The Danfoss EC+ concept allows permanent magnet (PM) motors with non IEC or IEC conform
dimensions to be used with Danfoss VLT® frequency converters. Danfoss has integrated the necessary
control algorithm in the existing VLT® converter series such as the VLT® HVAC Drive. This
means that there are no changes for the operator. After entering the relevant motor data, the user
benefits from the high motor efficiency of EC technology.

Advantages of the Danfoss EC+ concept