Rockwell Automation 23P PowerFlex DC Stand Alone Regulator and Gate Amplifier - Manual (Page 40)

40 Rockwell Automation Publication 23P-UM001D-EN-P - July 2012
Chapter 2 Stand Alone Regulator Installation, Wiring and Configuration
SAR Programming and
Startup
SAR programming and startup require a Human Interface Module (HIM) or
DriveExplorer™ or DriveTools SP™ software with a network connection made
using a communication adapter. The SAR is not sold with a HIM or
communication adapter. These products must be purchased separately. See
Appendix B - “HIM Overview” and Appendix E - “Installing a Communication
Adapter”, respectively, in the PowerFlex Digital DC Drive User Manual,
publication
20P-UM001 , for details.
SAR Parameter Configuration
To accommodate incoming line voltages that are greater than 690VAC,
parameter 464 [SAR Volts Scale] is used to scale the actual values of the system
voltages so that they can be displayed on the HIM or in programming software
without having the regulator directly connected to the higher voltage levels. The
upper limit is 1200VAC. However, there are means to accommodate greater
voltages.
The SAR has a maximum rating of 690VAC. The incoming AC line and the
power module output / motor voltage needs to be scaled to ensure that the
voltages the regulator receives are within its’ rating. When the voltage is reduced,
the scaling parameter (464) provides the means to add a multiplier to the voltage
values so that the displayed voltages reflect those at the actual regulator input and
output.
Example:
If the actual voltage that appears at the AC input to the SAR is 400VAC (due to
resistor scaling) and the incoming line is at 1000VAC, then the scaling value is
the ratio of the two voltages:
464 [SAR Volts Scale] = 1000VAC / 400VAC = 2.5
The external scaling of the voltage to the regulator will be done via resistors.
Consult with Development Engineering for component sizing and gate
configuration wiring guidelines, for systems greater than 690VAC incoming line,
or low voltage.
All other parameter settings for the SAR are the same as those documented in
Chapter 3 “Programming and Parameters” in the PowerFlex Digital DC Drive
User Manual, publication
20P-UM001 .
SAR Startup
When installation of the SAR is complete, perform the procedures in Chapter 2
“Drive Start Up” in the PowerFlex Digital DC Drive User Manual, publication
20P-UM001 .