Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE User Manual

Page 93

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Load Initial Configuration Values

Chapter 7

7-24

Maximum RPM Control Limit

(PLC46)

The value in this word corresponds to the maximum controllable RPM
during the plastication profile. The QDC module uses this word with the
Selected RPM Valve, Output for Maximum (word 48) below. The QDC
module expects this RPM when setting the selected RPM valve to the
percentage output you enter in word 48.

Record the maximum screw RPM per your OEM specifications on
Worksheet 7-D.

Selected RPM Valve, Output for Minimum

(PLC47)

The QDC module uses this word with the Minimum RPM Control Limit
(word 45) above. Enter the %-signal output that the QDC module uses to
drive the selected RPM valve for minimum profile RPM. The QDC
module expects an RPM equal to word 45 when setting the selected RPM
valve to this percentage output.

Determine Output for Minimum values as follows:

0 (0%) for uni-directional direct acting valves
5000 (50%) for bi-directional valves
9999 (100%) for uni-directional reverse acting valves

If your selected

pressure valve is:

Then the value in word 47

should be:

And during the profile, the QDC

module does NOT drive the valve

with a % output:

Direct Acting

less than the value in word 48

less than the value in word 47

Reverse Acting

greater than the value in word 48 greater than the value in word 47

Record your initial Output for Minimum value on worksheet 7-D.

Selected RPM Valve, Output for Maximum

(PLC48)

The QDC module uses this word with the Maximum RPM Control Limit
(word 48) above. Enter the %-signal output that the QDC module uses to
drive the selected RPM valve for maximum profile RPM. The QDC
expects an RPM equal to word 46 when setting the selected RPM valve to
this percentage output.

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