Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 204)

Span Your Valves
Chapter 9
9-38
Before proceeding, observe these warnings:
ATTENTION: As with any machine start-up, install a test
mold. Programming errors, configuration errors, or hydraulic
problems could lead to personal injury and/or machine damage.
ATTENTION: Be sure all machine guards and shields are in
place before proceeding to guard against personal injury.
ATTENTION: Load the hopper with plastic before starting this
procedure. Absence of plastic during plastication:
nullifies this procedure
may cause excessive wear to the barrel and ram (screw)
Span Your Plastication Backpressure Valve
Span your plastication valve for smooth operation at the highest desired
backpressure. Do this by finding the optimum values for these words:
Minimum Pressure Control Limit PLC41 (N44:397)
Maximum Pressure Control Limit PLC42 (N44:398)
Selected Pressure Valve, Output for Minimum PLC43 (N44:399)
Selected Pressure Valve, Output for Maximum PLC44 (N44:400)
Important: If PanelView is operational for injection profiles, use it to:
observe actuals
change and download setpoints
run profiles
Important: We suggest that you read this procedure before starting.
1. Jog your ram (screw) to the mold-end position.
2. Set machine hydraulics to simulate ram (screw) backpressure:
enable pumps and align valves to normal state during plastication.
Important: Move injection carriage up to mold block to build pressure.