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Measure
optoCONTROL 2600
6.8.5 Reduced Light Intensity
The brightness of the light source may decrease caused by aging or thermal effects.
Readjust the light intensity in case of a failure only.
The intensity is set correct with the factory setting.
Use the video signal, see menu Video, 1B00 to evaluate the light intensity. Without a
measurement object the video signal should be arranged within the marked area.
Check whether the intensity is reduced by
- pollution,
- incorrect adjustment of the light source and receiver (for free arrangement without
mounting rails).
Clean the windows or adjust the light source and the receiver again.
Similarly, avoid ambient light into the receiver, which can increase the video signal.
The following pictures show three possible states:
Video signal is ok
(delivery status)
Fixed threshold for edge detection
Video signal to low, cuts almost
the fixed edge detection threshold
Increase the light intensity
Video signal too high
Decrease light intensity
Fig. 54 Different states of the video signal
The following steps are recommended:
1
Exit the menu Video. Press the key ESC.
2 Press the arrow key (Down). The service menu (1C00) appears as the last
item in the Options menu.
3
Press the key twice (arrow key ) to adjust the light intensity (1C20)
menu.
4
Use the arrow keys to change the light intensity in percent, see menu 1C21.
Confirm with .
5 Then it is essential to control the video signal.
6
Repeat the adjustment several times until the video curve shows the desired
result.
7
Confirm and save your settings with .
8 If you confirm your settings with ESC, the light intensity is volatile and will be lost, if
you power down the system.
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