Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 316)

316 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 6 Integrated Motion on the EtherNet/IP Network Applications for PowerFlex 755 AC Drives
Hardware Over Travel
Considerations When a PowerFlex 755 drive is configured for Integrated Motion on the
EtherNet/IP Network none of the I/O option modules are supported.
Therefore, inputs associated with over-travel limits must be wired into controller
input modules and then control must be programmed in the Logix Controller.
Operation of this control is accomplished by programming the controller to
monitor the over travel limits via digital inputs and setting the desired action
when over travel limits are exceeded. Possible actions include (but not limited
to), setting an alarm, stopping the motion planner, stopping the drive, or
performing a shutdown function.
The sample ladder logic code below depicts a possible solution for performing
hardware over travel control (the code is an example only and is not the only
solution for monitoring hardware over travel limits). Each individual application
determines the requirements for the necessary hardware over travel control. This
example monitors digital inputs and issues a motion axis stop if either input goes
false and generates an output indicator that could be used to annunciate the stop.