Rockwell Automation 7703E Medium Voltage SMC OEM Components - 10-15 kV - Manual (Page 22)

22 Rockwell Automation Publication 7703E-IN001E-EN-P - July 2014
Chapter 3 PowerBrick™ Installation
The MV ratios shown above are nominal values and may be fine tuned to achieve
better accuracy on the display of the SMC Flex control module. While running
the motor in bypass mode, compare the voltage displayed on the control module
to a known accurate meter connected to the same source voltage as the motor the
MV SMC Flex is controlling. Parameter 106, MV Ratio, may be changed up or
down to match the Flex display to the external meter. A small change in ratio can
make a large change in the display, so 5 units at a time are recommended.
Increasing the ratio will decrease the displayed voltage, and visa versa.
Figure 8 - Voltage Sensing Board
To Interface Board Ground Connections