Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 228)

Span Your Valves
Chapter 9
9-62
What You Have Accomplished
The valve spanning procedure you just completed has defined the:
range of velocity available during any ejector profile
end-of-range minimum and maximum signal levels for linear control of
the ejector velocity valve in open-loop control.
For this
range limit
When trying to obtain
the velocity in:
The QDC module drives the selected
velocity valve to % output signal in:
Minimum EAC45, ERC45 EAC47, ERC47
Maximum EAC46, ERC46 EAC48, ERC48
Now for open-loop ejector profiles, the QDC module assumes a liner
relationship between ejector velocity and signal output.