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RX111
YROTATE-IT-RX111 Motor Control Kit
b) The analog measurement signals from power stage, in particular the current readings and the DC link voltage
reading are clamped (with diodes from logic GND and to logic Vcc) and weakly filtered, then directly
connected to the A/D converter input pins of the microcontroller, so the external power stage has to take
care of the gain and the offset of these signals.
c) The ground connection is always active, and it represents the reference for all the interface signals.
In the next figure a simple example regarding how the power board connections have to be arranged, is presented.
In this schema it is supposed that the power board has its own supply for the power module (+15V); +15 to +24V
supply from power board is also used to supply the microcontroller (thanks to jumper JP6 in microcontroller board).
Please refer to the complete schematics for further details that are available on the CD-ROM delivered with the
inverter kit.
UM-YROTATE-IT-RX111 Rev.1.00
Oct 15, 2014
Page 13 of 61