HomeABBS800 I/OAnalog Input ModuleABB AI843 3BSE028925R1 S800 I/O Analog Input Module
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ABB AI843 3BSE028925R1 S800 I/O Analog Input Module

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The ABB AI843 3BSE028925R1 is an S800 I/O Analog Input Module. It provides eight differential input channels for thermocouple and linear millivolt measurements. Configurable ranges include minus 30 mV to plus 75 mV or thermocouple types B through U. A dedicated Pt100 channel provides cold junction compensation for channels one through eight.

ManufacturerABB
Part Number3BSE028925R1
ModelAI843
Product TypeAnalog Input Module
ConditionNew
Warranty12 Months
AvailabilityRequest current stock
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PRODUCT INFORMATION

Product Overview

The ABB AI843 3BSE028925R1 is an S800 I/O Analog Input Module. It provides eight differential input channels for thermocouple and linear millivolt measurements. Configurable ranges include minus 30 mV to plus 75 mV or thermocouple types B through U. A dedicated Pt100 channel provides cold junction compensation for channels one through eight.

The module provides groupwise electrical isolation from ground and supports redundant configurations. Diagnostic front light-emitting diodes indicate Fault, Run, and Warning statuses. The unit delivers 16-bit analog-to-digital conversion resolution for process signals. It installs directly onto compatible S800 Module Termination Units using keying code BA.

TECHNICAL DATA

Technical Specifications

ParameterSpecification
Input TypeTemperature Range
TC type B (1)44...1820°C, 111.2...3308°F
TC type C0...2300°C, 32...4172°F
TC type D0...2300°C, 32...4172°F
TC type E (1)-270...1000°C, -454...1832°F
TC type J (1)-210...1200°C, -346...2192°F
TC type K (1)-270...1372°C, -454...2501.6°F
TC type L-200...900°C, -328...1652°F
TC type N (1)-270...1300°C, -454...2372°F
TC type R (1)-50...1768°C, -58...3214.4°F
TC type S (1)-50...1768°C, -58...3214.4°F
TC type T (1)-270...400°C, -454...752°F
TC type U-200...600°C, -328...1112°F
Linear range-30...75 mV
Pt100 RTD (for CJC) (2)-40...100°C, -40...212°F
Signal specification-30..75 mVlinear, TC types B, C, E, J, K, L, N, R, S, T and U
Number of channels8
Signal typeSee table
HARTNo
SOENo
RedundancyYes
High integrityNo
Intrinsic safetyNo
MechanicsS800
Resolution16 bits
Input impedance> 1 MΩ
IsolationGroupwise isolated from ground
ErrorMax. 0.1%
Temperature driftTyp. 10 ppm/°C, Max. 25 ppm/°C
Input filter (rise time 0-90%)1.1 kHz
Update cycle time320 + 80 * (no of active channels) ms at 50 Hz 267 + 67 * (no of active channels) at 60 Hz
Maximum field cable length600 meters (656 yards) or max. 500 Ω
CMRR, 50Hz, 60Hz100 dB
NMRR, 50Hz, 60Hz> 40 dB
Rated insulation voltage50 V
Dielectric test voltage500 V a.c.
Power dissipation1.5 W
Current consumption +5 V Modulebus60 mA
Current consumption +24 V Modulebus50 mA
Current consumption +24 V external0
Front LED’sF(ault), R(un), W(arning)
SupervisionModule error: reference channels outside limits, power supply low Channel error: open-circuit, CJ channel error (ch 8): out of range <-40°C (-40°F) and >100°C (212°F) Junction channel) Channel error Linear: none
Status indication of supervisionModule Error, Module Warning, Channel error
CE markYes
Electrical safetyEN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
Hazardous LocationC1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2
Marine certification-
Temperature, Operating0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C
Temperature, Storage-40 to +70 °C (-40 to +158 °F)
Pollution degreeDegree 2, IEC 60664-1
Corrosion protectionISA-S71.04: G3
Relative humidity5 to 95 %, non-condensing
Max ambient temperature55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F)
Protection classIP20 according to IEC 60529
EMCEN 61000-6-4 and EN 61000-6-2
Overvoltage categoriesIEC/EN 60664-1, EN 50178
RoHS complianceEU RoHS, UAE RoHS, CN RoHS
WEEE complianceDIRECTIVE/2012/19/EU
Use with MTUTU818, TU830, TU833, TU842, TU843
Keying codeBA
Width45 mm
Depth102 mm, 111 mm including connector
Height119 mm
Weight0.157 kg
TECHNICAL INFORMATION

Features

  • Eight differential input channels for thermocouple and linear millivolt measurements.
  • Configurable input types include thermocouple types B, C, D, E, J, K, L, N, R, S, T, and U.
  • Linear input range covers -30 mV to +75 mV with 16-bit resolution.
  • Dedicated Pt100 RTD channel provides cold junction compensation from -40 to +100 °C.
  • Groupwise electrical isolation from ground rated at 50 V insulation voltage.
  • Front panel light-emitting diodes indicate Fault, Run, and Warning states.
  • Module supervision reports open-circuit conditions and cold junction out-of-range errors.
  • Supports redundant operation in S800 I/O system architectures.
TECHNICAL INFORMATION

Applications

  • Thermocouple-based temperature measurement across eight differential input channels.
  • Low-voltage millivolt signal acquisition within the range of -30 mV to +75 mV.
  • Direct cold junction compensated temperature monitoring via local or remote Pt100 sensors.
TECHNICAL INFORMATION

Connections / Interfaces

  • Modulebus interface connection for internal communication and power distribution.
  • Field signals wire to host Module Termination Units TU818, TU830, TU833, TU842, or TU843.
TECHNICAL INFORMATION

Installation Guidelines

  1. Mount the module onto approved Module Termination Units using keying code BA.
  2. Operate up to 55 °C in standard horizontal mounting arrangements.
  3. Derate maximum operating ambient temperature to 40 °C for vertical mounting in compact MTUs.
  4. Keep field cable lengths within 600 meters or maximum loop resistance of 500 ohms.
TECHNICAL INFORMATION

Configuration Guidelines

  1. Configure input range and sensor type independently for each channel.
  2. Select linear millivolt mode or specific thermocouple linearization curves per IEC 584-1.
  3. Set cold junction compensation locally, on a distant connection unit, or by parameter.
  4. Update cycle time varies based on mains frequency and the number of active channels.
TECHNICAL INFORMATION

Compatibility

  • ABB Module Termination Units TU818, TU830, TU833, TU842, and TU843.
TECHNICAL INFORMATION

Compliance and Certifications

  • CE Mark
  • Electrical safety: EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
  • Hazardous locations: Class I Div 2 cULus, Class I Zone 2 cULus, ATEX Zone 2
  • EMC: EN 61000-6-4 and EN 61000-6-2
  • Corrosion protection: ISA-S71.04 Class G3
  • Environmental compliance: EU RoHS, CN RoHS, UAE RoHS, WEEE Directive 2012/19/EU
COMPATIBILITY

Compatibility & Replacement

COMPATIBLE MODELSABB Module Termination Units TU818, TU830, TU833, TU842, and TU843.

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.

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02Confirm RevisionCheck suffix, hardware or firmware when applicable.
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ORDERING PROCESS

From RFQ to Dispatch

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PRODUCT FAQ

Frequently Asked Questions

What sensor types are supported by the ABB AI843 module?
The AI843 supports thermocouple types B, C, D, E, J, K, L, N, R, S, T, and U. It also measures linear signals from minus 30 mV to plus 75 mV.
How does the AI843 handle cold junction compensation?
A dedicated Pt100 channel measures cold junction temperatures between -40 °C and +100 °C. Compensation can be measured locally on MTU terminals, on distant units, or set by parameter.
Which Module Termination Units are compatible with the AI843?
The module mounts on Module Termination Units TU818, TU830, TU833, TU842, and TU843. It requires mechanical keying code BA for proper alignment.
Does the ABB AI843 module support redundant configurations?
Yes, the AI843 analog input module supports hardware redundancy.
Condition Confirmed Before OrderQuoted condition is confirmed before payment and dispatch.
Warranty & Returns12 Months standard warranty and 30-day return request period.International DeliveryShipping method is selected according to destination and shipment size.
Technical Source PolicySpecifications are published only when supported by product or manufacturer references.
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