Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 180)

Span Your Valves
Chapter 9
9-14
To do this: change FCC44, download the FCC block, and repeat steps 1-3.
Repeat as necessary.
Important: If downloading from your programming terminal, download
FCC followed by CPC with download bits B21/2 and 6 (chapter 4).
4. Copy final FCC44 (N43:40) into SCC44 and TCC44 (N43:100 and
160) and download these changes to the QDC module.
Important: If downloading from your programming terminal, download
FCC, SCC, TCC, and CPC in that order with download bits B21/2, 3, 4,
and 6 respectively (chapter 4).
What You Have Accomplished
The valve spanning procedure you just completed has defined the:
range of pressure available during first, second and third clamp close
end-of-range maximum and minimum signal levels for linear control of
the clamp close pressure valve in open-loop control.
For this
range limit
When trying to obtain
the pressure in:
The QDC module drives the selected
pressure valve to % output signal in:
Minimum FCC41, SCC41, TCC41 FCC43, SCC43, TCC43
Maximum FCC42, SCC42, TCC42 FCC44, SCC44, TCC44
Now for all open-loop clamp close pressure profiles, the QDC module
assumes a linear relationship between clamp pressure and signal output.
Set Profile Pressure Alarms
For clamp close profiles, set your maximum pressure alarms FCC57,
SCC57, and TCC57 (N43:53, 113, and 173) to a pressure that should:
not be exceeded during the clamp close profile
not exceed the maximum pressure control limit FCC42, SCC42, TCC42
Entering a value of zero disables this alarm.
Send new values to QDC module by downloading FCC, SCC, and TCC.
Important: If downloading from your programming terminal, download
FCC, SCC, TCC, and CPC in that order with download bits B21/2, 3, 4,
and 6 respectively (chapter 4).