Roland udk20 Manual page 77

B0048991 / Rev. 1.3
6.3.4 External zero adjust (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".
IN0-2, 4-10
IN3
OUT3
OUT2
OUT1
Check whether the output OUT0 „Enable" has switched to HIGH (ready for operation), otherwise there is a fault

condition.
Before initiating zero adjust all inputs must be LOW for 30 ms. No sheet must be in front of the sensor.

Switch the input IN3 „Zero adjust" to HIGH.

Within 30 ms the outputs OUT1-3 have switched to LOW.

After point  or 30 ms after point  switch the input IN3 „Zero adjust" to LOW.

Now the unit performs a zero adjust. The zero adjust is completed within 15s and the outputs OUT1-3 switch to

HIGH.
Example:
Check whether the output OUT0 „Enable" has switched to HIGH.

No sheet must be in front of the sensor. All inputs must be LOW for more than 30 ms.

Now switch input IN3 to HIGH.

After 30 ms check whether outputs 1-3 have switched to LOW.

Now switch input IN3 to LOW.

After >15 seconds check whether the outputs 1-3 have switched to HIGH.

ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
Double Sheet Detector R1000 series UDK20
Note During Zero adjust no sheet must be in front of the sensor.
Enable
Zero adjust
0-sheet
1-sheet
2-sheet
1
> 30ms
2
Manual
< 30ms
4
> 30ms
5
1 sensor: 8 s; 2 sensors 15 s
3
Communication with the PLC
6
77