Rockwell Automation 7703E Medium Voltage SMC OEM Components - 10-15 kV - Manual (Page 41)

Rockwell Automation Publication 7703E-IN001E-EN-P - July 2014 41
Final Test Procedures Chapter 7
7. Check all line and load resistances to ground at the interface board voltage
feedback test points. The measurement for all voltages should be within
11…13 kΩ.
Additional Tests Perform additional tests, as outlined in Chapter 3 of User Manual, MV SMC Flex
Motor Controller, Bulletins 1503E, 1560E and 1562E, Publication
1560E-UM051_-EN-P .
Programming MV SMC Flex Module
Refer to Chapter 4
(1)
for programming procedures.
The default (factory) parameter settings are as shown in Appendix B
(1)
.
If the factory settings are not suitable for the application, program the module to
meet the application requirements.
Voltage Sensing Module 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.
Table 9 - MV Ratio
(1) References apply to publication 1560E-UM051_-EN-P .
IMPORTANT The module should be programmed with an understanding of how the SMC
functions, and the characteristics of the motor and driven load. Inappropriate
settings may elicit unexpected results such as lack of acceleration torque or
full-voltage starting. For Pump Control applications, refer to Application
Considerations in publication 1560E-UM051_-EN-P .
(1)
Voltage MV Ratio
12000V 126
14400V 97