VLT ® 2000 Series Chapter 1 I How the VLT is built up .............................. Page 22 How the VLT works I The Danfoss VVC principle ........................ Page 23 I Factory-programmed optimization............. Page 24 I Control accuracy ....................................... Page 25 I Protection against mains disturbance........ Page 25 I Galvanic isolation....................................... Page 25 I Advanced motor protection ....................... Page 25 I Long motor cables .................................... Page 25 I Functional diagrams .................................. Page 26 Section 1 Section 2 Section 3 MG.20.B6.02 – VLT is a registered Danfoss trademark 21