BC9191 Beckhoff Fieldbus Modules & Gateways

The Beckhoff BC9191 module is part of the BC Bus Terminals family, offering versatile I/O coupling for both digital and analog signals. As a combi I/O coupler, it provides 17 combi channels and supports a nominal voltage of 120 V AC, 230 V AC . Designed for building and industrial automation, its primary function is to interface diverse field signals—digital switching, encoder inputs, analog voltage, resistance and RTD measurements—into a single, PLC-integrated device. Detailed technical capabilities include simultaneous analog sampling at rates below 0.1 ksps with a resolution of <12 bit and measurement uncertainty better than 1% . Analog conversion requires more than 10 ms , while digital inputs and outputs feature a typical digital filter time of 3.0 ms . The unit delivers both 1 A and 10 A output currents through potential-free contacts and incorporates an integrated PLC for local logic execution. These precise specifications ensure reliable signal processing and effective noise suppression in complex automation environments. Compatibility with multiple communication standards— EnOcean , Ethernet and K-bus —allows seamless integration into existing control architectures. Being a coupler/junction/media converter with combi I/O channels, the BC9191 excels in flexibility and scalability, requiring minimal wiring effort. Its robust design and precise signal conditioning support demanding industrial applications where accuracy, efficiency and synchronized operations are critical. Employing this device enhances system modularity, reduces installation time and delivers consistent performance in building and process automation installations.