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

Page 165

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Span Your Valves

Chapter 9

9-8

5.

Enable set-output by transitioning DYC01-B08 (B34/392) to 1.

6.

Change the set-output word DYC09-12 (N40:121-124) corresponding
to your clamp tonnage (lock-up) pressure valve in 5% increments
while observing clamp pressure (SYS28, N40:180). Stop changing it
when the observed clamp pressure equals the desired tonnage
pressure. If you cannot reach the desired pressure, verify that the
other three set-output values are correct.

7.

Copy the resultant set-output values from DYC09-12 (N40:121-124)
into LPC33-36 (N43:209-212). The QDC module will apply these
values to the valves when the clamp completes low pressure close.

8.

Disable set-output by transitioning DYC01-B08 (B34/392) to 0.

9.

Enter the desired tonnage pressure for your machine (step 6) into the
tonnage complete pressure setpoint CPC63 (N43:299).

10.

Download your changes in LPC and CPC to the QDC module.

Important: If downloading from your programming terminal, download
LPC followed by CPC with download bits B21/5 and 6 (chapter 4).

Set the Profile Pressure Alarm

Set your clamp LPC maximum pressure alarm LPC57 (N43:233) to a
pressure that should:

not be exceeded during the clamp close profile
not exceed the maximum pressure control limit LPC42 (N43:218)

Entering a value of zero disables this alarm.

Download the alarm setpoint to the QDC by downloading the LPC and
CPC blocks.

Important: If downloading from your programming terminal, download
LPC followed by CPC with download bits B21/5 and 6 (chapter 4).

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