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Misoperation prevention and parameter
setting restriction
4
PARAMETERS
(2) Password lock/unlock (Pr.296, Pr.297 )
<Lock>
1) Set parameter reading/writing restriction level.(Pr. 296 ≠ 9999)
*During [Pr. 296 = any of "100 to 106, 199"], if password unlock error has occurred 5 times, correct password
will not unlock the restriction. All parameter clear can unlock the restriction.
(In this case, parameter settings are cleared.)
2) Write a four-digit number (1000 to 9998) in Pr. 297 as a password.
(When Pr. 296 = "9999", Pr. 297 cannot be written.)
When password is registered, parameter reading/writing is restricted with the restriction level set in Pr. 296 until
unlocking.
<Unlock>
There are two ways of unlocking the password.
Enter a password in Pr. 297.
Unlocked when a password is correct. If a password is incorrect, an error occurs and not unlocked.
During [Pr. 296 = any of "100 to 106, 199"], if password unlock error has occurred 5 times, correct password will not unlock
the restriction. (During password lock)
Perform all parameter clear.
Pr.296 Setting
Value
Restriction of Password
Unlock Error
Pr.297 Display
0 to 6, 99 No restriction Always 0
100 to 106, 199 Restricted at fifth error
Displays error count (0 to
5)
REMARKS
⋅ After registering a password, a read value of Pr. 297 is always one of "0" to "5".
⋅ When a password restricted parameter is read/written, is displayed.
⋅ Even if a password is registered, parameters which the inverter itself writes, such as inverter parts life, are overwritten as
needed.
⋅ Even if a password is registered, Pr. 991 PU contrast adjustment can be read/written when a parameter unit (FR-PU04/FR-PU07)
is connected.
CAUTION
⋅ If the password has been forgotten, perform all parameter clear to unlock the parameter restriction. In that case, other
parameters are also cleared.
⋅ Parameter all clear can not be performed during the operation.
⋅ Do not use the FR Configurator when parameter read is restricted (Pr. 296 = any of "0, 4, 5, 99, 100, 104, 105, 199").
FR Configurator may not function properly.
REMARKS
⋅ The password unlock method is different for operation panel/FR-PU07, RS-485 communication, and communication option.
Operation panel/
FR-PU07
RS-485
communication
Communication
option
All parameter clear
(data format H9966, H55AA)
Parameter clear
(data format H9696, H5A5A)
××
:Password can be unlocked. ×:Password cannot be unlocked.