Manual

4-8 Configuration and Characterization
4.5 Characterization
 NOTE A characterization must be performed for each tool and each coating material used or as
required to ensure quality and consistent dispensing.
Many variables, such as material type, temperature, viscosity, substrate type, robot velocities, and
dispenser response times affect the coating process. Characterization improves coating placement
accuracy and repeatability. The Characterization Wizard helps you adjust program values to compensate
for these variables. The characterization process consists of defining the following values:
• On/Off Response Times
• Coating Height
• Coating Speed (Velocity)
• Coating Width
NOTE All of these variables are interrelated. Make your selections based on the results you want
to achieve. Refer to the ECXP User Guide or Online Help or contact your Nordson
ASYMTEK representative for additional information.
The characterization automatically calculates dispensing ON and OFF times. Characterization
compensates for such variables as:
• Change in air pressure
• Fluid viscosity
• Coating applicator velocity
When you perform a characterization, the coating applicator will dispense three stripes of material. You
will then be prompted to select the best pass for both the start and end values. The values will be stored in
the robot controller. The coating applicator will then dispense three additional stripes of material. These
lines should correspond to the best pass previously selected. This is your characterization.