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Rockwell Automation Publication 750-RN034B-EN-P - November 2014
PowerFlex 753 Drives (revision 10.003)
Known Anomalies
This section describes the known anomalies that are present in this revision.
Feedback Selection
The HIM startup on the PowerFlex 753 drive includes a feedback device
selection step. Depending on the option modules installed, that step may first ask
the user to choose a port, then a parameter. In some situations, the list of ports
incorrectly shows multiple copies of “Port 0 - PowerFlex 753” followed by the
feedback port/module.
The incorrect behavior happens only under the following conditions:
•
It is the first time that startup feedback selection has been run since
flashing the drive.
•
The feedback module is a dual encoder or UFB and no other option
modules are installed.
•
A reset to defaults of the drive NVS parameters has not been performed
since the drive was last flashed.
When the incorrect port list appears, it is still possible to successfully select the
feedback module port by following one of these methods.
•
Scroll past the multiple copies of Port 0 to reach the desired feedback
module.
•
Press the Esc soft key to back up one screen, then select “Feedback” and
press the Enter soft key to display the port selection screen a second time.
This time the correct list will be shown.
Persistent Stop Command with Profile Message Fault Action
In an application with the use of a PowerFlex 753 along with the 20-750-ENETR
dual port Ethernet/IP module, a persistent stop command may appear in some
cases. The action of disconnecting the Ethernet cable from the 20-750-ENETR
module, which will result in the drive stopping, may follow with a nuisance fault
action. This fault action previously noted is persistent communication of stop
commands.
Saving Parameters using Drive Explorer
In an application with the use of a PowerFlex 753 along with the 20-750-ENETR
dual port Ethernet/IP module, in which a user attempts to save all parameters
using Drive Explorer in some causes the save execution does not complete. When
attempting to execute the save all parameters in Drive Explorer the software tool
enters an infinite loop and does not progress through the save in some instances.
To exit the loop, press the cancel button and check if the text file has been saved.
