PRODUCT INFORMATION
Product Overview
The ABB AI820 3BSE008544R1 S800 I/O Analog Input Module provides four differential, bipolar input channels for process instrumentation. Each channel can be configured independently for current or voltage signals. The module converts analog field signals with 14-bit plus sign resolution. Power to the input stages is converted directly from 24 V DC on the ModuleBus. All four input channels are isolated from the ModuleBus in one common group. Groupwise isolation provides a 50 V reference insulation voltage against ground.
The module distributes external transmitter supply voltage across each channel. This layout simplifies wiring when connecting external two-wire transmitters with extended MTU bases. The current input circuits include 250-ohm sense resistors rated at approximately 5 Watts. This design temporarily protects an individual channel if accidentally connected to a 24 V source. Current inputs withstand accidental normal mode voltages up to 30 V DC. Diagnostic supervision monitors internal power and reports module errors, module warnings, and channel faults.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Signal specification | -20..+20 mA, 0(4)..20 mA, -10..+10 V, 0(2)..10 V |
|---|
| Number of channels | 4 |
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| Signal type | Bipolar differential |
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| HART | No |
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| SOE | No |
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| Redundancy | No |
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| High integrity | No |
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| Intrinsic safety | No |
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| Mechanics | S800 |
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| Resolution | 14 bit plus sign |
|---|
| Input impedance | 200 kΩ ± 25% (voltage mode, common mode) 800 kΩ ± 25% (voltage mode, normal mode) 250 Ω (current input) |
|---|
| Isolation | Groupwise isolated from ground (RIV=50 V) |
|---|
| Under/over range | ± 15% |
|---|
| Error | Max. 0.1% |
|---|
| Temperature drift | Voltage: Max. 70 ppm/°C Current: Max. 50 ppm/°C |
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| Input filter (rise time 0-90%) | 40 ms |
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| Current limiting | Transmitter power can be current limited by the MTU |
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| Maximum field cable length | 600 meters (656 yards) |
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| Dielectric test voltage | 500 V a.c. |
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| Power dissipation | 1.7 W |
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| Current consumption +5 V Modulebus | 80 mA |
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| Current consumption +24 V Modulebus | 0 |
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| Current consumption +24 V external | 70 mA |
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| Front LED’s | F(ault), R(un), W(arning) |
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| Supervision | Internal Power Supply |
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| Status indication of supervision | Module Error, Module Warning, Channel error |
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| CE mark | Yes |
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| Electrical safety | EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201 |
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| Hazardous Location | C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2 |
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| Marine certification | ABS, BV, DNV, LR, CCS |
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| Temperature, Operating | 0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C |
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| Temperature, Storage | -40 to +70 °C (-40 to +158 °F) |
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| Pollution degree | Degree 2, IEC 60664-1 |
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| Corrosion protection | ISA-S71.04: G3 |
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| Relative humidity | 5 to 95 %, non-condensing |
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| Max ambient temperature | 55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F) |
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| Protection class | IP20 according to IEC 60529 |
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| EMC | EN 61000-6-4, EN 61000-6-2 |
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| Overvoltage categories | IEC/EN 60664-1, EN 50178 |
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| RoHS compliance | EU RoHS, UAE RoHS, CN RoHS |
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| WEEE compliance | DIRECTIVE/2012/19/EU |
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| Use with MTU | TU810, TU812, TU814, TU830, TU833 |
|---|
| Keying code | BB |
|---|
| Width | 45 mm |
|---|
| Depth | 102 mm, 111 mm including connector |
|---|
| Height | 119 mm |
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| Weight | 0.2 kg |
|---|
TECHNICAL INFORMATION
Features
- Four bipolar differential analog input channels configurable for voltage or current
- Analog-to-digital resolution of 14 bits plus sign with maximum 0.1% error
- Groupwise channel galvanic isolation from ModuleBus ground with 500 V AC dielectric test voltage
- Temporary 5-Watt overload protection on 250-ohm current sensing resistors up to 30 V DC
- External power distribution for field-mounted two-wire process transmitters
- Front panel status LED indicators for Fault, Run, and Warning conditions
- Harsh environment resistance rated for ISA-S71.04 G3 corrosion levels
- Mechanical keying code BB for secure mounting into compatible S800 terminal units
TECHNICAL INFORMATION
Applications
- Differential voltage and current measurement in ABB S800 I/O remote racks
- Interfacing bipolar process signals ranging between -10 to +10 V or -20 to +20 mA
- Field signal acquisition for two-wire 4-20 mA industrial process transmitters
- Marine-certified automated control platforms operating under ABS, BV, DNV, LR, and CCS standards
- Hazardous location operations requiring Class 1 Division 2 or ATEX Zone 2 ratings
TECHNICAL INFORMATION
Connections / Interfaces
- Compatible with Module Termination Units TU810, TU812, TU814, TU830, and TU833
- Transmitter power terminals allow external voltage distribution without internal current limiting
- ModuleBus interface provides +5 V logic power and converts +24 V for input stages
- Standard screw or spring-clamp connections provided by host Module Termination Unit bases
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into an approved MTU base until the mechanical locking mechanism engages.
- Verify that the MTU mechanical keys align with the BB keying code of the module.
- Derate maximum ambient operating temperature to 40 °C (104 °F) when vertically mounted in compact MTUs.
- Install the assembly in an IP54 enclosure when deployed in hazardous or polluted industrial areas.
- Maintain maximum field cable runs within the verified 600-meter limit using shielded wiring.
TECHNICAL INFORMATION
Configuration Guidelines
- Select current or voltage operation individually for each of the four differential channels.
- Ensure signal ranges match software parameter configuration: -20..+20 mA, 0(4)..20 mA, -10..+10 V, or 0(2)..10 V.
- Use external MTU current-limiting components if transmitter loop short-circuit protection is required.
TECHNICAL INFORMATION
Compatibility
- ABB S800 I/O communication interfaces and controllers operating over ModuleBus
- Module Termination Units TU810, TU812, TU814, TU830, and TU833
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- Direct replacement requires an exact model AI820 or catalog number 3BSE008544R1.
- Ensure the replacement hardware matches the BB keying code configured on the existing base.
TECHNICAL INFORMATION
Compliance and Certifications
- Electrical Safety: EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
- Hazardous Locations: Class 1 Division 2 cULus, Class 1 Zone 2 cULus, ATEX Zone 2
- Marine Standards: ABS, BV, DNV, LR, CCS
- Electromagnetic Compatibility: EN 61000-6-4, EN 61000-6-2
- Environmental Compliance: ISA-S71.04 G3, EU RoHS, CN RoHS, UAE RoHS, WEEE Directive 2012/19/EU
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSABB S800 I/O communication interfaces and controllers operating over ModuleBus Module Termination Units TU810, TU812, TU814, TU830, and TU833
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the channel capacity and input type of the ABB AI820?
The module features four bipolar differential channels. Each channel can be configured for -20..+20 mA, 0(4)..20 mA, -10..+10 V, or 0(2)..10 V.
Which Module Termination Units are compatible with the AI820?
The AI820 module connects directly to ABB S800 MTU bases TU810, TU812, TU814, TU830, and TU833 using keying code BB.
Does the AI820 limit current on its transmitter power terminals?
No. The AI820 distributes external transmitter supply voltage directly to field terminals without internal current limiting.
What is the reference market price for the ABB 3BSE008544R1?
Observed market reference pricing is approximately $429.00 USD. This figure is an indicative reference price only, not a final quotation.
