Altivar ATV320 Series Professional range of AVT320 Variable speed drives from Schneider Electric. The Altivar machine AVT320 drive is a frequency inverter for 380 V to 500 V 3 phase asynchronous and synchronous motors rated from 0.18 KW to 15 KW and features more than 150 functions and is robust, compact and easy to install. The Logic function offers simple control system functions. With various communication cards available as options, the Altivar AVT320 drive integrates perfectly into the main control system architectures. All models are highly reliable and excellent quality. Features and Benefits Easy-fit communication cards in cassette format. STO: Safe Torque Off safety function SLS: Safely Limited Speed safety function SS1: Safe Stop 1 safety function SMS: Safe maximum Speed GDL: Guard Door Locking Different mounting options depending on the machine (vertical, horizontal, with the option to offset the control module when the drive is mounted on its side, side-by-side) Applications 150 further functions, including application-specific functions. (Conveying, cutting, hoisting, etc.)