Siemens TI305-55N 16 Point 24VDC Input Module

SiemenS TI305-55N is a 16-point digital input module for TI305-based automation systems, delivering sixteen independent input points that accept 24 V AC or 24 V DC signals. It is designed to connect field devices such as sensors and switches to the PLC, transmitting on/off states to the control logic. When used with AC inputs, the module supports standard power frequencies of 50 or 60 Hz, aligning with global industrial electrical standards, while DC inputs expect a 24 V level. The TI305-55N variant specifies the 16-point 24 VAC/DC input option, making it a common choice for expanding the digital input capacity in legacy Siemens TI305 configurations. In typical installations, the module interfaces with a compatible processor to monitor 24 V field devices and feed digital signals into control programs, enabling straightforward wiring of pushbuttons, limit switches, and other industrial sensors. Given its age and lineage in TI/Siemens automation hardware, it’s important to confirm compatibility with your specific controller model and firmware revision before integrating or replacing in an existing system.