Kval 979-2, Operation And Service Manual

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Troubleshooting Electrical Problems
5-15
KVAL 979-2 Operation/Service Manual
About VFD Troubleshooting
This section describes some troubleshooting tools for the VFDs.
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 2-6 for locations
of VFDs.
Using the Reset Buttons
In some rare occasions an electrical spike may cause a VFD to shut down. On some
options, reset buttons are located on the door of the VFD panels. The button contains
the VFD function printed on the button. If a VFD is tripped to “OFF” the button will
be lit. To reset a VFD:
1.
Push lighted button to reset the indicated motor
c.If the button light turns off, continue with production.
d.If the button stays lit, find the source of the down motor (printed on the but-
ton). For example if the feed thru motor is not working, at operator station turn
the motor on and off to reset.
e.If issue continues, trace the path of the circuit on the electrical diagram and
troubleshoot further or contact our Service Center. See “Getting Help from
KVAL” on page 1-13 .
FIGURE 5- 32.
VFD Reset Buttons
Note: The number of reset buttons depends on the machine type and option. The fig-
ure above shows a machine with 11 VFDs
VFD Reset
Buttons