Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 110)

Load Initial Configuration Values
Chapter 7
7-34
Selected Pressure Valve Output for Minimum
(FCC43, SCC43, TCC43, LPC43, FOC43, SOC43, TOC43, OSC43, EAC43, ERC43)
This word operates in conjunction with the minimum pressure control limit
(word 41). Enter in this word the signal output percentage that the QDC
module uses to drive the selected pressure valve to minimum pressure
during any pressure vs. position profile or stroke. The QDC module
expects a pressure equal to word 41 when setting the selected pressure
valve to this percentage output.
If your selected
pressure valve is:
Then the value in word 43
should be:
And during the profile or stroke,
the QDC module does not drive
the valve with a % output:
Direct Acting less than the value in word 44 less than word 43
Reverse Acting greater than the value in word 44 greater than word 43
Reference the above table and enter one of the following for each Selected
Pressure Valve Minimum Output:
0 (0%) for uni-directional direct acting valves
5000 (50%) for bi-directional valves
9999 (100%) for uni-directional reverse acting valves
The valve spanning procedures presented in chapter 9 required these initial
values in order to assist you in selecting the correct, final values required
by your application. Refer to Section 3 of the Plastic Molding Module
Reference manual (pub. no. 1771-6.5.88) for more information.
Selected Pressure Valve Output for Maximum
(FCC44, SCC44, TCC44, LPC44, FOC44, SOC44, TOC44, OSC44, EAC44, ERC44)
This word operates in conjunction with the maximum pressure control
limit (word 42). Enter in this word the signal output percentage that the
QDC module uses to drive the selected pressure valve to maximum
pressure during any pressure vs. position profile or stroke. The QDC
module expects a pressure equal to word 42 when setting the selected
pressure valve to this percentage output.
If your selected
pressure valve is:
Then the value in word 44
should be:
And during the profile or stroke,
the QDC module does not drive
the valve with a % output:
Direct Acting greater than the value in word 43 greater than word 44
Reverse Acting less than the value in word 43 less than word 44