OV-II Maintenance, Troubleshooting and Service Manual
2-12
Industrial Dynamics Company, Ltd. ©
Form 42600 (10/03)
4. Verify the inspection zones are concentric with the bottle bottom
image. If they are not, go to the
CONTROL >
BASE
screen and
adjust the horizontal and vertical settings as required.
5. Check the
Current Detects
column to see if any of the inspection
zone is detecting more often than other zones.
6. Use the button with the bottle (under the image) to "freeze" the
rejected bottles and examine their images.
7. Observe that the frozen reject bottle image has small red dots marking
the places where it located the objects. These dots are called
detection
points
.
8. Observe the
DETECT
function. This is normally adjusted to a value
between 100 and 200. The higher the number, the more sensitive the
inspection zone will become. The highest possible value is 999 and
lowest is 1.
9. Observe the Detect Sensitivity and the
LAST DETECT
functions.
They indicate the relative strength of the detected object in terms of
the number of detection points. It goes up as the size and/or the
darkness of the object increases. When the
SENSITIVITY
is too
high, then the
CURRENT DETECTS
will be greater than zero even
for bottles which have no real object.
10. If a bottle is falsely rejected and the
LAST DET
is between 1 and
approximately 30, then the
SENSITIVITY
should be lowered by 25
points. Clear the counters using the
RESET BASE COUNTERS
function, then allow about 1,000 bottles to pass through the system.
