Baumer BA OADM20x24 - Handbuch (Seite 30)

BA_OADM20x24.doc 30/39 Baumer
05.12.12 Frauenfeld, Switzerland
5 Teaching the OADM
Every sensor is delivered with the factory setup (max. measuring range). The teach-in feature was designed
to choose a smaller range within the nominal measuring range for optimizing the resolution and linearity.
Output current, voltage and alarm output adapt to the new range. Two positions must be taught.
•
The first teach-in position aligns with 0 V (or 4 mA), the second position aligns with 10 V (or 20 mA)
•
These teach-in positions are always just at the border of the new range (inside the measuring range)
•
The sensor may be taught more than 10,000 times in its lifetime
•
The sensor can always be reset to the factory settings
•
The sensor may be taught with the teach button or via the external teach input
•
During the teach-in process, the red LED provides a feedback
•
The red LED on the back side of the sensor indicates “run” mode if an object is within the measuring
range.
Attention:
Within 5 minutes after power on, the sensor can be taught via the button or the teach-in wire. After 5 minutes,
the teach-in button will be locked preventing accidental adjustment. The teach-in wire is active all the time.
Example of a taught measuring range:
Example of a reverse taught measuring range:
30 mm 130 mm
0V / 4mA
Analog out
10V / 20 mA
Example
of a
taught
output
curve
LED
Standard output
curve
30 mm 130 mm
0V / 4mA
Analog out
10V / 20mA
Example of
a reversed
output
curve
LED
Standard output
curve