A four-quadrant PWM servo controller from Maxon is designed for use with DC motors up to 72W. The Escon 36/2 DC is a fast digital current controller with bandwidth for optimal motor current and torque control. The drift-free dynamic speed behavior enables a speed range of 1–150,000rpm. The servo controller provides a wide range of functions, with fully configurable digital and analog inputs and outputs. Use with the company’s range of motors enables high demanding and dynamic drive options. It can be run in various operating modes (speed controller [closed loop], speed controller [open loop], and current controller).

The ultracompact servo controller is controlled by means of an analog set value. The value can be specified by means of analog voltage, an external or internal potentiometer, a defined value, or by means of a PWM signal with variable duty cycle. Other functions include 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 means of a digital incremental encoder (2-channel, with/without line driver), DC tacho, or without encoder (IxR compensation).

Designed to be user-friendly with an easy start-up, 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 "ESCON Studio" graphical user interface. During startup and configuration of the inputs and outputs, monitoring, data recording, and diagnostics, the user has access to a variety of functions and is assisted by software wizards, as well as an automatic procedure for fine-tuning the controller. No additional external filters or motor chokes are required, and preassembled cables for the startup are available as accessories.