A-100
Standard Photoelectric Sensors
Precautions
Mounting Directions
Sensor assembly
Contrary to sensors with single triangulation, E3NT with dou-
ble triangulation, allows the measured object's direction of
motion to be in all three directions. Thus, the rotatory position
of the sensor about its optical axis can be chosen freely.
If the light spot is not completely on the same plane as the tar-
get object (minimum object size) the distance is not deter-
mined and malfunction can occur. If necessary a trigger signal
or timer function has to be applied.
The sensor must be fitted so that:
• It is correctly aligned before it is adjusted
• It is protected as far as possible against vibration and shock
• It is protected as far as possible against extraneous incident
light
• It is protected as far as possible against damage and soiling
• Electrical connection is possible
• It is as accessible as far as possible for maintenance work
• Operation of the push buttons is possible
• The display is visible.
Sensor's assembly direction
As far as possible, the sensor's optical surface should be
aligned parallel to the surface of the measured object.
If the measured object has a glossy, reflecting surface, the
sensor's optical system should be tilted by 5 … 10° in relation
to the surface of the measured object.
If there is a reflecting surface in parallel with the sensor's op-
tical axis, this might lead to unstable switching states.
Therefore, reflecting objects within the sensor's optical axis
should be avoided.
If this should not be possible, the reflecting surface should not
be parallel to the sensor's optical axis, but should be rotated
by at least 10°.
Mirror-like objects can cause malfunction inside and outside
the sensing range. Avoid mirror-like objects in or close to the
optical axis.
Inspection and Maintenance
Cleaning
Do not use any scratching or abrasive cleaning materials. The
protective pane of the optical system might get damaged.
The sensor requires no maintenance.
Remove dirt build up from the optical system and the display
at regular intervals only with a soft, non abrasive fabric. Re-
sidual dirt may have influence on the switching point and dis-
play accuracy.
90˚
90˚
detection object
90˚
5 … 10˚
˚
detection object
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No.
E332-E2-02
-X
F502-EN2-04.book Seite 100 Dienstag, 26. Juli 2005 5:48 17
