UV-9+Cure+Module+7269348_B+Manual.pdf - 第109页
7. Perform a UV measurement and enter the UVA results; intensity ( mW/cm²) and dose (mJ/c m²) in the High Power Value and UVA fields . Calibrati on at 100% power i s now comple te . 8. Set Man Pow er to 5 0% ( Figure 6…
6.5.5 Closed Loop Calibration Procedure
NOTE You must have Maintenance Access level to perform this procedure.
Tools and Materials Needed:
• Power Puck or other UV Measuring Device (Radiometer)
NOTE Perform all measurements with a cold UV measuring device; ideally the temperature
should be under 25 °C. UV measuring devices are sensitive to humidity, therefore it is
recommended that you store and use within a constant humidity range.
The accuracy of a Power Puck is + /- 10% , typically + /- 5%.
To perform the closed loop calibration:
1. Select
Top Lamp > Parameters > Manu to put the oven in manual mode.
2. Click on
Calibration (Figure 6-17).
Figure 6-17 Closed Loop Parameters Screen – High Power
3. Enter the conveyor speed.
The speed entered in this screen is used only for calibration and calculation; it does not
set the actual conveyor speed.
4. Set
Man Power to 100% (this control box is an active control box; it sets the value).
In case of a cold start, allow the oven to warm-up for 15 minutes before calibrating.
5. Copy the Sensor read value in the Sensor Calibration High Power field.
The UV sensor resolution varies per machine as they are individually validated. The
read value in terms of points represents the analog input value at the PLC.
6. Position the UV puck on a flat carrier or surface and point the puck sensor toward the lamp
top or bottom.
Make sure the puck is at the same height as the substrate to get an accurate UV
measurement.
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2
4
5
5
7
6-14 Maintenance
7. Perform a UV measurement and enter the UVA results; intensity (mW/cm²) and dose
(mJ/cm²) in the High Power Value and UVA fields.
Calibration at 100% power is now complete.
8. Set
Man Power to 50% (Figure 6-18).
This control box is an active control box; it sets the value.
Wait 15 minutes for temperature stabilization before calibrating.
9. Copy the Sensor read value in the Sensor Calibration Low Power input textbox.
The UV sensor resolution varies per machine as they are individually validated. The
read value in terms of points represents the analog input value at the PLC.
Figure 6-18 Closed Loop Parameters Screen – Low Power
10. Position the UV puck on a flat carrier or surface and point the puck sensor toward the lamp
top or bottom.
Make sure the puck is at the same height as the substrate to get an accurate UV
measurement.
11. Perform a UV measurement and enter the UVA results; intensity (mW/cm²) and dose
(mJ/cm²) in the Low Power field.
Calibration at 50% power is now complete.
12. Set the
Dev (deviation or tolerance) on the UV sensor reading. The standard value is
100 mJ, which means that the UV-9 is giving the UV process free as soon 100 mJ
variation is measured from the set point.
13. When finished, click on
again to activate the SMEMA signals (the background
should be gray instead of yellow).
14. Use the UV puck to validate the calibration by comparing the measured dose and intensity
values with the UV-9 values on the Top/Bottom Lamp Parameters screen.
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9
11
Maintenance 6-15
6-16 Maintenance
6.6 UV Module Quartz Glass Replacement
6.6.1 Upper UV Module (UV-9 Version 1 Only)
To replace the UV module quartz glass:
1. Check that the Main Power Switch is in the ON position and locked.
2. Disconnect the power plug located at the rear of the UV assembly.
3. Turn the front key.
4. Pull out and remove the UV assembly.
5. Remove the terminal cover by pressing on the 2 tabs towards the center (Figure 6-19).
Figure 6-19 Terminal Cover Tabs
6. Slide the quartz glasses through the supports.
7. Reinstall the terminal cover. Take care that the vertical fold is on the quartz glass side
(Figure 6-20).
Figure 6-20 Terminal Cover Vertical Fold