Appendix B - Tips
102
3A0294J
Appendix B - Tips
Calibration Procedure
Performing the calibration procedure is not necessary
for the system to work. However, performing the proce-
dure will increase shot accuracy depending on the
changeover characteristics of your supply system.
Each pump and material combination may have unique
changeover characteristics (volume pumped during the
changeover). Performing the calibration procedure will
calibrate your particular SmartWare kit to more accu-
rately count the material dispensed during the change-
over portion of the pump stroke.
Tips for Better Accuracy
•
Repeatable dispense components: Use a high qual-
ity and highly repeatability dispense valve and sole-
noid. Always use the greatest air pressure available
to actuate the dispense valve.
•
Faster valve: Use the smallest dispense valve that
will work for your flow rate and pressure. A small
dispense valve will open and close faster, which will
reduce overshoot; see , page 92, for overshoot val-
ues. Use a large enough solenoid and large enough
air lines to maximize the air flow, which will increase
the speed of the dispense valve.
•
Slower pump speeds: Decrease the pump speed to
decrease overshoot and increase accuracy.
•
If pumping higher viscosity materials with a DuraFlo
pump, install a spring loaded ball check at the pump
inlet. Doing so will provide more consistent pumping
through the top and bottom changeovers.
•
Use the smallest diameter and shortest length outlet
hose possible to minimize the amount of material
between the pump and the dispense point.
•
Minimize the material temperature swings to help
prevent changes in material properties that will
affect accuracy.
Содержание SmartWare 262370
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