Kval 990FX, Руководство по эксплуатации и обслуживанию

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Troubleshooting Electrical Problems
5-21
KVAL Operation/Service Manual
Check for Tripped Circuits
1.
Remove lock and tag outs on the main power sources.
2.
Manually close disconnect sensors and energize the control circuit or transformer
with its respective sensor. Check the Status Light Panel,. If all lights are observed,
there are no overloads or emergency stops tripped.
Note: Most electrical problems are related to mechanical malfunction (e.g., stuck
motors, jammed chain, blocked photo sensors etc.)
Note: If a solenoid valve is suspected, and not cleared in the air checks section (see),
it can be electrically jumped to check operation.
Error Checking on the Variable Frequency Drives
VFDs (Variable Frequency Drives) interact with hinge and faceplate routers, width adjust motors,
and feed motors. If issues occur, error codes are displayed on the VFDs. To help troubleshoot,
refer to the VFD manuals located in the High Frequency Panel for lists of the error codes. See
“About the Electrical Panels” on page 2-62 for locations of VFDs.
Troubleshooting with the Status Light Panel
The Status Light Panel is located on the Electrical Panel. All six lights are illuminated when the
system is in proper working order. The lights turn on in a sequence and will stop at the point
where a fault is first detected.
4.
With the power off, check for motor overloads by pressing each reset button (usu-
ally at the bottom of the panel) in SEQUENCE. If one is tripped there will be a
slight resistance to touch and a “click” sound as it is reset.
Trip Indicator
Press Reset
Thermal Overload Relay
Test