Schneider Electric 140CPU67160 AK Hot Standby Controller

Schneider Electric 140CPU67160 Unity Hot Standby processor with multimode Ethernet is a redundant CPU module for Modicon Quantum Unity controllers, designed to keep process control running in the event of a primary CPU fault. It runs at 266 MHz and provides 1024 kB of RAM, with built‑in multimode Ethernet to support networked communications. This Unity Hot Standby processor is part of Schneider Electric's Quantum automation platform and is typically deployed in high‑availability control architectures to enable rapid failover without interrupting operations. The model was discontinued by Schneider Electric; the end‑of‑commercialization date listed on Schneider Electric pages is December 31, 2018, and regional pages sometimes reflect later end‑of‑life details. Schneider Electric lists the replacement as a redundant Modicon M580 processor with 16 MB of memory that can support up to 61 Ethernet devices and 16 remote IO racks of X80 and Quantum IO under option BMEH584040.