Manual
Double Sheet Detector R1000 series UDK20
Communication with the PLC
B0048991 / Rev. 1.3
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6.3.5 External Teach-In (via PLC inputs)
This function may be required for special applications. It is, however, switched off in the standard
factory adjustment. If required it can be activated according chapter “7. Start-up“.
Note
During Teach-In one sheet of nominal thickness must be placed in front of
the sensor.
Note
A zero adjust procedure must be executed immediately before the
Teach-In procedure.
Enable
1
> 30ms
2
OUT3
OUT2
Teach-In
3
4
< 30ms
5
> 30ms
OUT1
6
< 7 sec.
0-sheet
1-sheet
2-sheet
IN0-1, 3-8
IN2
Check whether the output OUT0 „Enable“ has switched to HIGH (ready for operation), otherwise there is a fault
condition.
Before initiating the Teach-In, all inputs must be LOW for 30 ms. One sheet of nominal thickness must be placed in
front of the sensor.
Switch the input IN2 „Teach-In“ to HIGH.
Within 30 ms the outputs OUT1-3 have switched to LOW.
After point
or 30 ms after point
switch the input IN2 „Teach-In“ to LOW.
Now the unit performs a „Teach-In“ procedure, which is completed within 7s. Then the outputs OUT1-3 switch to
HIGH.
Example:
Check whether the output OUT0 „Enable“ has switched to HIGH.
One sheet must be in front of the sensor. All inputs must be LOW for more than 30 ms.
Switch input IN2 to HIGH.
After 30 ms check whether outputs 1-3 have switched to LOW.
Switch input IN2 „Teach-In“ to LOW.
After < 7 seconds check whether the outputs OUT1-3 have switched to HIGH.
