Valco Cincinnati VC350A, Manual

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10-13 Valco Cincinnati, Inc.
MC060 Manual/VC350AG AutoGlue Control System Section 10 - Troubleshooting
3. On a shaft-mounted encoder assembly, check for the following:
-Worn timing belt or gears*
-Incorrect belt tension*
-Damaged encoder cable
-Loose cable connections
* These items may cause diagnostic LEDs to falsely indicate proper
encoder operation.
4. On a wheel-mounted encoder assembly, check for the following:
-Worn rubber on the wheel*
-Incorrect tension between the wheel and the drive belt*
-Damaged encoder cable
-Loose cable connections
* These items may cause diagnostic LEDs to falsely indicate proper
encoder operation.
5. Replace the encoder if the diagnostics listed above do not solve
the problem.
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 the internal diagnostics have
proven that the 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 (D3) on the main
board should also illuminate.
2. If the LED on the scanner body does not illuminate, adjust the
sensitivity of the scanner:
2a. Verify that 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.
Scanner Diagnostics
Encoder Diagnostics - Continued