Mitsubishi Electric FR-E720-008 Instruction Manual page 191

(2) Password lock/unlock (Pr.296, Pr.297 )
<Lock>
1) Set parameter reading/writing restriction level.(Pr. 296 ≠ 9999)
Pr.296 Setting
Restriction of Password
Value
0 to 6, 99
100 to 106, 199
* 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.
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,
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.
<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.
NOTE
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.
All parameter clear
(data format H9966, H55AA)
Parameter clear
(data format H9696, H5A5A)
Misoperation prevention and parameter setting restriction
Unlock Error
No restriction
Restricted at fifth error Displays error count (0 to 5)
Operation panel/
FR-PU07
Pr.297 Display
Always 0
is displayed.
RS-485
communication
× ×
:Password can be unlocked. ×:Password cannot be unlocked.
Communication option
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