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

Page 163

Load Initial Profile Setpoints

Chapter 8

8-46

EndĆofĆsegment Position Setpoints

(EPC11, 14, 23, 29, 35, 38)
Use these words to configure pressure vs. position or velocity vs. position
ejector profiles. Record positions in inches or millimeters. Measure each
position setpoint from the ejector minimum software travel limit.

We recorded zero for EPC11, 14, 23, 29, 35, and 38 end-of-segment
position setpoints on Worksheet 8-F.

The valve spanning procedures in chapter 9 require these initial values for
velocity, pressure, and end-of-segment setpoints. We help you select
correct final values for your application in chapter 10. For additional
information, refer to the Plastic Molding Module Reference Manual
(publication 1771-6.5.88)

Ejector Forward Dwell Timer Preset

(EPC57)
The QDC module starts an internal ejector forward dwell timer dependent
of EPC03-B15 (dwell on initial or final stroke).

We recorded zero for the forward dwell preset on Worksheet 8-F.

The valve spanning procedures in chapter 9 require this initial value. For
additional information to help you select a correct final value, refer to the
Plastic Molding Module Reference Manual (publication 1771-6.5.88).

Ejector Fully Advanced Position Setpoint

(EPC59)
This setpoint defines the ejector position when fully extended. The QDC
module uses this position as the end-of-full-advance position setpoint. If
reached while the QDC module is executing a full advance ejector stroke,
the QDC module immediately terminates the advance stroke and checks
EPC03-B12 (continue or stop/notify) to determine its next action.

To determine this position setpoint, we recommend that you jog the ejector
to its fully advanced position and observe the value in SYS28 (N40:180).
Record this initial value for EPC59.