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Photoelectric Sensors
Red light diffuse reflective energetic BOS 50K-...-PI11-S4 with IO-Link
Settings
Teach button for programming (static)
Caution! Do not press using pointed or sharp-edged
objects.
Factory default setting: Maximum sensitivity.
1. Align sensor with object.
2. Hold button down for approx. 3 sec. until both LEDs
flash alternately.
3. Remove object from the beam. Leave fixed objects in
this position.
4. Hold button down for approx. 1 sec.:
–
As soon as the object has been removed:
The green LED begins to come on, the yellow LED
is off. The sensor has read the object and the
background is reliably ignored. The switching point
lies between the object and the background.
–
Fixed objects:
The green LED begins to come on, the yellow LED
begins to flash. The switching point is set so that it
lies behind the object with minimum hysteresis.
5. Verify correct reading of the switching points.
Teach button for programming (dynamic)
1. Align the sensor with the moving object you wish to
detect.
2. Hold the button down for approx. 3 sec. until both LEDs
flash together. Release the button.
3. Hold key down until at least 1 process cycle has been
completed in the light path.
4. Verify correct reading of the switching points.
Restoring the max. range setting
Repeat the setting procedure with no object and back-
ground in the beam path.
Setting the light-on/dark-on output function
Factory default setting: Light-on
1. Hold button down for approx. 13 sec. until only the
green LED flashes rapidly.
2. Release the button.
3. While the green LED is flashing the output function is
changed each time the button is depressed.
This is indicated by the yellow LED as follows:
Yellow LED on: Light-on
Yellow LED off: Dark-on
4. Save the setting: Refrain from pressing the button for at
least 10 sec.
www.balluff.com
Approach Curve
gray card 90%
gray card 18%
Object distance
Fig. 4: Approach curve depending on distance to the object
Function reserve
Object distance
Fig. 5: Function reserve depending on distance to the object
The function reserve is a unitless factor which indicates
how much more light reaches the receiver than is neces-
sary for function of the sensor. The larger the factor, the
more stable the sensor operates. For applications in dirty
surroundings a greater function reserve is needed than
under laboratory conditions. The maximum range of the
sensor should therefore not always be used.
Communication errors
Under very rare conditions, a significant asymmetry in the
line drivers of IO-Link Masters may cause IO-Link commu-
nication errors.
We recommend the use of Balluff IO-Link Masters.
gray card 90%
gray card 18%
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