7-18
7
Troubleshooting
Due to parameter setting errors, faulty wiring etc., 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 countermea-
sures.
If a fault code is displayed, refer to page 7-2, Protective and Diagnostic Functions.
îš‹ If A Parameter Cannot Be Set
Use the following information if a parameter cannot be set.
îš„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 the password got lost, check parameter A1-05 (Password Setting) by pressing the Shift/RESET key and the
MENU key simultaneously in the A1-04 display. Read the password and set it in parameter A1-04.
îš„OPE01 through OPE11 is displayed.
The set value for the parameter is wrong. Refer to Table 7.4 in this chapter and correct the settings.
îš„CPF00 or CPF01 is displayed.
This is a Digital Operator/LED Monitor communication error. The connection between the Digital Operator/
LED Monitor and the Inverter may be faulty. Remove the Digital Operator/LED Monitor and then re-install it.
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