Instruction Manual

Preface
P-2
In order to apply the QDC module to a molding machine, we assume that
you are an:
injection molding professional
experienced programmer with Allen-Bradley PLC-5 processors
hydraulics designer or technician
We use these abbreviations:
Abbreviated Name: Item
QDC module 1771QDC Plastic Molding Module
PLC processor
PLC5 Processor
T45 or T47
T50 or T53 terminal
1784T45 or T47
1784T50 or T53 Industrial Terminal
ProSet 600 Software
6500PS600
ProSet 600 Injection Molding Operator Interface Software
PanelView Terminal
2711KC1 PanelView Operator Interface Terminal
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 module's algorithms the selected valve.
Unselected Valves In multivalve systems, depending on the configured profile, the QDC
module controls one valve and presets 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 Blocks Data blocks downloaded from the PLC5 data table to the QDC
module to make configuration changes or to initiate machine actions.
Status Blocks 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