User Manual

Span Your Valves
Chapter 9
9-24
Span your flow valve for optimum velocity performance in three parts:
Confirm critical values
Span your injection flow valve
Test valve linearity with a velocity vs. position profile
Important: You may omit the rest of this section if you have the right
information on valve spanning. Many injection molding machine OEMs
and hydraulic valve manufacturers provide data on spanning the working
range of valves used on their machines. If this information is available
from your OEM for your machine’s injection flow valve, enter the values
into velocity control limits INC45-48 and proceed to Span Your Pack and
Hold Pressure Valves.
Confirm Critical Values
Confirm that all entries you made for configuration values (chapter 7) and
profile values (chapter 8) are correct for the velocity vs. position profile.
Important: Use the following configuration and profile values:
On Worksheet Confirm Your Configuration With These Words or Bits ProSet Addr.
7E, 7G QDC module output to which you connected
your flow control valve
INC02B02, B01, B00
your selection
B38/16, 17, 18
Setoutput values for outputs to unselected
valves
INC0912 = your values N44:5, 6, 7, 8
All ramping is disabled with zero ramp rates INC1720 = 0
INC2528 = 0
N44:1316
N44:2124
Velocity limits:
Minimum Velocity Control Limit
Maximum Velocity Control Limit
Selected Velocity Valve, Output for Min
Selected Velocity Valve, Output for Max
INC45 = 0
INC46 = max velocity per valve specs
INC47 = your value
INC48 = your value
N44:41
N44:42
N44:43
N44:44
Endofprofile setoutput values HDC3336 for zero output N44:209212
8B, 8C Velocity units are inches (mm)/sec IPC03B14 = 1 B38/110
Openloop control IPC04B03 = B02 = B01 = B00 = 1 B38/112115
Expert Response Compensation (ERC) = Off IPC04B11 = B10 = B09 = B08 = 1 B38/120123
Velocity setpoints IPC09,13,17,21,25,29,33,37,41,45,49
all equal to max velocity per valve specs
start @ N44:65
end @
N44:105
Endof segment position setpoints IPC11, 15, 19, 23, 27, 31, 35, 39, 43, 47,
equal segments over length of travel
start @ N44:67
end @
N44:103
Logical bridge to stop and set outputs HPC03B08 = 1 B38/296
Span Y our Injection
V
elocity V alve