Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE - Manual (Page 44)

Configure the QDC Module's I/O
Chapter 3
3-13
You may now download your adjusted values to the QDC module using
the MCC download procedure presented earlier in this chapter.
Determine Values for the Cavity Pressure Sensor (if used)
To complete the configuration for your cavity pressure sensor, enter in
Worksheet 4-E minimum and maximum pressures and corresponding
signal levels from manufacturer’s specifications in MCC57-60. Most
applications require no further spanning.
Determine Values for the Screw RPM Sensor
To complete the configuration for your screw RPM sensor, enter in
Worksheet 4-E on lines 9-12 (MCC51-54) minimum and maximum RPM
and corresponding signal levels from manufacturer’s specifications. Most
applications require no further spanning.
If your application requires greater accuracy, follow the this procedure:
1. Confirm that the screw is at rest (not rotating).
2. Record 0000 as the minimum RPM on line 9 for MCC51 of
Worksheet 4-E.
3. With your programming terminal, read signal level returned in
SYS35 (N40:187) from your RPM sensor. You may wish to zero
your RPM sensor at this time.
4. Record this signal level on line 11 for MCC53.
ATTENTION: Be sure that any residual plastic in your barrel
is hot enough to be liquified before proceeding to step 5.
Attempting to rotate the screw at maximum RPM with cool
plastic in the barrel could damage your barrel/screw set.
5. Allow full hydraulic flow to your screw motor at rated hydraulic
pressure to obtain maximum RPM.
6. Determine the actual RPM using a calibrated, hand-held touch
tachometer (or similar device).
7. Record the observed maximum RPM on line 10 for MCC52.