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Troubleshooting Basics
4-9
KVAL 990-F4 Service Manual
• Does the
Position Feed Back
agree with the
Load
position?
In other words are the correct photo eyes, limit switches or ferrous sensors acti
-
vated? Check the controller 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.
Содержание 990-F4
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Страница 28: ...How to Download the Service Application KVAL 990 F4 Service Manual 1 20 Page Intentionally Left Blank ...
Страница 30: ...Safety Sign Off Sheet KVAL 990 F4 Service Manual 1 22 ...
Страница 82: ...Collet Torque Values KVAL 990 F4 Service Manual 3 48 ...
Страница 114: ...Symptoms and Possible Causes KVAL 990 F4 Service Manual 4 32 ...
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