VIDEOJET 8520 - How to detect a Measuring Object

3-20 Installation of Printhead and Ink Cartridge Rev AB
Videojet 8520 Operator Manual
Stability indicator (green)
When the sufficient light is received, the stability indicator LED glows.
Indicator
Indicator shows the current position of the sensitivity trimmer. One turn
of the trimmer changes the position of the indicator by one mark on the
indicator scale.
Sensitivity trimmer
Sensitivity varies according to the print material. Turning the trimmer in
clockwise direction increases the sensitivity. Turning the trimmer in
counterclockwise direction reduces the sensitivity. Adjust the sensitivity
every time you use a different print material.
FINE/TURBO selector switch
FINE switch is used for recognizing minimal differences or for exact
positioning. (Standard setting: reaction time is 250 microsecond.)
TURBO switch is used for recognizing an object across large distances or
an object with low reflection. (Reaction time is 500 microsecond.)
Output timer selector switch
Output Selector Switch
Note: You can verify the photoelectric cell operation information in Diagnostics
menu (see “Diagnostics” on page 8-16).
How to detect a Measuring Object
Do the following tasks to detect a measuring object:
1 Set the D.ON/L.ON selector switch to the L.ON position.
OFF.D: OFF delay, 40 ms
ON.D: ON delay, 40 ms
OFF: Delay switched off (standard setting)
D.ON: The setting for special applications. The print resolution at the
transition is from reflective to non-reflective.
L.ON: The print resolution at the transition is from non-reflective to
reflective (standard setting).