Product Summary
The 1794-AENTR is a vital Flex I/O communication adapter from Allen-Bradley. This module connects your I/O rack to a central controller. It supports network redundancy via Device Level Ring topology. Engineers achieve high-availability Ethernet communication with this single part.
Expert Technical Evaluation & Performance Review
This adapter delivers a robust communication rate of 10 to 100 Mbps. The dual RJ45 ports enable both Linear and Ring topologies. Engineers use Ring topology for high-availability networks. The 1794-AENTR handles up to 8 Flex I/O modules effortlessly. This capacity makes it ideal for medium-sized distributed systems.
The module requires a nominal input voltage of 24 Volts DC. Its acceptable range spans from 19.2 to 31.2 Volts DC. This wide tolerance includes the 5% AC ripple factor. The adapter consumes just 500 mA during operation. At 24V DC, its power consumption drops to 400 mA. This efficiency reduces overall thermal stress on the panel.
Environmental durability is a core design consideration here. The unit operates reliably from 0 to 55 °C. It can survive storage temperatures from -40 to 85 °C. Vibration testing confirms a 5 g tolerance at 10-500Hz. The module also withstands a 30 g operating shock peak. These specs confirm its suitability for harsh industrial settings.
Product Procurement & Buyer Guide
Procurement managers should verify the power supply requirements first. The module needs an external 24VDC power source. Use stranded copper wire sized between 22 and 12 AWG. Ensure the wire insulation rating is 75 °C or higher. The maximum insulation thickness allowed is 1.2 mm.
Application engineers benefit from the bi-color LED indicators. The Mod and Network LEDs show green for normal status. They turn red when the module detects a problem. Link 1 and Link 2 LEDs flash yellow for 10 Mbps. These same indicators flash green for a 100 Mbps connection. This feature simplifies troubleshooting and network monitoring.
The total weight of this adapter is only 0.56 lbs (0.26 kg). Its compact form factor mounts directly onto a DIN rail. The open-style enclosure requires no additional enclosure rating. Always inspect the mounting point for excessive vibration. The module accepts 18 Amps of inrush current for 2 ms. This tolerance protects against power-on surges effectively.
Logistics & Standard Packaging Details
