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

Page 175

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Span Your Valves

Chapter 9

9-18

Important: If downloading from your programming terminal, download
FCC, SCC, and/or TCC followed by CPC (chapter 4).

To download:

Set B21/

FCC

2

SCC

3

TCC

4

CPC

6

What You Have Accomplished

The valve spanning procedure you just completed has defined the:

range of velocity available during any clamp close profile

end-of-range maximum and minimum signal levels for linear control of

the clamp 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

FCC45, SCC45, TCC45

FCC47, SCC47, TCC47

Maximum

FCC46, SCC46, TCC46

FCC48, SCC48, TCC48

Now for all open-loop velocity profiles for clamp close, the QDC module
assumes a linear relationship between clamp velocity and signal output.

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