B-2
Valco Cincinnati, Inc.
Appendix B - Diagnostics
MC091 - VCX OT-120 Control System - Corrugated
The parent machine does not have to be operating in order to verify the
operation of the scanner.
Scanner diagnostics should be done
only after internal diagnostics have
proven that the control’s main board is
operating properly.
To verify operation of the scanner, follow these steps:
1.
Ensure that the red LED on the body of the scanner illuminates
when product is detected.
The “SCAN” light LED on the main
board should also illuminate.
The “SCAN” light goes out on a VC-
350, V-401, and V-451 main board.
2.
If the LED on the scanner body does not illuminate, adjust the
sensitivity of the scanner:
2a.
Verify the distance from scanner to product is 1-2"
(maximum distance can be 4" with increased error).
2b.
Adjust the scanner gain screw so that product is
sensed 1" past the normal product location.
3.
If the sensitivity adjustment fails to correct the problem, or if the
LED on the scanner body is illuminated but the SCAN light LED
is not, ensure that the scanner cable is not damaged and that
there are no loose scanner cable connections.
The scanner will not operate properly if
the bracket is loose on the machine.
This causes vibrations as the product
travels.
4.
Replace the scanner if the diagnostics listed above do not solve
the problem.
Scanner
Diagnostics
