1785-LT3 Allen-Bradley Allen-Bradley

Allen-Bradley 1785-LT3 Overview The Allen-Bradley 1785-LT3 is a PLC-5/15 processor module designed for small to mid-sized industrial automation systems. It features 16K words of user memory and supports communication via DH-485 , RS-232 , and Remote I/O , making it a reliable and field-proven solution for legacy system maintenance and upgrade applications. Key Features Processor Type: PLC-5/15 User Memory: 16K words Communication Ports: DH-485, RS-232, Remote I/O Mounting: Standard 1771 I/O chassis Programming Software: RSLogix 5 or AI Series Memory Retention: Battery-backed RAM Diagnostics: Built-in LED indicators for fault and communication status Series Compatibility: Classic PLC-5 platform Technical Specifications Catalog Number: 1785-LT3 User Memory: 16K words Communication Ports: 1 x RS-232, 1 x DH-485, 1 x RIO Backplane Current Draw: ~1.0 A @ 5V DC Operating Voltage: Supplied through chassis Operating Temperature: 0°C to 60°C Storage Temperature: –40°C to 85°C Memory Backup: Lithium battery-supported Certifications: UL, CE, CSA (depending on revision) Applications Legacy system integration Small-scale machine control Data acquisition and monitoring Industrial OEM systems DH-485 based communication networks Why Choose the 1785-LT3 Compact and Reliable: Designed for stable control in smaller systems Legacy Communication Support: Ideal for DH-485 and RIO networks Cost-Effective Upgrade Path: Extend the life of existing PLC-5 systems Simple Integration: Compatible with existing 1771 chassis and modules Trusted Performance: Used in thousands of industrial installations worldwide Order Now The Allen-Bradley 1785-LT3 PLC-5/15 processor is available and ships worldwide.