7-18
Troubleshooting
Due to parameter setting errors, faulty wiring, and so on, the Drive 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 appropri-
ate measures.
If the contents of the fault are displayed, refer to Protective and Diagnostic Functions.
If Parameters Cannot Be Set
Use the following information if an Drive parameter cannot be set.
The display does not change when the Increment and Decrement Keys are pressed.
The following causes are possible.
The Drive is operating (drive mode).
There are some parameters that cannot be set during operation. Turn the Drive off and then make the settings.
Parameter write enable is input.
This occurs when “parameter write enable” (set value: 1B) is set for a multi-function input terminal (H1-01 to
H1-10). If the parameter write enable input is OFF, the parameters cannot be changed. Turn it ON 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) numbers are different, the parameters for
the initialize mode cannot be changed. Reset the password.
If you cannot remember the password, display A1-05 (Password Setting) by pressing the Reset/Select Key and
the Menu Key simultaneously while in the A1-04 display. Then reset the password. (Input the reset password
in parameter A1-04.)
OPE01 through OPE11 is displayed.
The set value for the parameter is wrong. Refer to Operation Errors in this chapter and correct the setting.
CPF00 or CPF01 is displayed.
This is a Digital Operator communications error. The connection between the Digital Operator and the Drive
may be faulty. Remove the Digital Operator and then re-install it.
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