Internal Control (Demo Mode) - Roland udk20 Manual

B0048991 / Rev. 1.3
6.3.6 Typical measurement cycle for unit in destacking application
In order to warrant 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 (This test must be performed).
See timing diagram chapter "6.3.1 System test"
3. The sensor is lowered onto the stack (this stack contains 1 or more sheets).
4. Measurement in order to detect last sheet in the stack (1-sheet signal = only one sheet in the
stack) provided there is no other metal under the stack.
5. Destack a sheet and move into monitoring position - at least 2 cm (.8 inch) away from stack.
6. Monitor and initiate action depending on measurement result:
• 0-sheet:
• 2-sheet:
After the measure again.
Attention: During the removal operation measurement should be switched off because of
• 1-sheet:
7. Transport sheet into the proper loading position.
8. Measurement to verify that the sensor is still on the sheet.
9. Release the sheet.
10. After de-stacking a sheet perform security check - Is the sheet de-stacked ?
11. Before de-stacking a new sheet perform point 1 "Selection of the desired measuring program"
or point 2 "System test".
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6.4

Internal control (Demo mode)

In this operating mode the system continuously executes measurements and activates
OUT0 ... OUT3.
In general, this operating mode is suitable for demonstration purposes only.
Prerequisite:
•
•
•
The refresh rate of the measurement is:
•
•
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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
Repeat destacking operation.
Initiate actions to remove double sheet or several sheets from destacker.
potentially undefined conditions, air gaps between sensor and sheet etc.
continue with point 7.
Supply voltage applied
System parameter 4 set to demo mode
Teach-In has been executed
for FE-Material 1 second
for NF and LM < 0,085 seconds
Manual
Communication with the PLC
79