Allen-Bradley 163278 Printed Circuit Board Assembly

This is the Allen-Bradley 163278 printed circuit board assembly, a replacement PCB for the Allen-Bradley 1391 Digital Servo Drive Control. The board is identified by part number 163278 and is intended to be used as a substitute within compatible 1391 servo drive control systems. It serves as the control electronics in the drive, supporting automation and motion-control applications that rely on Allen-Bradley servo technology. As a 163278 PCB assembly, it should be matched to the exact drive configuration—confirm the 163278 designation and ensure the drive chassis, connectors, and mounting provisions in your equipment align with this replacement. Because it is an exact-match replacement for the 1391 drive, it helps preserve compatibility with existing cabling and interfaces in your automation setup. This description reflects the specific product identity and its role as a printed circuit board assembly for the 1391 Digital Servo Drive Control.