KEYENCE CU Series Control Unit Manual

This document details the KEYENCE CU Series compact control units, which supply up to 200 mA and are suitable for DIN-rail mounting. It covers the multi-functional CU-21TA model featuring a multi-mode timer (ON-delay, OFF-delay, One-shot) and an edge-synchronous function for sensor synchronization, along with specifications, connections, and part names for both the CU-21TA and standard CU-21A models.