7-10
7-2 Troubleshooting
Due
to parameter setting
errors, faulty wiring, and so on, the Inverter and
motor may not operate as expected when
the system is started up. If that
should occur, use this section as a reference and apply the appropriate
measures.
Refer
to
7-1 Protective and Diagnostic Functions
, if the contents of the fault
are displayed,
7-2-1 Parameters Fail Set
H The display does not change when the Increment or
Decrement Key is pressed.
•Parameter write-prohibit is input.
This
occurs when n01 for parameter write-prohibit selection/parameter initialization
is set to 0. Set n01 to an appropriate value according to the parameter to be set.
•The Inverter is operating.
There
are some parameters
that cannot be set during operation. Refer to the list of
parameters. Turn the Inverter off and then make the settings.
H The Digital Operator does not display anything.
Turn
the Inverter of
f and on. If the Digital Operator still does not display anything, the
internal circuitry of the Inverter must have failed. Replace the Inverter.
7-2-2 Motor Fails to Operate
H The motor does not operate with input through the control
circuit terminals even though the frequency reference is
correct.
•The operation method setting is incorrect.
If parameter n02 for operation mode selection is not set to 1 to enable the control
circuit
terminals, the RUN command cannot be executed through the control circuit
terminals.
Check and correct the setting in n02.
Maintenance Operations Chapter
7
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