Troubleshooting Basics
6-9
KVAL 994-X Operation/Service Manual
In other words are the correct photo eyes, limit switches or ferrous sensors activated? Check the con-
troller inputs to insure the proper sensors are activated.
If the controller is a PLC, an activated input is
lit. Some touch screens have inputs status also.
3.
Common Position Feedback failures:
• Photo Eye: Bad element or bad cable
• Limit Switch: Stuck, or failure
• Wiring: Broken, worn insulation
• PLC: Bad input port.
4. Check the Positioning System
Follow the circuit from the Controller output to the Load and check for component
failures.
To Next Page
Loading...
