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ABB · S800 I/O ANALOG INPUT
ABB AI845-EA 3BSE023675R2 S800 I/O Analog Input Module
An eight-channel analog input module for current or voltage measurement in single or redundant ABB control-system architectures.
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MODULE CLASS
Analog input
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CONTROL ROLE
HART-compatible process signal acquisition
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REDUNDANCY-READY ANALOG ACQUISITION
Eight HART-capable channels for current and voltage signals
AI845 supports unipolar process inputs, supervised transmitter power and single or redundant S800 I/O operation.
Official technical data
| Product type |
Analog input module |
System family |
S800 I/O |
| Input channels |
8 |
Current signals |
0–20 mA / 4–20 mA |
| Voltage signals |
0–5 V / 1–5 V DC |
Resolution |
12 bit |
| HART support |
Yes, pass-through |
Redundancy |
Single or redundant operation |
| Isolation |
One group of 8 isolated from ground |
Article number |
3BSE023675R2 |
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Safety & Compliance
Isolate field and transmitter power before connecting the module. Verify the selected MTU, current/voltage mode, grounding and redundancy configuration, then observe ESD precautions during replacement.
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Performance & Efficiency
Eight configurable channels, HART pass-through and supervised transmitter supply reduce auxiliary wiring. Redundant operation supports high-availability process measurement without duplicating engineering structures.
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Brand characteristics
ABB S800 I/O combines modular signal interfaces, controller integration and comprehensive diagnostics for distributed process automation.
| Flexible I/O |
Common mechanics support varied analog and digital modules. |
| Redundancy support |
Selected modules operate in single or redundant architectures. |
| Lifecycle engineering |
Article numbers and MTUs support controlled configuration management. |
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Application fields
AI845 acquires standard process current and voltage signals where HART visibility or redundant S800 I/O operation is required.
| Process plants |
Transmitter input for pressure, flow, level and temperature. |
| Utility systems |
Redundant measurement in power and water auxiliaries. |
| Asset management |
HART pass-through for device diagnostics and setup. |
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01 · IDENTIFY
Provide AI845-EA, 3BSE023675R2, installed MTU and required quantity.
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02 · VERIFY
Confirm S800 I/O version, signal mode, HART need and redundancy arrangement.
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03 · QUOTE
Review pricing, lead time, warranty and delivery terms.
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04 · DISPATCH
Complete order checks, protective packing and shipment planning.
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