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ABB AI815 3BSE052604R1 Analog Input Unit - HART

The ABB AI815 3BSE052604R1, also cataloged as the AI815 Analog Input Unit, provides 8-channel analog signal acquisition with HART pass-through communication for ABB S800 I/O system platforms. The module processes unipolar single-ended current and voltage inputs for industrial measurement loops.

Hardware Specifications

Parameter	Specification
Model	AI815 3BSE052604R1
Brand	ABB
Product Type	Analog Input Unit - HART
Origin	Sweden
Weight	0.25 kg
Dimensions	4.5 x 11 x 11.8 cm (estimated shipping size)
Input Channels	8 channels
Signal Type	Unipolar single ended
Input Signal Range	0-20 mA, 4-20 mA, 0-5 V, 1-5 V DC
Resolution	12 bit
Isolation	1 group of 8 channels isolated from ground
Transmitter Supply	Current limited supply per channel
Communication Function	HART pass-through communication
Mounting Platform	ABB S800 I/O system

Backplane Bus Communication and I/O Density Scaling

The ABB AI815 module operates within the S800 I/O architecture and exchanges process data through the I/O system backplane communication interface. Therefore, the module supports structured channel allocation for distributed control configurations.

The unit provides 8 analog input channels with single-ended unipolar signal handling. Additionally, the HART pass-through function allows communication between compatible field transmitters and higher-level control systems without separate HART multiplexing hardware.

The module design supports I/O density scaling by integrating multiple analog channels into compact S800 I/O stations. Furthermore, channel grouping and grounding isolation reduce interference between field wiring and control electronics.

Frequently Asked Questions

Q: What input signals can the ABB AI815 3BSE052604R1 process?
A: The AI815 supports 0-20 mA, 4-20 mA, 0-5 V, and 1-5 V DC unipolar single-ended analog input signals.

Q: Does the AI815 provide HART communication support?
A: Yes. The module provides HART pass-through communication, allowing HART field device data transmission through the analog input channels.

Q: How are the input channels isolated in the AI815 module?
A: The module provides one group of 8 channels isolated from ground. Field wiring practices should maintain proper shielding and grounding requirements.

Field Installation Guidelines

• Install the AI815 module according to ABB S800 I/O system mechanical and electrical installation requirements.
• Verify that field signal wiring matches the configured input type, including current or voltage measurement ranges.
• Use shielded cables for analog signal connections in environments with electrical noise sources.
• Connect cable shields according to the site grounding standard to reduce electromagnetic interference.
• Separate analog signal wiring from high-voltage power cables and switching circuits.
• Confirm terminal connections before applying field power to transmitters and input loops.
• Check HART communication routing after completing loop wiring and controller configuration.

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