Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 508)

508 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix E Integrated Motion on EtherNet/IP
An Integrated Motion on EtherNet/IP Axis can have up to two Integrated
Motion on EtherNet/IP feedback devices that are associated with it. When two
devices are in use, they are called the “Motor Feedback Device” and the “Load
Feedback Device.” These two devices are also referred to as “Integrated Motion
on EtherNet/IP Feedback 1” and “Integrated Motion on EtherNet/IP Feedback
2” respectively.
Each Integrated Motion on EtherNet/IP Feedback Device has an Integrated
Motion on EtherNet/IP Feedback Type associated with it. This describes the
type of encoder to be used as that Feedback Device.
When configuring a drive using RSLogix 5000 and Integrated Motion on
EtherNet/IP, the “Associated Axes” page of the drive’s “Module Properties”
dialog is used to associate each Integrated Motion on EtherNet/IP feedback
device with a feedback hardware channel on the drive itself.
Before using the “Associated Axes” page, the RSLogix 5000 user first has to use
the “Module Definition” dialog on the “General” tab of the “Module Properties”
dialog to define which feedback modules are present in the PowerFlex 755
control pod.
After the available feedback cards have been defined, the user can enter a
PowerFlex 755 hardware feedback channel for each Integrated Motion on
EtherNet/IP feedback device. The user is given a drop-down list of available
hardware feedback channels, with each channel described by the control pod port
number of the feedback module and the channel within that port. If a feedback
module has two hardware feedback channels, the two channels are called
“Channel A” & “Channel B.” If there is only one channel, it is called “Channel A.”
The correct wiring for an encoder in this system depends on three things:
• The type of feedback card
• The type of encoder
• Which hardware feedback channel to connect the encoder (A or B)
In general, if there is only one way to wire a particular type of encoder to a
particular feedback module, then that wiring works regardless of whether the
Integrated Motion on EtherNet/IP configuration associates it with hardware
Channel A or hardware Channel B on that feedback module.