Product Details
Product Overview
The Allen Bradley 1794-IF4IXT serves as a high-density, isolated analog input solution within the FLEX I/O XT family. This module interfaces directly with sensors in harsh industrial environments, converting 4-20mA or ±10V signals into precise 16-bit digital data. As a 100% Brand New original component, the "XT" designation signifies extended temperature and environmental hardening, ensuring stable performance where standard I/O modules fail.
Technical Specifications
The 1794-IF4IXT utilizes Sigma-Delta conversion technology to maintain high signal integrity across all channels.
| Feature | Specification |
| Number of Inputs | 4 Isolated Channels |
| Resolution | 16 Bits |
| Conversion Type | Sigma Delta |
| Input Current Range | 4–20 mA |
| Input Voltage Range | ±10V |
| Isolation Voltage | 120V Continuous |
| External DC Power | 24V DC Nominal |
| FlexBus Current | 50mA |
| Power Dissipation | 2.0W @ 31.2V DC Max |
| Thermal Dissipation | 6.8 BTU/hr @ 31.2V DC Max |
| Weight | 0.31 lbs (0.14 kg) |
Engineering Advantages
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Eliminate Ground Loops: The 120V continuous isolation between channels prevents ground loop interference and protects the backplane from field-side electrical surges. This architecture ensures that a fault on one sensor does not compromise the entire I/O rack.
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Extreme Temperature Resilience: The XT (Extended Temperature) rating allows the module to operate in outdoor cabinets and non-climate-controlled environments. It withstands thermal cycling and maintains 16-bit accuracy across its full operating range.
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Precision Signal Processing: The Sigma-Delta converter filters out high-frequency industrial noise, providing clean, stable data for PID loops and sensitive flow-rate monitoring.
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Space-Efficient Modular Design: The compact FLEX I/O footprint reduces cabinet space requirements. The module snaps directly onto a terminal base (1794-TB3 or 1794-TB3S), allowing technicians to wire the system before installing the electronics.
FAQs
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What is the difference between the 1794-IF4I and the 1794-IF4IXT?
The "XT" version features conformal coating and components rated for extended temperature ranges. While they share the same logical profile, the 1794-IF4IXT provides superior protection against humidity, salt spray, and extreme heat.
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Does this module require a specific terminal base?
Yes. Use the 1794-TBN, 1794-TB3, or 1794-TB3S terminal bases. We recommend the 1794-TB3S for applications requiring spring-clamp terminations in high-vibration areas.
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Can I mix voltage and current signals on the same module?
Yes. You can configure each of the four isolated channels independently to accept either a 4-20mA current signal or a ±10V voltage signal through software configuration in RSLogix 5000/Studio 5000.
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Is this a Brand New unit?
Yes. We supply only 100% Brand New original Allen Bradley factory-sealed hardware. Each unit includes the original manufacturer's UPC (612598592579).
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.