1747-L552 AB
Allen Bradley 1747-L552 is a processor belonging to Allen Bradley’s SLC 500 series controllers. The 1747-L552 provides users with a high bandwidth network for the system, bringing 10 Mbps Ethernet connectivity to popular SLC 500 series programmable controllers. 1747-L552 has received praise in the C series or later for its 64k user memory backup. In addition, it has a maximum user memory of a total of 32K words (28K words for information or programming, 4K words for information only). This processor has 4096 inputs and 4096 outputs. The 1747-L552 has standard RAM and flash backup memory. The 1747-L552 supports 100 Mbps Ethernet communication speed through automatic negotiation, increases Ethernet connections (1747-L552 has 48 connections), and provides HTTP server functionality.
The 1747-L552 features a built-in 10Base-T Ethernet channel, enabling 10 Mbps communication through TCP/IP protocol support, and utilizing many widely used Ethernet devices and cabling. Through the SLC 500 message instruction, 1747-L552 achieves high-speed point-to-point communication.
Other features of 1747-L552 include 3 maximum chassis and 30 slots, LED operation indicators, and a typical 0.9 ms/K scan time. The processor has a 5V DC power load of 1A and a 24V DC power load of 200 mA. In the event of a power outage, the program scan hold time range for 1747-L552 is 20 milliseconds to 3 seconds, depending on the power load. This processor is specially designed for industrial environments and has excellent noise resistance. It complies with NEMA standard ICS 2-230 and has an ambient operating temperature range of 0-60 ˚ C（32-140 ˚ F) , storage temperature range is -40-85 ˚ C （-40-185 ˚ F）。
The Allen Bradley 1747-L552 processor is a processor module with 32K words of user memory. This processor comes with integrated RS-232 and Ethernet interfaces.
