Schneider Electric AS-B825-016 PLC Input Module

Schneider Electric's AS-B825-016 is a 16-channel discrete input module for Modicon 800-series controllers, converting 24 VDC sensor signals into PLC logic levels. Each of its inputs is a true-high 24 VDC input with optical isolation, delivering isolated channels that improve signal integrity in rugged industrial environments. The module requires an external 24 VDC power source (Vs) to feed the input circuits, specified up to 200 mA, and uses the AS-8534-000B825-016 terminal connector for wiring. With 16 independent input points and fast response characteristics—ON current around 6 mA at 24 VDC and typical transition times near 2.5 ms—the AS-B825-016 is a practical choice for sensing switches, proximity sensors, and other 24 VDC devices in automation, packaging lines, and machine tools, all while matching Modicon 800-series backplane architectures. As part of the Modicon 800 family of discrete I/O, it supports modular expansion and can be paired with other 800-series I/O modules to tailor input configurations for industrial control tasks.