Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 110)

Load Initial Configuration Values
Chapter 7
7-29
Selected Valve for Pressure Control
(FCC02, SCC02, TCC02, LPC02, INC02, PKC02, HDC02, PLC02, FOC02, SOC02,
TOC02, OSC02)
The QDC module can control ram (screw) and clamp movement using
pressure vs. position (or time vs. ram) algorithms. For the plastication
algorithm, the pressure component is backpressure. You must inform the
QDC module which valve to use for controlling pressure with these
algorithms.
B06 B05 B04 Selects:
0 0 0 Output #1 Used for Pressure Control
0 0 1 Output #2 Used for Pressure Control
0 1 0 Output #3 Used for Pressure Control
0 1 1 Output #4 Used for Pressure Control
Enter the appropriate bit selections for your valve configurations in the
control word of applicable worksheets.
Type of PID Pressure Algorithm
(FCC02, SCC02, TCC02, LPC02, INC02, PKC02, HDC02, PLC02, FOC02, SOC02,
TOC02, OSC02)
When executing pressure versus position or time profiles, the QDC module
can use one of two types of PID algorithms: dependent gains (ISA) or
independent gains (Allen-Bradley).
If B07 = : Then it uses:
0 Dependent Gains (ISA)
1 Independent Gains (AĆB)
Dependent gains (ISA):
Output = Kc[(E) + 1/Ti
o
∫ t (E)dt + Td*d(E)/dt]
Independent gains (AB):
Output = Kp(E) + Ki
o
∫ t (E)dt + Kd*d(E)/dt
Select the Type of
PID Algorithm