3 Product Overview3.1 Intended UseA drive system is a type of electronic motor controller that converts AC mains input into a variable AC waveform output.The system then regulates the frequency and voltage of the output to control the motor speed or torque. This drive systemis designed by the installer, using the VLT® Parallel Drive Modules basic kit and any selected options kits. The basic kit iscomposed of 2 or 4 drive modules and connecting hardware, and is UL 508 C compliant.This drive system can be used in residential, industrial, and commercial environments, in accordance with local laws andstandards.NOTICEIn a residential environment, this product can cause radio interference, in which case supplementary measures may berequired to mitigate the interference.Foreseeable misuseDo not use the drive system in applications that are not compliant with specified operating conditions and environments.Ensure compliance with the conditions specified in chapter 7 Specifications.3.2 Drive SystemThe drive system is designed by the installer to meet specified power requirements, using the VLT® Parallel Drive Modulesbasic kit and any selected options kits. The basic kit consists of connecting hardware and either 2 or 4 drive modules, whichare connected in parallel.NOTICEIllustration 3.1 shows a system using 4 drive modules. A system using 2 drive modules is similar, except for theconnecting hardware. Illustration 3.1 shows the busbar option kit. The installer can use other connection methods,including locally manufactured busbars or electrical cables. The installer is responsible for the details of the drivesystem construction, including connections and proper grounding.Product Overview User GuideMG37L202 Danfoss A/S © 08/2017 All rights reserved. 73 3