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R O L A N D
Rev. 1.0
6.1.6 Typical measuring cycle when using the unit for destacking
In order to ensure reliable functioning of the system, the following operating cycle is recommended.
It is recommended to perform step 2 at each cycle.
1.
Selection of the desired measuring program.
2.
System test without a sheet in front of the sensor (this test must be performed).
- checking the outputs. All outputs are switched LOW while the system test is performed.
- internal test: unit and sensor will be checked for function, no sheet must be in front of the sensor.
3.
The sensor is lowered onto the stack (which contains 1 or more sheets).
4.
Detection of the last sheet in the stack (1-sheet signal = only one sheet in the stack).
Condition: no metal underneath the last sheet.
5.
Destack a sheet and move into monitoring position - at least 2 cm (.8 inch) away from stack.
6.
Monitor and intitiate action depending on measurement result:
- 0-sheet:
Repeat destacking operation.
- 2-sheet:
Initiate actions to remove double sheet or several sheets from destacker.
Has the measure been executed, measure again.
Attention: During the removal operation, the measuring function should be switched off because
of potentially undefined conditions, air gaps between sensor and sheet etc.
- 1-sheet:
continue with item 7.
7.
Transport sheet into the proper loading position.
8.
Measure to verify that the sensor is still on the sheet.
9.
Deposite the sheet.
10. After de-stacking a sheet perform security check to verify that the sheet is de-stacked.
11. Before de-stacking a new sheet perform item 1 "Selection of the desired measuring program"
or item 2 "System test", without a sheet being in front of the sensor.
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
Page 71
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