Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 221)

Tune Your Machine
Chapter 10
10-13
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. Time None required N/A IPC09 N/A one of IPC60, 61, 62, or 63
PressureĆlimited Vel/Time None required N/A IPC09 N/A one of IPC60, 61, 62, or 63.
IPC57, 58, and 59
Pressure vs. Position None required N/A N/A IPC10 one of IPC60, 61, 62, or 63
Pressure vs. Time N/A None required N/A IPC10 one of IPC60, 61, 62, or 63
Pack
Pressure vs. Time
N/A HPC11 N/A HPC09 or
HPC10 ----
Hold
Pressure vs. Time
N/A HPC28 N/A HPC26 or
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
Shot Size is the amount of molten plastic injected into the mold. Cushion is
the amount of molten plastic that remains in the barrel after injection.The
sum of shot size (PPC61) plus cushion (PPC62) tells the QDC module
where to terminate the Plastication profile.
During injection, the QDC module does NOT terminate the shot at
cushion, but continues injecting until one of the three injection transition
conditions occurs. These three conditions during the injection profile are:
elapsed time exceeds a preset limit
ram (screw) pressure exceeds a preset limit
ram (screw) position exceeds a preset limit
Cushion, Shot Size, and
Transition Setpoints