ABB AI830A (3BSE040662R1) – 8-Channel RTD/Thermocouple Analog Input Module | AC800M / S800 I/O Platform
Engineering Background
The ABB S800 I/O system is the field-proven distributed I/O platform designed for ABB’s AC800M Process Controller family, widely deployed across oil & gas, power generation, pulp & paper, and chemical processing industries. The AI830A is the dedicated temperature-measurement module within this ecosystem, purpose-built to handle the precision demands of RTD and thermocouple signal conditioning at the field level.
Product Positioning
The AI830A (catalog number 3BSE040662R1) is a high-accuracy, 8-channel analog input module optimized for temperature sensors. It eliminates the need for external signal conditioners, integrates directly onto the S800 ModuleBus, and delivers linearized engineering-unit values directly to the AC800M controller — reducing wiring complexity and improving measurement integrity in demanding process environments.
Complete Technical Specifications
- Part Number: AI830A / 3BSE040662R1
- Manufacturer: ABB (Asea Brown Boveri)
- Module Type: Analog Input – Temperature (RTD & Thermocouple)
- Number of Channels: 8 (individually configurable)
- Supported Sensor Types: PT100, PT200, PT500, PT1000 (RTD); Type B, E, J, K, N, R, S, T (TC)
- Measurement Range: −200 °C to +850 °C (sensor-dependent)
- Resolution: 16-bit ADC
- Accuracy: ±0.1% of full scale (RTD); ±0.2% of full scale (TC)
- Cold Junction Compensation: Automatic (internal reference)
- Bus Interface: S800 ModuleBus (optical)
- Power Supply: Supplied via ModuleBus backplane (no external 24 VDC required)
- Power Consumption: ≤ 2.5 W
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −40 °C to +70 °C
- Relative Humidity: 5% to 95% (non-condensing)
- Protection Class: IP20
- Dimensions (W × H × D): 40 × 130 × 100 mm (approx.)
- Weight: 240 g
- Certifications: CE, UL, ATEX (zone 2 when used with appropriate barriers)
- Firmware Compatibility: AC800M Controller OS ≥ 5.0
- Configuration Tool: ABB Control Builder M (CBM)
Proven Application Environments
- Oil & Gas: Wellhead temperature monitoring, separator vessel control, pipeline SCADA integration
- Power Generation: Turbine exhaust temperature arrays, boiler drum level/temperature loops
- Pulp & Paper: Digester temperature profiling, dryer section control
- Chemical & Petrochemical: Reactor temperature mapping, distillation column control
- Water & Wastewater: Process temperature monitoring in treatment plants
- Pharmaceutical: CIP/SIP temperature validation loops (FDA-regulated environments)
Engineering Advantages
- Integrated Linearization: On-module hardware linearization for all supported RTD and TC types — no PLC function block overhead required
- Per-Channel Configurability: Each of the 8 channels can be independently assigned a sensor type, range, and engineering unit via CBM software
- Optical ModuleBus Isolation: Galvanic isolation between field wiring and controller backplane eliminates ground-loop interference
- Hot-Swap Capable: Module can be replaced under power without shutting down the controller or adjacent I/O (with appropriate S800 baseplate)
- Diagnostics: Per-channel open-circuit, short-circuit, and out-of-range fault detection with status bits propagated to AC800M
- Compact Form Factor: Single-slot S800 module — maximizes cabinet density in retrofit and greenfield projects
System Architecture & Signal Flow
The AI830A mounts on an S800 I/O baseplate (e.g., TB820V2 ModuleBus Modem or TB840A Redundant ModuleBus Modem). Field sensor wiring connects to the baseplate terminal block. The module samples all 8 channels sequentially, applies cold-junction compensation (for TC inputs) or 3-wire/4-wire compensation (for RTD inputs), linearizes the result, and transmits 16-bit process values over the optical ModuleBus to the AC800M CPU. The controller reads values via standard IEC 61131-3 function blocks in Control Builder M. Cycle time is configurable from 100 ms to 1 s per channel group.
Sourcing & Quality Verification
- Origin: Genuine ABB production units — not aftermarket or remanufactured
- Condition: New surplus or refurbished-to-spec (clearly stated per listing)
- Traceability: Each unit ships with original ABB part label (3BSE040662R1) and date code visible
- Pre-shipment Testing: Power-on functional verification performed; ModuleBus communication confirmed
- Packaging: ESD-safe anti-static bag + foam-lined carton; humidity indicator card included
- Warranty: 12-month Konmask warranty covering manufacturing defects and functional failure
Procurement Process
- Confirm Compatibility: Verify your AC800M firmware version (≥ 5.0) and baseplate model (TB820V2 / TB840A / TB845)
- Place Order: Add to cart and complete checkout — HKD pricing, multiple payment methods accepted
- Order Confirmation: Automated confirmation email with tracking number issued within 1 business day
- Shipping: DHL Express / FedEx International Priority — typical transit 3–7 business days worldwide
- Customs & Documentation: Commercial invoice, packing list, and HS code 8537.10 provided for customs clearance
- Technical Support: Pre- and post-sale engineering support available via support@konmask.com
Technical FAQ
Q: Can AI830A be used with 2-wire RTDs?
A: Yes, but 2-wire connection introduces lead resistance error. ABB recommends 3-wire or 4-wire RTD connections for accuracy ≤ ±0.1%. 2-wire is acceptable for non-critical monitoring loops.
Q: Is the AI830A compatible with the AC800M High Integrity (HI) controller?
A: The standard AI830A is not SIL-certified. For safety-instrumented systems, use the ABB AI830A with TÜV-certified SIL 2 assessment documentation or consult ABB for the appropriate SIL-rated variant.
Q: What baseplate is required?
A: The AI830A requires an S800 I/O baseplate with ModuleBus interface — TB820V2 (single), TB840A (redundant), or TB845 (extended). It is not compatible with S900 or S100 baseplates.
Q: Can channels be mixed between RTD and TC types?
A: Yes. Each channel is independently configured in Control Builder M. You can assign CH1–CH4 as PT100 and CH5–CH8 as Type K thermocouple within the same module instance.
Q: What is the update rate?
A: Default scan cycle is 500 ms for all 8 channels. Minimum configurable cycle is 100 ms (single channel active). Maximum is 1000 ms.
Q: Do you provide an ABB factory test certificate?
A: Factory certificates are available for new-in-box units where original ABB documentation is intact. Please contact support@konmask.com before ordering if this is a requirement.
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