Manual

5–4 Sequencing Co-injection
Publication 1771-6.5.126 – March 1998
Suspended Outputs are Programmed
Co-injection lets you program suspended outputs with these choices:
• suspended outputs are turned off (previous example)
• suspended outputs are your set-outputs in INC61-64 (example 1)
• the injection output is closed-loop controlled (example 2)
For these examples, refer to the diagram on the next page.
Example 1, You suspend QI(A)’s outputs with set-outputs:
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 Yes No IPC02-B10 = 1
During suspended injection, when using closed-loop control of the
injection valve, the other three outputs are set-outputs in INC61-64.
B12
B11
0 0 = control all four outputs with set-outputs stored in INC61-64
0 1 = control injection valve with pressure setpoint in IPC55
1 0 = control injection valve with velocity setpoint in IPC54
1 1 = error condition
all four
outputs are
set-outputs
n/a
IPC02-B11 = 0
IPC02-B12 = 0
screw position (of other) to exit suspended injection at bbb at aaa
IPC08 = bbb
IPCB08 = aaa
velocity setpoint for closed-loop control during suspended injection No No IPC54 = zero
pressure setpoint for closed-loop control during suspended injection No No IPC55 = zero
screw position to suspend own injection at aaa No IPC56 = aaa
your velocity or pressure set-outputs during suspended injection in INC61-64 n/a INC61-64
Example 2, You suspend QI(A)’s outputs with a closed-loop injection
pressure control setpoint (ppp.p) in IPC55 and your set-outputs in
INC61-64. (IPC55 overrides its equivalent set-output in INC61-64.)
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 Yes No IPC02-B10 = 1
During suspended injection, when using closed-loop control of the
injection valve, the other three outputs are set-outputs in INC61-64.
B12
B11
0 0 = control all four outputs with set-outputs stored in INC61-64
0 1 = control injection valve with pressure setpoint in IPC55
1 0 = control injection valve with velocity setpoint in IPC54
1 1 = error condition
Closed-loop
pressure
setpoint
n/a
IPC02-B11 = 1
IPC02-B12 = 0
screw position (of other) to exit suspended injection at bbb at aaa
IPC08 = bbb
IPCB08 = aaa
velocity setpoint for closed-loop control during suspended injection No No IPC54 = zero
setpoint for pressure control during suspended injection at ppp.p n/a IPC55 = ppp.p
screw position to suspend own injection at aaa n/a IPC56 = aaa
your set-outputs during suspended injection at INC61-64 n/a INC61-64