Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE - Manual (Page 114)

Load Initial Profile Values
Chapter 8
8-19
Expert Response Compensation
(PPC04)
-BITS 11, 10, 09, and 08 determine whether you apply Expert
Response Compensation (ERC

) to plastication profiles. ERC is an
exclusive algorithm that adjusts for changes in your machine,
hydraulics, raw materials, and other process variables. It
compensates for abrupt upsets and long term deviations.
0 = Expert Response Compensation ON
1 = Expert Response Compensation OFF
We recorded these bits = 1 (ERC = Off) on worksheet 8-C.
OpenĆ or ClosedĆLoop Control
(PPC04)
-BITS 03, 02, 01, and 00 determine whether you use open-loop or
closed-loop control of plastication profiles. In open loop, a valve
position moves the cylinder without sensor feedback. In closed loop,
sensor feedback controls the valve regulating pressure or screw RPM.
0 = Closed loop
1 = Open loop
We recorded these bits = 1 for open-loop control on Worksheet 8-C.
Important: All other bit selections in PPC04 should be zero.
The valve spanning procedures in chapter 9 require these initial bit
settings. Where required, we help you select correct final bit settings for
your application in chapter 10. For additional information, refer to the
Plastic Molding Module Reference Manual (publication 1771-6.5.88).
RPM Setpoints
(PPC09, 13, 17, 21, 25, 29, 33, 37, 41, 45, and 49)
Use these words when configuring RPM vs. position or time profiles in
units of revolutions per minute. Each setpoint controls the RPM of its
corresponding segment. You may use from 1 to 11 segments in your
profile. The procedures in chapter 9 require all eleven segments.
Record the initial value of one-half maximum attainable screw RPM per
your OEM specifications on Worksheet 8-C for each of the 11 RPM
setpoints listed above.
The valve spanning procedures in chapter 9 require these initial values. For
additional information, refer to the Plastic Molding Module Reference
Manual (publication 1771-6.5.88).
Determine Word Values for
Worksheet 8ĆC