Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE - Manual (Page 84)

Load Initial Configuration Values
Chapter 7
7-15
Important: These recorded PID gain constants and closed-loop tuning
procedures in chapter 10 assume the selection of independent (A-B) gains.
If, after attempting to tune your pressure loops in chapter 10, you believe
you must use dependent (ISA) gain constants, refer to section 3 of the
Reference Manual (1771-6.5.88) for information on this option.
Expert Response Compensation Minimum Percentages
(INC05Ć06, PKC05Ć06, HDC05Ć06, PLC05Ć06)
The QDC module uses a proprietary control scheme called Expert
Response Compensation

. It accounts for changes in your machine,
machine hydraulics, raw materials, and other process variables. It
compensates for abrupt upsets and long term deviations to your process.
We already recorded an initial value of 10% (1000) on all worksheets.
We help you select final values required for your application in chapter 10.
For additional information, refer to section 3 of the Plastic Molding
Module Reference Manual (publication 1771-6.5.88).
Unselected Valve SetĆoutput Values
(INC09Ć12, PKC09Ć12, HDC09Ć12, and PLC09Ć12)
Earlier in this chapter, you told the QDC module which of its four outputs
was being used to control pressure and flow profiles. Your machine
hydraulics probably require that the remaining unselected valves connected
to your QDC module assume a set-output condition during the profile.
Words 09 through 12 define set-output values for your unselected valves.
The QDC module sets its four outputs to the values in these words each
time it starts the appropriate profile with this exception:
Important: The QDC module ignores the set-output value associated with
the selected valve, and drives that output independently.
To assist you when determining unselected valve set-output values, refer to
Table 7.A. We present this table for reference, only. Your application will
dictate your setpoints.
Set Values for Expert
Response Compensation

(ERC)
Determine Unselected Valve
SetĆoutput Values