Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 170)

Span Your Valves
Chapter 9
9-4
We recommend that you first span for optimum performance your low
pressure valve used for the LPC profile. You do this in five parts:
Confirm critical values
Span your low pressure valve
Test value linearity with a LPC profile
Set up tonnage (hydraulic clamp) or hold pressure (toggle clamp)
Set the profile pressure alarm
Important: You may omit the procedure Span your low pressure valve in
this section if the recorded valve spanning data from the manufacturer for
pressure control limits LPC41-44 (chapter 7) are adequate for your
application.
Confirm Critical Values
Important: Confirm that your configuration values (chapter 7) and profile
values (chapter 8) for the low pressure close profile are as follows:
On Worksheet: Confirm Your Configuration: With These Words or Bits: ProĆSet Addr.
7ĆD QDC module output to which you connected your
selected pressure control valve
LPC02ĆB06, B05, B04
your selection
B37/214, 213, 212
Your unselected setĆoutput values for outputs 1Ć4 LPC09ĆLPC12 = your values N43:185Ć188
All ramping is disabled with zero ramp rates LPC17ĆLPC20 = 0
LPC25ĆLPC28 = 0
N43:193Ć196
N43:201Ć204
Pressure limits:
Minimum Control Limit
Maximum Control Limit
Selected Pressure Valve, Output for Minimum
Selected Pressure Valve, Output for Maximum
LPC41 = 0
LPC42 = your value
LPC43 = your value
LPC44 = your value
N43:217
N41:218
N41:219
N41:220
8ĆA Start LPC at overrun zone CPC03ĆB11 = 0 B37/299
Expert Response Compensation (ERC) is disabled CPC04ĆB15 = 1 B37/319
OpenĆloop control CPC04ĆB07 = 1 B37/311
Pressure setpoint CPC37 = your value N43:273
Start LPC position CPC61 = your value N43:297
Mold safe position CPC62 = your value N43:298
If these are not your current values, we suggest that you correct them now
using the download procedure discussed in chapter 4.
LPC Profile -
Low Pressure Valve