48 Rockwell Automation Publication PFLEX-RM003E-EN-E - January 2011
Chapter 1 Detailed Drive Operation
Electronic Gearing
See Position Loop - Follower (Electronic Gearing) on page 90
Faults
Faults occur due to conditions within and/or outside the drive that could affect
drive operation or application operation. These events or conditions are
considered to be of significant magnitude that drive operation should or must be
discontinued. Faults are reported to the user via the HIM, communications and/
or contact outputs. Faults are selected during commissioning of the drive.
Examples of faults include: Encoder loss, communication loss or other exceptions
within the drive. A complete list of faults is included in the Troubleshooting
chapter of the PowerFlex 700S AC Drive Phase II Control - Programming
Manual, publication 20D-PM001
.
Configuration
Parameters 365 [Fdbk LsCnfg Pri] through 399 [Position ErrCnfg] program the
response of the drive to various conditions. Responses include Ignore, Alarm,
Fault Coast Stop, Fault Ramp Stop, and Fault Current Limit Stop.
Parameters 323 [Fault Status 1] through 325 [Fault Status 3] indicated any faults
that are active.
Configuration Example
Parameter 371 [Mtr OL Trip Cnfg] is set to a value of 2 “FltCoastStop.” This
configures the drive to set the fault bit, 10 “Mtr OL Trip”, in parameter 323 [Fault
Status 1], when the motor overload trip event occurs and the drive and motor to
coast to a stop.
Filters
The PowerFlex 700S has various filters used to assist in tuning the drive. The
following sections can be used to assist you in using these filters, which use
frequency and time domain analysis.
Key Words
Frequency response, radians, filter, notch
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