Escon 36/3 EC is a four-quadrant PWM servo controller designed for efficient control of brushless dc motors with Hall sensors up to approximately 100 W. The controller has excellent control properties and a very fast digital current controller with a large bandwidth for optimal motor current/torque control. The drift-free, dynamic speed behavior enables a speed range of 0-150,000 rpm. It provides a wide range of functions, with fully configurable digital and analog inputs and outputs.