SAF Drive Systems CA409-2 Termination Card

SAF Drive Systems CA409-2 Termination Card is a PC-board backplane termination module for SAFphire SAFBUS rack systems. As the bus termination card for the SAFphire rack backplane, it ensures proper signaling across the SAFBUS and provides a fault relay output that can be wired into an emergency-stop or safety interlock circuit. The card also includes status indicators: green +15V and green -15V LEDs to show the health of the respective power rails, a 15V logical diagnostic output, and two bipolar analog diagnostic outputs used to monitor backplane conditions in operation. Installing one CA409-2 per SAFphire rack in the half-height slot is standard practice to maintain proper bus termination and fault monitoring across the system. In distributor listings, the CA409-2 is described as a backplane/termination card for SAF Drive Systems, and several current sources indicate it is discontinued by the manufacturer, meaning available units are typically refurbished or surplus. This termination card plays a critical role in detecting faults and signaling status to the SAFphire controller, supporting safer, more reliable operation of SAF Drive Systems' high-performance drive control networks.