Allen-Bradley 1756-L73S GuardLogix PLC Controller

The Allen-Bradley 1756-L73S GuardLogix PLC Controller (Logix5573S) is a safety‑integrated PAC that combines standard ControlLogix processing with integrated safety, delivering 8 MB of user memory and 4 MB of safety memory for SIL 3 tasks. It supports up to 128,000 I/O points, including 128,000 digital I/O and up to 4,000 analog I/O, with 0.98 MB of I/O memory and a maximum power dissipation of 2.5 W; it draws about 800 mA from a 5.1 V rail and 5 mA from a 1.2 V rail, and provides 30 V isolation. The module includes a built‑in USB port and supports an Energy Storage Module (ESM) for non‑volatile memory retention, and, to meet safety requirements, is typically used with a safety partner module such as the 1756‑L7SP to achieve SIL 3/PLe/Cat compliance. This GuardLogix processor is designed for safety‑critical applications across manufacturing and process industries, including packaging lines and material‑handling systems, where integrated safety and high‑throughput control are essential.