4-quadrant PWM servo controller for motors up to 250W

April 17, 2012 // By Julien Happich
Maxon motor's Escon 50/5 is a compact and powerful 4-quadrant PWM servo controller that offers efficient control of permanent-magnet activated brushed DC motors and brushless EC motors up to approximately 250 Watts.

The drift-free yet extremely dynamic speed behavior enables a speed range of 0 to 150,000 rpm. The servo controller provides a wide range of functions with fully configurable digital and analog inputs and outputs and can be run in various operating modes (speed controller (closed loop), speed controller (open loop), current controller). It is well matched to maxon's range of motors and thus allows dynamic drive solutions that meet the highest demands. The compact servo controller is controlled by an analog set value specified via analog voltage, external or internal potentiometer, fixed value, or by means of PWM signal with variable duty cycle. Other interesting features are, for instance, the ability to enable or disable the power stage depending on the direction of rotation, or to use speed ramps for acceleration and deceleration. The speed can be regulated by digital incremental encoder (2-channel, with/without line driver), DC tacho, or with Hall sensors.

The servo controller has been designed specifically with easy startup and user-friendliness in mind. Hence, no in-depth knowledge of drive technology is required. When the servo controller is connected to a PC via a USB port, it can easily and efficiently be configured with the graphical user interface "Escon Studio". A large variety of functions, user-friendly software wizards, and a well-designed automatic procedure to fine-tune the controller come in handy during startup and configuration of the inputs and outputs, for monitoring, data recording, and diagnostics. The Escon 50/5 features protective circuits against overcurrent, excess temperature, undervoltage and overvoltage, against voltage transients and short-circuits in the motor cable. Furthermore it is equipped with protected digital inputs and outputs and adjustable current limitation to protect motor and load. The motor current and the actual speed of the motor shaft can be monitored by means of the analog output voltage.

Visit maxon motor at http://escon.maxonmotor.com