Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 212)

Span Your Valves
Chapter 9
9-46
If: And Your Selected
Valve is:
Then change FOC44
(N43:340) as follows:
OPS13 was less than OPC13 Direct Acting Increase in 5% steps
Reverse Acting Decrease in 5% steps
OPS13 was more than OPC13 Direct Acting Decrease in 5% steps
Reverse Acting Increase in 5% steps
To do this: change FOC44, download the FOC block, and repeat steps 1-3.
Do this as necessary.
Important: If downloading from your programming terminal, download
FOC followed by OPC with download bits B21/16 and 20 (chapter 4).
4. Copy final FOC44 (N43:340) into SOC44, TOC44 and OSC44
(N43:400, 460, and 520), and download these changes.
Important: If downloading from your programming terminal, download
FOC, SOC, TOC and/or OSC followed by OPC (chapter 4).
To download: Set B21/
FOC 16
SOC 17
TOC 18
OSC 19
OPC 20
What You Have Accomplished
The valve spanning procedure you just completed has defined the:
range of pressure available during any clamp open profile
end-of-range maximum and minimum signal levels for linear control of
the clamp open 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 FOC41,SOC41,TOC41,OSC41 FOC43, SOC43, TOC43, and OSC43
Maximum FOC42,SOC42,TOC42,OSC42 FOC44, SOC44, TOC44, and OSC44
Now, for all open-loop pressure profiles for clamp open, the QDC module
assumes a linear relationship between clamp pressure and signal output.