Ultrasonic direct detection sensor
UB250-F77-E2-V31
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Germany: +49 621 776 4411
Fuchs Group
Refer to “General Notes Relating to Fuchs Product Information”.
USA: +1 330 486 0001
Singapore: +65 6779 9091
www.pepperl-fuchs.com
Description of Sensor Function
The ultrasonic sensor transmits ultrasonic packets in quick succession and responds to their reflection off the detected object. The sensor has
a switch output. The switching point is progammable (Teach-In). Objects beyond the taught-in switching point are not detected (background
suppression).
Teach-In of Switching Point SP
To teach in a switching point, proceed as follows:
1. Connect the sensor and turn on the operating voltage.
2. Place the object to be detected at the required distance.
3. Connect the teach-in input (ET) to -U
B
. This can be done usingthepushbutton or the controller.
The LED will start flashing after 3 seconds to indicate that the sensor is ready to start the teach-in process
(*)
.
4. Disconnect the teach-in input (ET) with -U
B
. The switching point SP has now been taught in
(*)
.
(*)
If no object is detected within the sensing range of the sensor, the sensor will start flashing at a faster rate. The switching point remains
unchanged.
Switching characteristics and display LED
"
= Object position
Safety Note
The use of this device in applications, where the safety of persons depends from the devices function, is not allowed!
Accessories
UB-PROG4-V31
Programming unit for ultrasonic sensors with Teach-in input at pin 2
OMH-ML7-01
Mounting aid for ML7 and ML8 series, Mounting bracket
V31-GM-2M-PVC
Female cordset, M8, 4-pin, PVC cable
V31-WM-2M-PVC
Female cordset, M8, 4-pin, PVC cable
unusable
area
Sensing range
Output
LED
Adjustment range
"
-U
B
Off
"
+U
B
On
"
Undefined
