User Manual

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 these abbreviations:
Abbreviated Name: Title:
QDC module 1771QDC Plastic Molding Module
PLC5 processor PLC5 Programmable Controller
T47 or T50 terminal 1784T47 or 1784T50 Programming Terminal
ProSet 600 Software
6500PS600 ProSet 600 Injection Molding Operator Interface Software
PanelView Terminal
2711KC1 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 multivalve systems, depending on the configured profile, the QDC
module controls one valve and presets the setting of the remaining
valves to produce moldingmachine profiles. We call the valve being
controlled by the QDC modules algorithms the selected valve.
Unselected Valves In multivalve systems, depending on the configured profile, the QDC
module controls one valve and presets the setting of the remaining
valves to produce moldingmachine profiles. We call the valves that are
preset with an openloop 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 PLC5 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 PLC5
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