Mitsubishi AJ55TB2-16T 16-Point AC Digital Input Module for MELSEC-F Series

The Mitsubishi AJ55TB2-16T (AJ55TB2-16T) is a dedicated AC digital input module developed by Mitsubishi Electric for integration within the MELSEC-F (FX) series programmable logic controller family. Engineered to expand system input capacity, this unit provides 16 digital AC input points designed to detect and process incoming alternating current field signals reliably. Serving as an equivalent unit to the FX16EXA1TBUL configuration, the module allows legacy automation setups to interface directly with external AC sensors, switches, pushbuttons, and auxiliary contact circuits without requiring external signal conversion hardware. Operating as a critical interface component within industrial automation architectures, the AJ55TB2-16T translates discrete AC input signals into digital status data for the host MELSEC controller CPU. This functionality is essential for machine automation, manufacturing lines, process monitoring, and packaging machinery where AC field switching devices are widely employed. Its terminal design facilitates straightforward wiring and panel integration, ensuring dependable signal reception, simplified troubleshooting, and consistent performance across diverse factory automation tasks and system maintenance upgrades.