1 Application[edit | edit source]
Installed at the feeding rollers of a grinder to detect if there is currently film inside the feeding chute.
If film is detected the speed up of the feeding rollers is enabled.
If no film is detected the grinder will stop after delay (i.e. the grinder is not in use).
UB2000 is a single head system (transmitter and receiver integrated, i.e. reflexion type sensor).
UB2000 will replace the ultrasonic sensor UBE1000 (one-way sensor, i.e. transmitter and receiver are separated).
UB2000 are installed at both short sides of the chute (UBE1000 were installed at long sides of chute)
This picture shows the positions of the old UB1000 sensors:
INSERT PICTURE FROM SITE: Positions for new UB2000
2 Parametrization[edit | edit source]
- two sensors UB2000 will cover the whole cross section of the chute (no „blind“ areas anymore using the former sensors UBE1000)
- sensitivity has to be adjusted on site
- „switch point mode“, normally open output is used:
File:Public:PFUB2000SwitchPtMode.png
- both sensors should be interconnected to work in „synchronisation mode“ to avoid mutual interference:
File:Public:PFUB2000ParSynch.png
- disconnect the sensor which is not be programmed (to avoid interference)
- connect the synchronization input of the sensor to be programmed to ground (0V)
- follow the instruction described in the manual („Switch Point Modes“, „Normally open (NO) output“)
- place a piece of thin film at the opposite side of the chute (the thinner the better, e.g. edge trim from slitter or film from a narrow slit roll (step 1 acc. manual)
Insert pictures from site
File:Public:Public PepperlTestbildMOM.png
File:Public:Public Pepperl+Fuchs UB2000 Ultrasonic Sensor Grinder Film Detection 1751376883799.png
- at wide feeding chutes it may happen that the distance from the sensor to the opposite side of the chute is too big so that the film will not be detect (typically at feeding chutes broader than 1500 mm).
If so, place the film closer to the sensor until it will be detected reliably (typical distance: 1200 …1500 mm). The area which will not be covered by the first sensor will be covered by the second sensor which is installed at the opposite side of the chute
- continue with step 2 to 6 acc. manual
- disconnect the sensor which was programmed just before and connect the second sensor
- connect the synchronization input of the second sensor to ground (0V)
- repeat programming steps 1 to 6 for the second sensor
- after both sensors are successfully programmed interconnect the synchronization inputs of both sensors
- finally test the reliability of the sensors by moving the piece of film along the whole width of the feeding chute. The sensors should detect the film in every position.
