Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 197)

Span Your Valves
Chapter 9
9-31
We recommend that you span your pack and hold pressure valves for
optimum pressure performance in four parts:
Confirm critical values
Span your pack and hold pressure valves
Test valve linearity with a pressure vs. time profile
Set profile pressure alarms
Important: You may omit the procedure Span your pack and hold pressure
valves in this section if the recorded valve spanning data from the manu-
facturer in pressure control limits PKC41-44 and HDC41-44 (chapter 7) are
adequate for your application.
Important: If your machine hydraulics for pack and hold are identical to
those for injection, you may use your injection pressure valve spanning
parameters for pack and hold. If so, enter your values for INC41-44 into
PKC41-44 and into HDC41-44, and skip to Set Profile Pressure Alarms.
Confirm Critical Values
Important: Confirm that all entries you made for configuration values
(chapter 7) and profile values (chapter 8) are as follows:
On
Worksheet
Confirm Your Configuration With These Words or Bits
for Pack Pressure
ProĆSet Addr
7ĆF QDC module output to which you connected your
pressure control valve
PKC02ĆB06, B05, B04 B38/148Ć150
SetĆoutput values for unselected valves PKC09Ć12 = your values N44:125Ć128
All ramping is disabled with zero ramp rates PKC17Ć20 = 0
PKC25Ć28 = 0
N44:133Ć136
N44:141Ć144
Pressure limits:
Minimum Pressure Control Limit
Maximum Pressure Control Limit
Selected Pressure Valve, Output for Minimum
Selected Pressure Valve, Output for Maximum
PKC41 = 0
PKC42 = system pressure
PKC43 = your value
PKC44 = your value
N44:157
N44:158
N44:159
N44:160
7ĆG QDC module output to which you connected your
pressure control valve
HDC02ĆB06, B05, B04 B38/212Ć214
SetĆoutput values for unselected valves HDC09Ć12 = your values N44:185Ć188
All ramping is disabled with zero ramp rates HDC17Ć20 = 0
HDC25Ć28 = 0
N44:193Ć196
N44:201Ć204
EndĆofĆprofile setĆoutput values HDC33Ć36 for zero output N44:209Ć212
Pressure limits:
Minimum Pressure Control Limit
Maximum Pressure Control Limit
Selected Pressure Valve, Output for Min
Selected Pressure Valve, Output for Max
HDC41 = 0
HDC42 = system pressure
HDC43 = your value
HDC44 = your value
N44:217
N44:218
N44:219
N44:220
PKC and HDC Profiles -
Pressure Valves