Product Overview
When process temperature accuracy is non-negotiable, the ABB AI950N delivers dependable measurement in demanding industrial environments. This Temperature Input (TI4) module is part of the ABB S900 I/O system, designed for installation in safe (non-hazardous) areas. It supports a wide range of sensors—Pt100, Pt1000, Ni100, and thermocouples—making it a versatile choice for your control system.
Key Features & Benefits
The ABB AI950N is engineered for reliability and ease of maintenance. Its robust design includes hot swap capability, allowing module replacement without interrupting the primary voltage. Extended diagnostics and auto-diagnostics simplify troubleshooting, while G3 coating protects against corrosive atmospheres.
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4 isolated input channels for channel-to-channel electrical isolation
- Supports Pt100, Pt1000, Ni100, and 0...3 kOhms in 2/3/4-wire technique
- Thermocouple types B, E, J, K, L, N, R, S, T, U, and mV
- Internal or external cold junction compensation
- Short and break detection for reliable operation
- Hot Configuration in Run and Hot Swap functionality
- Redundancy on power and communication buses
- Excellent configuration and diagnostics via FDT/DTM
Technical Specifications
Built to meet rigorous standards, the ABB AI950N operates within a wide temperature range and meets environmental directives.
| Parameter |
Value |
| Article number |
3KDE175523L9500 |
| Type |
Analog Input |
| Number of channels |
4 |
| HART |
Yes |
| SOE |
N/A |
| Redundancy |
No |
| Intrinsic safety |
No |
| Mechanics |
S900 |
| CE mark |
Yes |
| Corrosive atmosphere |
ISA-S71.04 G3 |
| Climatic operating conditions |
Relative humidity max. 93 % +/- 3 % at 40 °C |
| Max ambient temperature |
-20 °C...60 °C |
| RoHS compliance |
DIRECTIVE/2011/65/EU (EN 50581:2012) |
| WEEE compliance |
DIRECTIVE/2012/19/EU |
| WEEE category |
Small Equipment (No External Dimension More Than 50 cm) |
| Width |
20 mm (0.79 in.) |
| Depth |
104 mm (4.09 in.) |
| Height |
104 mm (4.09 in.) |
| Weight |
0.13 kg (0.29 lbs.) |
Industry Applications
The ABB AI950N excels in process industries where temperature monitoring is critical. In chemical plants, it provides accurate readings for reaction vessels, ensuring product quality. In power generation, it monitors bearing temperatures on turbines, preventing costly failures. Its channel-to-channel isolation and support for multiple sensor types make it a flexible choice for retrofitting existing systems.
Installation & Setup
Installing the ABB AI950N is straightforward. Mount it on a DIN rail in a safe area enclosure. Connect the sensor wires to the appropriate terminals, observing the correct polarity for thermocouples. For RTDs, use 2-, 3-, or 4-wire connections as required. Configure the module using FDT/DTM tools; the hot configuration feature allows changes without stopping the process. Always verify that the ambient temperature remains within -20 °C to 60 °C to ensure optimal performance.
Maintenance & Reliability
Routine maintenance is minimal due to the module's auto-diagnostics. Check the G3-coated components periodically for signs of corrosion, especially in harsh environments. The hot swap feature enables replacement without shutting down the system, reducing downtime and maintenance costs. With a robust design and extended diagnostic capabilities, the ABB AI950N offers long-term reliability.
Compatibility & Integration
The ABB AI950N is part of the S900 I/O system, which communicates via PROFIBUS DP. This allows seamless integration with ABB control systems and other PROFIBUS-compatible PLCs. The module supports HART, enabling smart field device integration. Its compact form factor and flexible mounting options make it easy to incorporate into existing cabinets.
Selection Guide & Purchasing Advice
Before purchasing, confirm that your control system supports PROFIBUS DP and that the module's specifications match your sensor requirements. Verify the ambient temperature and humidity conditions in your facility. For a reliable source, choose PLC Source PRO—a trusted supplier of industrial automation parts. We offer the ABB AI950N with fast worldwide shipping and competitive pricing.