-current power cables and switching circuits.
• Confirm the configured input range matches the connected field transmitter or measurement device before commissioning.
• Check module status indicators after installation to verify correct communication with the controller system.

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