Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 35)

Publication 8720MC-IN002A-EN-P — December 2002
Commissioning Your 8720MC Analog Drive 2-3
In most cases the default values in the startup procedure are
adequate, however, you can modify the values, as needed, for your
application.
Before You Begin
In an initial start-up it is always good practice to check the motor
windings before you apply power to the drive. This is done by first
disconnecting the motor leads from the drive, terminals T1, T2 and T3.
Use a multi-meter to check continuity between the motor leads. There
should be very low resistance between T1 and T2, T2 and T3 and T3
and T1. Make sure there is no continuity between any of the motor
leads and the motor case ground.
Before reconnecting the motor leads make sure there is no continuity
between the motor leads and the temperature switch leads. Connect a
multi-meter between terminal P1-12 and each of the motor leads.
There should be almost infinite resistance. Also make sure there is no
continuity between terminal P1-13 and each of the motor leads.
Examine the drive input wiring carefully and make sure that there are
no shorts to ground on the incoming leads. Before you begin the
startup procedure, verify that the system has been wired correctly per
the drawings in Appendix A and that you have a good quality digital
multi-meter available for troubleshooting. In complicated systems it
may be best to remove all fuses and bring up the system gradually by
installing the device fuses as needed to bring on line additional
equipment.
IMPORTANT
If you need to exit the start-up procedures before
you are finished, you should always save your
parameters to EEprom memory. If you fail to do this
before removing power any changes made after the
last save to EEprom will be lost. The procedure for
saving parameters to EEprom is discussed in
Appendix B.