Contents

Troubleshooting
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. If that occurs, use this section as a reference and perform the appropriate
countermeasures.
If the contents of the fault are displayed, refer to page 6-2, Protective and Diagnostic Functions.
If A Parameter Cannot Be Set
Use the following information if a parameter cannot be set.
•The display does not change when the Increment and Decrement keys are pressed.
The following causes are possible:
The Inverter is operating (drive mode).
There are some parameters that cannot be set during operation. Turn off the RUN command and then set the
parameters
Passwords do not match. (Only when a password is set.)
If the parameter A1-04 (Password) and A1-05 (Password Setting) settings are different, the parameters for the
initialize mode cannot be changed. Enter the correct password in A1-04.
If you cannot remember the password, display A1-05 (Password Setting) by pressing the Shift/RESET key
and the MENU key simultaneously while in the A1-04 display. Then set the password and input the set password
in parameter A1-04.
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•OPE01 through OPE11 is displayed.
The set value for the parameter is wrong. Refer to Table 6.23 in this chapter and correct the settings.
•CPF00 or CPF01 is displayed.
This is a Digital Operator/Monitor communication error. The connection between the Digital Operator/Monitor
and the Inverter may be faulty. Remove the Digital Operator/Monitor and then re-install it.
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