Rockwell Automation 1771-QI,D17716.5.126 PLASTIC MOLD.MODULE - Manual (Page 137)

5–5 Sequencing Co-injection
Publication 1771-6.5.126 – March 1998
During B, A Maintains Low Pressure or Flow (plateau).
In this sequence, QI(A) maintains low pressure or flow with its
profile which is NOT interrupted. QI(B) starts and completes its
profile while QI(A)’s profile is at a low plateau.
QI(A)’s Injection Profile
1 2 3 4 5
2 3 1
QI(B)’s Injection Profile
0
Pressure
Pressure
Time
Time
plateau
suspend
start
aaa
QI(B) is set up to suspend injection at the start, but start injection at
A’s screw position (aaa) that you determine. QI(B) is set up to
inhibit transition to pack/hold. QI(A) has NO co-injection setup.
Both are commanded to start at the same time.
Description: QI(A) setup: QI(B) setup: Co–inj. word/bit:
enable injection cycle suspension on start No Yes DYCB03-BO4 = 1
disable automatic sequence into pack/hold No Yes IPCB02-B08 = 1
enable injection cycle suspension on screw position No No IPC02-B10 = 0
screw position (of other) to exit suspended injection No at aaa IPCB08 = aaa
screw position to suspend own injection No No IPC56 = zero
We show the same ABA sequence, plotted against position.
QI(A)’s Injection Profile
aaa
1 2 3 4 5
2 3 1
QI(B)’s Injection Profile
0
Veleicity
Velocity
Position
Position
plateau
suspend
start