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R O L A N D
Rev. 1.0
6.1.4 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".
Note: During Zero adjust no sheet must be in front of the sensor.
Enable
OUT 0
IN 0-2,4-8
Zero adjust
IN 3
0-Sheet
OUT 3
1-Sheet
OUT 2
2-Sheet
OUT 1
Check whether the output OUT0 „Enable" has switched to HIGH (ready for operation),
1
otherwise there is a fault condition.
Before initiating zero adjust all inputs must be LOW for 30 milliseconds. No sheet must be in front
2
of the sensor.
Switch the input IN3 „Zero adjust" to HIGH.
3
Within 30 milliseconds the outputs OUT1-3 have switched to LOW.
4
After point 4 or 30 milliseconds after point 3 switch the input IN3 „Zero adjust" to LOW.
5
Now the unit performs a zero adjust. The zero adjust is completed within 15s and the outputs OUT1-3
6
switch to HIGH.
Example:
Check whether the output OUT0 „Enable" has switched to HIGH.
1
No sheet must be in front of the sensor. All inputs must be LOW for more than 30 milliseconds.
2
Now switch input IN3 to HIGH.
3
After 30 milliseconds check whether outputs 1-3 have switched to LOW.
4
Now switch input IN3 to LOW.
5
After >15 seconds check whether the outputs 1-3 have switched to HIGH.
6
ROLAND ELECTRONIC GMBH · Otto-Maurer-Str. 17 · D-75210 Keltern · Telefon (0049) (07236) 9392-0 · Telefax (0049) (07236) 9392-33
OPERATING INSTRUCTIONS
DOUBLE SHEET DETECTOR R1000 UDK20
1
min.
max.
4
30ms
30ms
2
3
min.
30ms
5
1 sensor 8s
2 sensors 15s
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