Temperature Measurement Solution – ABB AI950N | AC 800M DCS Series
Where This Product Is Used
The ABB AI950N Temperature Input Module (Part No. 3KDE175523L9500) is a core I/O component deployed in ABB’s AC 800M Distributed Control System (DCS) platform. It is widely specified in the following industrial environments:
- Power Generation Plants — Turbine exhaust gas temperature monitoring, boiler feed-water temperature loops, and steam header control.
- Oil & Gas Processing — Wellhead temperature acquisition, separator vessel temperature control, and pipeline thermal profiling.
- Chemical & Petrochemical Plants — Reactor temperature feedback, distillation column tray temperature scanning, and heat exchanger control loops.
- Pulp & Paper Mills — Digester temperature regulation and dryer section thermal management.
- Water & Wastewater Treatment — Aeration basin temperature monitoring and sludge digester process control.
- Pharmaceutical Manufacturing — Validated temperature acquisition for GMP-compliant batch reactors and clean-in-place (CIP) systems.
Wherever precise, multi-point temperature data must be fed into an ABB AC 800M controller, the AI950N is the engineered solution of choice.
Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | ABB |
| Part Number | AI950N |
| Reference Number | 3KDE175523L9500 |
| Module Type | Temperature Input Module (Analog Input) |
| Compatible Platform | ABB AC 800M DCS |
| Input Types Supported | RTD (Pt100, Pt1000), Thermocouple (TC) types J, K, T, E, R, S, B |
| Number of Channels | 8 (typical for AI950N series) |
| Signal Isolation | Channel-to-channel and channel-to-bus isolation |
| Communication Bus | S800 I/O bus (ModuleBus) |
| Power Supply | Supplied via S800 I/O bus backplane |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -40 °C to +70 °C |
| Weight | 120 g |
| Mounting | S800 I/O module base unit (TB820 or equivalent) |
| Firmware | Compatible with AC 800M Control Builder M |
Note: Specifications are based on ABB S800 I/O series documentation. Always verify against the official ABB datasheet for your specific revision.
Why Engineers Specify This Model
- Native AC 800M Integration — Plug-and-play compatibility with ABB’s AC 800M controller via the S800 ModuleBus eliminates custom signal conditioning and reduces commissioning time.
- Multi-Sensor Flexibility — Accepts both RTD and thermocouple inputs on the same module, reducing the number of module types required in a panel and simplifying spare-parts inventory.
- High Measurement Accuracy — Designed for industrial-grade precision, critical in processes where ±1 °C deviation can affect product quality or safety interlocks.
- Robust Isolation Architecture — Channel-to-channel isolation prevents ground loops and cross-talk in multi-sensor installations — a common failure mode in legacy systems.
- Long Product Lifecycle Support — ABB’s AC 800M platform has an extended support horizon, making AI950N a safe long-term investment for brownfield and greenfield projects alike.
- Compact Form Factor — Lightweight (120 g) and DIN-rail compatible via standard S800 base units, optimizing cabinet space in dense I/O marshalling panels.
Complete System Bill of Materials
To deploy the AI950N in a functional AC 800M temperature acquisition loop, the following components are typically required:
- ABB AI950N (3KDE175523L9500) — Temperature Input Module (this item)
- ABB TB820 / TB820V2 — ModuleBus Modem (S800 I/O bus interface)
- ABB S800 I/O Module Base Unit (e.g., TU810V1 or TU830V1)
- ABB PM864A / PM866 / PM891 — AC 800M Process Controller CPU
- ABB CI854A / CI858 — PROFIBUS / ModuleBus Communication Interface (if remote I/O)
- RTD sensors (Pt100 / Pt1000) or Thermocouple assemblies (field-supplied)
- 24 VDC Power Supply Unit for S800 I/O rail
- ABB Control Builder M (software) — for configuration and function block programming
Contact [email protected] for bundled BOM sourcing and compatibility verification.
Compliance & Industry Standards
- CE Marking — Compliant with EU Low Voltage and EMC Directives
- IEC 61131-2 — Programmable controllers: Equipment requirements and tests
- IEC 61000-4 Series — EMC immunity standards for industrial environments
- RoHS Compliant — Restriction of Hazardous Substances (EU Directive 2011/65/EU)
- ATEX / IECEx — Consult ABB for zone-rated barrier/isolator requirements when used in hazardous area applications
- ISO 9001 — Manufactured under ABB’s certified quality management system
Quality Assurance & Sourcing
At Konmask.com, every ABB module we supply undergoes a structured verification process before dispatch:
- Authenticity Check — Visual inspection of ABB holographic labels, part number silk-screening, and PCB revision markings against ABB’s published hardware revisions.
- Functional Pre-Test — Where test fixtures are available, modules are powered and bus-communication verified prior to shipment.
- Condition Grading — Each unit is graded as New (factory-sealed), Refurbished (tested & recertified), or Surplus (tested, cosmetic wear). Grade is disclosed on every order.
- Secure Packaging — Anti-static ESD bags, foam-lined boxes, and moisture-barrier sealing for international freight.
- Traceability — Serial number and batch records retained for 3 years post-shipment.
How to Source This Part
- Add to Cart — Click the purchase button on this page for immediate checkout.
- Request a Quote — Email [email protected] with your required quantity, delivery timeline, and destination country for a tailored commercial offer.
- Urgent / Emergency Orders — Call or WhatsApp +0086 19859288691 for same-day response on critical plant shutdowns.
- OEM / Volume Procurement — We support blanket purchase orders and consignment stock arrangements for MRO and EPC contractors.
- Export Documentation — We provide commercial invoices, packing lists, COO certificates, and ECCN classification support for international shipments.
Application-Specific FAQ
Q: Is the AI950N compatible with AC 800M firmware version 6.x and above?
A: Yes. The AI950N is supported across all major AC 800M firmware releases. Always verify the specific hardware revision (R0001, R0002, etc.) against ABB’s compatibility matrix in the AC 800M Hardware Configuration manual.
Q: Can I mix RTD and thermocouple sensors on the same AI950N module?
A: This depends on the channel configuration supported by your specific AI950N revision. Some revisions support mixed input types per channel group; others require uniform sensor types per module. Confirm with ABB’s datasheet for your hardware revision.
Q: What is the maximum cable length for RTD sensors connected to the AI950N?
A: ABB recommends shielded twisted-pair cable. Maximum cable length depends on cable resistance and sensor type — typically up to 100–200 m for Pt100 in 3-wire configuration. Consult ABB’s S800 I/O installation guide for exact limits.
Q: Do you supply the module base unit (TU810 / TU830) as well?
A: Yes. Konmask.com stocks a range of S800 I/O base units and accessories. Contact us to source a complete matched set.
Q: What is the lead time for the AI950N?
A: In-stock units ship within 1–3 business days. For out-of-stock situations, typical lead time is 2–6 weeks depending on global availability. Contact us for real-time stock status.
Q: Can this module be used in a Safety Instrumented System (SIS)?
A: The standard AI950N is not SIL-rated. For safety-critical temperature loops, ABB offers dedicated SIL-certified I/O modules. Contact our engineering team for SIS-compliant alternatives.
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