OGD25x OGD55x
Photoelectric distance sensor
6
3 Intended use
3.1 General notices
The device is used as a photoelectric distance sensor.
The device continuously detects the distance to the object and the reflectivity of the object and
generates output signals according to the parameter settings.
•
2 switching outputs are available. They can be set separately. Switch points can either be set or
taught.
•
The measured values are shown in a 7-segment display and transferred via IO-Link. Two
measured values are generated.
Measured distance value:
Distance from the front pane of the sensor to the target.
Object reflectivity:
Reflective quality of the object.
The reflective quality of an object is angle dependant, e.g. a white Kodak grey card has a reflective
quality of approx. 90% at perpendicular light incidence.
The device uses a laser diode as light source and creates a light spot. This makes it possible to
detect small objects.
The light spot should hit the object or the background. Intermediate states may lead to faulty
measured values.
In the following document, the switching signal channels 1 and 2 are replaced by an “x”.
Example: SP1 / SP2
Ò
SPx
3.2 Applications
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The photoelectric distance sensor measures distances from 30...2200 mm and object reflectivities
from 0...999 %.
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It has a background suppression of up to 20 m.
The distance between the sensor and the background must be limited to max. 20 m. Otherwise
measured values can be ambiguous.
