Advanced AC Electronic Drives. Amatrol’s AC Electronic Drives Learning System (85-MT101) teaches industrial AC electronic motor drives that are used to provide accurate control of speed, position, and acceleration in applications such as CNC machine tools, conveyors, robots, mixers, and presses. The 85-MT101 teaches learners how to troubleshoot electronic drive motor control circuits under realistic conditions with circuit faults that can be introduced throughout the system.