Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 21)

Overview of the Clamp and Eject Mode
Chapter 1
1-10
Other Eject Features
The QDC Module gives you the following additional features:
the ability to repeat the ejector cycle a number of times, changing from
advance to retract determined either automatically or by command from
your PLC program
Ejector Forward Dwell - the ability to pause after completing the first or
last ejector advance stroke. Use this feature so a robot can pick off a
part when ejectors are fully extended
Ejector “Tip” Strokes - the ability to “shake” the part off the ejector.
You may program interim single-segment advance and retract tip strokes
that occur after the first advance stroke and before the last retract stroke
Figure 1.11
Advance, Retract and Tip Strokes
Full
Retract
Full
Advance
Tip Strokes
First Full Advance
Tip Advance
Tip Retract
Last Retract
1
1
1 = Ejector Forward Ć Dwell
:
:
Tip Retract