ABB AI950S 3KDE175521L9500 S900 I/O Temperature Input TI4-Ex Module

SKU ABB AI950S 3KDE175521L9500

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12-month warranty
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Manufacturer: ABB
Product No.: ABB AI950S 3KDE175521L9500
Country of origin:Germany
Product Type: Temperature Input Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 120g
Dimensions: 10.5 x 2.0 x 11.0 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The ABB AI950S 3KDE175521L9500 (3KDE175521L9500) is a 4-channel temperature input module (TI4-Ex) engineered for the ABB S900 remote I/O system. Designed for deployment in hazardous industrial locations, this module acquires precise temperature measurements from resistance thermometers (RTD), thermocouples, resistance transmitters, and millivolt sources in Zone 1 and Zone 2 hazardous areas.

As an intrinsic safety (Ex i) interface, the AI950S mounts onto S900 I/O backplanes or power-distribution modules, converting field-level thermal signals into digitized process data for transmission via PROFIBUS DP or Modbus protocols to the control system. The unit incorporates galvanic isolation between field circuits, internal bus, and power supply, ensuring signal integrity and protection against common-mode transient voltages.

Features

Four independent, configurable channels for RTD, thermocouple, resistance, and voltage inputs
Intrinsically safe Ex i field circuits for direct connection of field sensors located in Zone 1 and Zone 2
Supports sensor types including Pt100, Pt200, Pt500, Pt1000, Ni100, and standard thermocouples (Types B, E, J, K, N, R, S, T)
Internal cold junction compensation (CJC) for high-accuracy thermocouple measurements
Hot-swappable module design allowing replacement under power without system shutdown
Comprehensive diagnostic monitoring including wire-break detection, short-circuit detection, and out-of-range alarms

Applications

Hazardous area temperature monitoring in chemical and petrochemical processing plants
Reactor core and distillation column thermal profiling in oil and gas refineries
High-precision temperature acquisition for distributed control systems (DCS) via S900 remote I/O racks
Critical temperature interlock and safety shutdown monitoring loops

Technical Specifications

Parameter	Specification
Manufacturer	ABB
Product Series	ABB S900 I/O
Catalog Number / Model	AI950S / 3KDE175521L9500
Module Type	Temperature Input Module (TI4-Ex)
Number of Channels	4 channels
Supported Sensor Types	RTD (Pt100, Ni100), Thermocouples (B, E, J, K, N, R, S, T), Resistance (0 to 400 Ohm, 0 to 2000 Ohm), Voltage (-80 mV to +80 mV)
Explosion Protection	II 2(1) G Ex ib [ia Ga] IIC T4 / II 2(1) D ex ib [ia Da] IIIC
Galvanic Isolation	Between channels and system / power supply
Mounting	S900 I/O backplane / terminal block
Country of Origin	Germany

Connections / Interfaces

The AI950S module connects to field sensors via S900 Series terminal blocks (either screw-type or spring-clamp) designed for hazardous area separation. Internal module connections interface directly with the S900 passive or active backplane for power distribution and internal communication bus routing.

FAQ

What control systems are compatible with the ABB AI950S 3KDE175521L9500?

The AI950S module is designed for the ABB S900 remote I/O system, which integrates with distributed control systems (DCS) such as ABB System 800xA via PROFIBUS DP or Modbus communication gateways.

What sensor types can be connected to the TI4-Ex input channels?

The 4-channel TI4-Ex module supports resistance thermometers (RTDs like Pt100 and Ni100), thermocouples (Types B, E, J, K, N, R, S, T), millivolt sources (-80 mV to +80 mV), and resistance transmitters.

Is the ABB AI950S suitable for installation in hazardous areas?

Yes, the module features intrinsic safety (Ex i) approval, allowing direct connection of field sensors located in Zone 1 and Zone 2 hazardous environments.

Can the AI950S module be hot-swapped during operation?

Yes, the S900 I/O architecture supports hot-swapping, allowing the AI950S module to be replaced while the system is powered on without interrupting the entire remote I/O rack.

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30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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