KITO Harrington RY Series, Owner'S Manual

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7.2 VFD Troubleshooting
7.2.1 If the VFD or motor runs irregularly, check the alarm/error on the LED display. Details of the types of
alarms and errors shown in
Table 7-2 and are as follows:
•
Error
•
Minor Failure/Warning
•
Operation Error
Table 7-2 Types of Alarms and Errors
Type Status of the VFD in case of an alarm or error
Display
Summary
Display
Details
and
Remedies
Error
When an Error is detected, the following states occur:
•
Characters indicating the details of the error are displayed
on the LED, and the ALM mode turns on.
•
The VFD output is shut down, and the motor stops after a
free run. (However, a manner to stop can be preset
depending on the sorts of errors.)
Table 7-3 Table 7-6
Minor
Failure/
Warning
When Minor Failure/Warning is detected, the following states
occur:
•
Characters indicating the details of the minor failure blink on
the LED, and the ALM mode blinks.
•
The motor does not stop.
Measures: After detection of minor failure/warning, remove the
cause. The VFD automatically returns to the original state.
Table 7-4 Table 7-7
Operation
Error
An Operation Error is displayed for a parameter input error,
wrong combination ofparameters, or failure of the option card.
When an operation error is detected, the following state occurs:
•
Characters indicating the details of the error are displayed
on the LED.
Measures: After detection of an error, remove the cause of the
error by setting the parameter, etc. The VFD cannot start until
the parameter is set correctly.
Table 7-5 Table 7-8