8-14
8-2 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. If the contents
of the fault are dis
-
played, refer to
8-1 Protective and Diagnostic Functions
.
H If Parameter Constants Cannot Be Set.
D The display does not change when the Increment and Decrement Keys are
pressed.
• Passwords do not match.
If
the parameter A1-04 (Password 1) and A1-05 (Password 2) numbers are dif
ferent, the constants for
the
initialize mode cannot be changed. Reset the password. If
you cannot remember the password,
display
A1-05 (select password) 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.)
• Constant write-in prohibition is input.
This
occurs when “program lockout” (set value: 1B) is
set for a multi-function input. If the program lock
-
out input is OFF, the constants cannot be changed. Turn it ON and then set the constants.
• The Inverter is operating (drive mode).
There
are some constants that cannot be set during operation. T
urn the Inverter of
f and then make the
settings.
D OPE01 through OPE11 is displayed.
This is a parameter setting error. The set value for the parameter constant is wrong. Refer to
8-1-3
Operation Errors
and correct the setting.
D CPF00 or CPF01 is displayed.
This
is a Digital Operator transmission fault. The connection between the Digital Operator and the In
-
verter may be faulty. Remove the Digital Operator and then re-install it.
H If the Motor Does Not Operate
D The motor does not operate when the Run Key on the Digital Operator is pressed.
• The operation method setting is wrong.
If
parameter b1-02 (run source) is set to “1” (control circuit terminal), the motor will not operate when
the
Run Key is pressed. Either press the Local/Remote Key* to switch to Digital Operator operation or
set parameter b1-02 to “0” (Digital Operator).
* The
Local/Remote Key is enabled (set value: 1) or disabled (set value: 2) by means of parame
-
ter o2-01. It is enabled when the drive mode is entered.
Maintenance Operations Chapter
8
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