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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.
If the contents of the fault are displayed, refer to Protective and Diagnostic Functions.
If Inverter Parameters Cannot Be Set
Use the following information if an Inverter parameter cannot be set.
The display does not change when the
The following causes are possible.
The Inverter is operating (drive mode).
There are some parameters that cannot be set during operation. Turn the Inverter off and then make the set-
tings.
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
H1-06). 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
Inverter may be faulty. Remove the Digital Operator and then re-install it.
and
Keys are pressed.
Troubleshooting
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Table of Contents
Troubleshooting
