Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 240)

Tune Your Machine
Chapter 10
10-12
Important: Avoid multiple adjacent segments having the same velocity or
pressure setpoint. For better control, use a constant velocity or pressure
over a single equivalent length segment.
For injection velocity or pressure profiles, you must always program one
final velocity or pressure setpoint without an associated end-of-position
setpoint that the QDC module uses until it reaches transition (for injection)
or 100% shot size (for plastication).
Time Setpoints
Time setpoints define the duration of each profile segment that applies
pressure to the ram (screw).
Important: Avoid multiple adjacent segments having the same pressure
setpoint. For better control, use a constant pressure over a single
equivalent time segment.
For injection or plastication pressure profiles, you must always program
one final pressure setpoint without an associated time setpoint that the
QDC module uses until it reaches transition (for injection) or 100% shot
size (for plastication).
Minimum Profile Requirements
We present minimum requirements for inject-mode profiles. Use this as a
starting point for developing your own part-specific profiles.
Profile EndĆofĆSegment
Position Setpts
Time
Setpoints
Velocity
Setpoints
Pressure
Setpoints
Other
Injection
Velocity vs. Position None required N/A IPC09 N/A one of IPC60, 61, or 62
PressureĆlimited
Velocity vs. Position
None required N/A IPC09 N/A one of IPC60, 61, or 62
IPC57, 58, and 59
Pressure vs. Position None required N/A N/A IPC10 one of IPC60, 61, or 62
Pressure vs. Time N/A None required N/A IPC10 one of IPC60, 61, or 62
Pack
Pressure vs. Time
N/A HPC11 N/A HPC10
----
Hold
Pressure vs. Time
N/A HPC28 N/A HPC27
----
Plastication
Pressure vs. Position None required N/A N/A PPC10 PPC61 and 62
Pressure vs. Time N/A None required N/A PPC10 PPC61 and 62