Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 14)

Overview of the Clamp and Eject Mode
Chapter 1
1-3
Figure 1.2
Example Clamp Close
L
0
Stationary
Platen
Clamp
Cylinder
Position
Velocity
Moving
Platen
1st
Close
Profile
2nd
Close
Profile
3rd
Close
Profile
X
Three different close profiles have been provided to allow you to initiate
the following operations between profiles:
pick up the 3rd plate of a mold (on a floating 3-plate mold) or set cores
program other events for all valves
either automatically bridge between profiles or allow user programming
to decide when to begin the next profile
Each of these three profiles is subdivided into three position segments
(shown above each profile as in Figure 1.3). You can change clamp
velocity or pressure up to three times in each profile, or up to nine times
for the entire clamp close phase.
Figure 1.3
Example Clamp Close Position Segments
Position
Velocity
1st
Close
Profile
2nd
Close
Profile
3rd
Close
Profile
1 1
1
2
2
2
3
3
3
Segments
L
0
Stationary
Platen
Clamp
Cylinder
Moving
Platen
X
Important: You may use as many or as few profiles and/or segments
within profiles as needed for your molding application. If using a single
close fast motion, use the first segment of the 1st close profile. The Low
Pressure Close Profile must follow.
After completing the last segment in each profile, the QDC module either
switches immediately to the next programmed segment of the next desired
profile or waits for a command from your PLC program to continue.
After completing the last configured close profile, the QDC module either
switches immediately to the first programmed segment of Low Pressure
Close, or waits for a command from your PLC program to continue.