Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 201)

Span Your Valves
Chapter 9
9-35
12. Download your final values for PKC41-44 and HDC41-44 to the
QDC module by downloading the PKC block.
Important: If downloading from your programming terminal, download
PKC and HDC, followed by HPC (chapter 4).
To download Set B21/
PKC 9
HDC 10
HPC 11
Test Valve Linearity with a Pressure vs. Time Profile
After you span the pressure valve for ram (screw) pack and hold, test
linearity for pack and hold profiles with this procedure:
1. Confirm that pressure setpoints equal full injection pressure:
for pack: HPC10, 13, 16, 19, 22 (N44:246, 249, 252, 255, 258)
for hold: HPC27, 30, 33, 36, 39 (N44:263, 266, 269, 272, 275)
If not, correct them and download them to the QDC module. For
instructions, refer to chapter 4.
2. Check that the ram (screw) is still at the mold-end position.
3. Run the pressure vs. time pack profile by toggling DYC02-B05
(B34/405) from 0 to 1 to 0. The ram (screw) remains fixed so it can
exert pressure against the nozzle tip. If no pressure, verify that:
- no ram (screw) overtravel alarms are set. The QDC module
inhibits injection profiles if alarm bits SYS07-B00 through
SYS07-B05 are set.
- no programming error codes exist in SYS61 and SYS62.
4. The QDC module automatically runs pack and hold profiles in
succession. At completion, observe the pressures reported for the
middle segment pressure in HPS16 (N44:664) for pack and HPS33
(N44:681) for hold.
5. If observed pressures are not within 20% of entered setpoints, check
that valve and solenoid alignment for the profile is the same as for
set-output (previous procedure). If not, correct. Repeat steps 3 and 4.