Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 126)

Load Initial Profile Values
Chapter 8
8-5
Profile Algorithm
(CPC03)
The following bits determine the algorithm for each clamp close profile.
- BIT 04 configures third clamp close profile
- BIT 02 configures second clamp close profile
- BIT 00 configures first clamp close profile
0 = Velocity vs. position algorithm
1 = Pressure vs. position algorithm
We set these bits to 1 for pressure vs. position on Worksheet 8-A.
Important: All other bit selections in CPC03 should be zero.
Expert Response Compensation
(CPC04)
- BITs 15, 13, 12, 11, 10, 09, and 08 determine whether you apply
Expert Response Compensation (ERC) to clamp close 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 set these bits to 1 (ERC = Off) on Worksheet 8-A.
OpenĆloop or ClosedĆloop Control
(CPC04)
- BITs 07, 05, 04, 03, 02, 01, and 00 determine whether you use open-
or closed-loop control of clamp close profiles. In open loop, a valve
position moves the cylinder without sensor feedback. In closed loop,
sensor feedback controls the valve regulating the pressure or velocity.
0 = Closed loop
1 = Open loop
We set these bits to 1 for open-loop control on Worksheet 8-A.
Important: All other bit selections in CPC04 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)