The ECOVARIO® Series is composed of digital servo amplifiers developed by Jenaer Antriebstechnik. They have a peak power that ranges from 1.4 kW up to 10 kW. They can operate with two or three phased synchronous servo motors, DC motors and EC motors. Versions with 1 or 2 axis is also provided. The amplifiers in this series have wide variations in interfaces and functionality. Optionally, this series may be available with the STO (Safe Torque Off) function.