The INDRAMAT 109-0621-4A01-00 / 1090621-4B01-00 is an encoder interface/feedback board (PCB) used in Indramat servo drive systems to process and transmit precise encoder signals. This encoder board PCB converts rotary encoder feedback from motors into reliable digital data for motion control units, ensuring accurate speed and position regulation in CNC machines, robotics and automated production equipment. Designed for industrial environments, it supports robust signal integrity and long-term reliability. Ideal for OEM systems, retrofits or maintenance replacements, this Indramat encoder board helps maintain precise motion control, improve system responsiveness and reduce machine downtime.