$3,999.95 CALL TODAY! Eurotherm 620 Vector Link AC Drive Manual can be found at http://www.bttautomatyka.com.pl/pdf/HA463584.pdf The 620 Vector enables very high performance control of 3-phase AC induction motors fitted with a compatible encoder. It offers the user great system flexibility, allowing easy integration into various control schemes. The plain language Man-Machine Interface (MMI) greatly simplifies setting up and commissioning the 620 Vector. A simplified block diagram of a 620 is shown in Figure 2.13. This illustrates the basic internal arrangement of the drive with the circuitry split between the control circuits and power circuits. The control circuits are common to all types of the 620 Vector Drive.