User guide
Preface
P-2
Before attempting to apply the QDC module to a molding machine we
assume that you are:
an injection molding professional
an experienced PLC programmer
(especially with the Allen-Bradley PLC-5 family of processors)
an hydraulics designer or technician
We use abbreviated catalog numbers when referring to Allen-Bradley
equipment:
Abbreviated Name: Title:
QDC module 1771QDC Plastic Molding Module
PLC5 processor PLC5 Programmable Controller
T45 or T47
T50 oe T53 terminal
1784T45 or 47 Portable Programming Terminal
1784T50 or 53 Industrial Terminal
ProSet 600 Software
6500PS600
ProSet 600 Injection Molding Operator Interface Software
PanelView Color display
2711KC1 PanelView Operator Interface Terminal
ERC Expert Response Compensation
The next table presents other terms we commonly use in this manual:
Term: Definition:
Selected Valve In multivalve systems, depending on the configured profile, the QDC
module controls one valve and presets the setting of the remaining
valves to produce moldingmachine profiles. We call the valve being
controlled by the QDC modules algorithms the selected valve.
Unselected Valves In multivalve systems, depending on the configured profile, the QDC
module controls one valve and presets the setting of the remaining
valves to produce moldingmachine profiles. We call the valves that are
preset with an openloop percentage setpoint the unselected valves.
Profile A group of mold/part setpoints which define a given machine operation
to the QDC module.
Command Block Data blocks downloaded from the PLC5 data table to the QDC module
to make configuration changes or to initiate machine actions.
Status Block Data blocks used by the QDC module to relay information to the PLC5
processor about the QDC module's current operating status.
Profile Block Command block containing mold/part setpoints.
Configuration Block Command block containing machine setpoints.
Direct Acting Valve An analog control valve that delivers increasing velocity or pressure with
increasing signal input.
Reverse Acting Valve An analog control valve that delivers increasing velocity or pressure with
decreasing signal input.
Audience
Use
of T
erms