Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE User Manual

Page 127

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Load Initial Profile Values

Chapter 8

8-6

Velocity Setpoints

(CPC09, 12, 15, 18, 21, 24, 27, 30, 33)
Use these words to configure velocity vs. position profiles. Enter velocity
in units per second. Each velocity setpoint controls the velocity of its
corresponding segment.

Select setpoints for first clamp close segments 1-3 that are typical of
velocities you would run during normal machine operation.

Enter these setpoints into CPC09, 12, and 15 of Worksheet 8-A.
We entered zero for the remaining velocity setpoints.

Pressure Setpoints

(CPC10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40)
Use these words to configure pressure vs. position profiles. Enter pressure
in PSI or Bar. Each pressure setpoint controls the pressure of its
corresponding segment.

For CPC10, 13 and 16 (first clamp close), enter pressure setpoints typical
of machine operation.

For CPC37 (low pressure close), enter a pressure setpoint typical of
machine operation.

We entered zero for the remaining pressure setpoints in Worksheet 8-A.

The valve spanning procedures in chapter 9 require these initial values.
We help you select the correct final values required by your application in
chapter 10. For additional information, refer to Section 3 of the Plastic
Molding Module Reference Manual (publication 1771-6.5.88)

Mold Safe Position Setpoint

(CPC62)
This setpoint defines the clamp position when the mold halves mate. The
QDC module uses it as the end of low pressure close setpoint. If the clamp
reaches this position during the low pressure close profile, the QDC
module immediately terminates the profile and sets its outputs to
LPC33-36.

To determine CPC62, we recommend you jog your clamp closed until the
two mold halves mate and observe the value in SYS27 (N40:179).

Enter this value for CPC62 on Worksheet 8-A.

Determine Word Values for

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