Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 106)

Load Initial Configuration Values
Chapter 7
7-20
Selected Valve for Pressure Control
(FCC02, SCC02, TCC02, LPC02, INC02, PKC02, HDC02, PLC02, FOC02, SOC02,
TOC02, OSC02, EAC02, ERC02)
Important: We define system pressure for the Inject, Clamp, and Eject mode
as the pressure continuously detected by the single pressure sensor connected
to the QDC module at input 2. Depending on machine hydraulics, a single
pressure valve may control inject, clamp, and/or eject mode profiles.
ATTENTION: Your control system may not work as expected
with possibly machine damage if you attempt to control a
pressure profile of a phase (inject, clamp, or eject) not
hydraulically plumbed for pressure control.
Because system pressure may change between the inject, clamp, and eject
phases, we recommend that you:
assign pressure control to phases that require pressure profiles
(and are hydraulically plumbed to support it)
place the system pressure sensor accordingly in the hydraulic circuit
configure the remaining phases with velocity profiles
The QDC module can control ram (screw), clamp, and ejector movement
using pressure vs. position (or time) 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
Record the appropriate bit selections for your valve configurations in the
control word of applicable worksheets.