The Allen-Bradley 1756-L73S is a GuardLogix 5570 Programmable Automation Controller (PAC) designed by Rockwell Automation.
It provides both standard and integrated safety control functions in a single platform, making it ideal for applications requiring high functional safety.
The controller offers 8 MB of user memory, 4 MB of safety memory, and 0.98 MB of I/O memory. It also includes a 1 GB non-volatile memory card (1784-SD1) for data storage.
The 1756-L73S supports up to 128,000 digital and 4,000 analog I/O points and communicates via a built-in USB port.
Certified to Safety Integrity Level (SIL) 3 and Performance Level (PLe), it is engineered for high-performance process and machine safety applications within the ControlLogix 5570 family.