Allen-Bradley 1738-AENT ArmorPoint EtherNet/IP Adapter

Allen-Bradley 1738-AENT ArmorPoint EtherNet/IP Adapter Configured for distributed I/O communication in EtherNet/IP networks, the Allen-Bradley 1738-AENT (1738-AENT ArmorPoint Adapter) provides direct physical and electrical execution for connecting ArmorPoint I/O modules to a control network, handling backplane current delivery and field data exchange. Suffix Breakdown & Model Matrix The documentation specifies a single catalog number 1738-AENT. No additional suffixes or variant matrix are defined for this adapter. Hardware Specifications Parameter Specification Model 1738-AENT Brand Allen-Bradley Product Type ArmorPoint EtherNet/IP Network Adapter Product Family ArmorPoint Modules Weight 0.68 lb Operating Temp -20 to 60 deg C (-4 to 140 deg F) Storage Temp -40 to 85 deg C (-40 to 185 deg F) Power Consumption 8.1 W @ 28.8 VDC max Maximum Backplane Current 1.0 A Inrush Current 6 A for 10 ms Power Dissipation 2.8 W max Thermal Dissipation 9.5 BTU/hr @ 28.8 VDC Input Voltage Protection Reverse polarity protected Isolation Voltage 50 V continuous Relative Humidity 5-95% non-condensing Shock (Operating) 30g Shock (Non-Operating) 50g Emissions Group 1, Class A Enclosure Rating IP65/IP66/IP67 when marked Field Connection M12, sealed Backplane Bus Communication and I/O Density Scaling The 1738-AENT adapter supports deterministic EtherNet/IP network communication with ArmorPoint I/O modules. Maximum backplane output current is 1.0 Amp, ensuring consistent power delivery across connected modules. I/O density scaling allows multiple distributed modules to share a single adapter while maintaining network timing and signal integrity across the backplane. Frequently Asked Questions Q: What is the maximum backplane current output for the 1738-AENT? A: The adapter provides a maximum of 1.0 Amp for all connected ArmorPoint modules. Q: Does the 1738-AENT provide continuous electrical isolation? A: Yes. The adapter features 50 V continuous isolation between network and field circuits. Q: Can the adapter be installed in washdown or outdoor conditions? A: Yes, the device meets IP65/IP66/IP67 enclosure ratings when marked and installed using proper sealed M12 connections. Field Installation Guidelines Mount the adapter in accordance with ArmorPoint module mechanical standards. Maintain all enclosure seals. Use proper M12 field connectors to preserve IP-rated protection. Verify supply voltage within specified range before applying power. Route network cables separately from high-current devices to minimize electrical noise. Ensure the adapter chassis is grounded to the system protective earth. Inspect seals and cable glands regularly in harsh environments. Maintain module counts and network topology within EtherNet/IP specifications.