Voltage Class - Allen-Bradley PowerFlex Reference Manual

Voltage class

2-171
Voltage class
PowerFlex drives are sometimes referred to by voltage "class." This class
identifies the general input voltage to the drive. This general voltage
includes a range of actual voltages. For example, a 400 Volt Class drive will
have an input voltage range of 380-480VAC. While the hardware remains
the same for each class, other variables, such as factory defaults, catalog
number and power unit ratings will change. In most cases, all drives within
a voltage class can be reprogrammed to another drive in the class by
resetting the defaults to something other than "factory" settings. The
[Voltage Class] parameter can be used to reset a drive to a different setup
within the voltage class.
As an example, consider a 480 volt drive. This drive comes with factory
default values for 480V, 60 Hz with motor data defaulted for U.S. motors
(HP rated , 1750 RPM, etc.) By setting the [Voltage Class] parameter to
"low Voltage" (this represents 400V in this case) the defaults are changed to
400V, 50 Hz settings with motor data for European motors (kW rated, 1500
RPM, etc). Refer to Figure 2.21.