Rockwell Automation SA3100 Distributed Power System Drv Config,Program - Manual (Page 29)

Configuring the UDC Module, Regulator Type, and Parameters 2-17
• MCR Connected To Output Contactor
If you have a motor control relay (MCR) on the output of the drive (output
contactor), select this option. If there is only a manual disconnect switch and no
contactor under automatic control, do not select the output contactor option. The
default selection is no contactor.
Power Module
• Part Number
Select a part number from the list of supported Power modules ( x nnn, where x is
the voltage code and nnn is the horsepower rating). The current ratings in the list
are the rated RMS currents at the drive’s default carrier frequency as listed in
Appendix H, with no overload at 40° ambient temperature. The power module is
capable of 150% of the maximum amps value for 1 minute. There is no default
selection. You must choose a part number from the list.
The motor must be able to operate off the Power Module selected at the voltage
level entered as the Input Voltage parameter. A warning will be issued when if an
incompatibility is found.
• Carrier Frequency
The carrier frequency selected will determine the Power Module’s switching
frequency. You can select from a list of preset carrier frequencies: 1.5 kHz, 2 kHz, 4
kHz, 6 kHz, 8 kHz, 10 kHz or 12 kHz; or you can enter a value between 1.5 kHz and
12 kHz in increments of 100 Hz. The hardware in some cases will have slightly
coarser resolution at the higher frequencies. See Appendix H for the default carrier
frequency and carrier frequency limit for the Power Module you have selected.
All Power Modules are rated at their default switching frequency, but they can be
operated above this limit by de-rating the unit’s output. Refer to the SA3100 Power
Modules instruction manual (S-3058) for more information.