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"B" Group: Fine Tuning Functions Section 3-6
3-6-25 Password Function
The MX2 inverter has password function to prevent from changing parameters
or to hide a part of parameters. There are two passwords for b037 (Function
Code Display Restriction) and b031 (Software Lock) corresponding to pass-
word A and password B.
If password is forgotten, there is no way to delete password. Please be careful
to set password.
• Overview of password function (Example of password A)
• Function Code Display Restriction Function and Software Lock
Function
•How to Set Password
1. Set parameter b037 and/or b031 depending on your demand
2. Set password in b190 and/or b192 ("0000" is not available.)
3. Password has been set and locked.
Parameter b037 and/or b031 cannot be changed.
• How to authenticate the Password
For a person who knows the password, unlock protection as follows.
1. Set password in b191 and/or b193
2. If entered password is matched, “good (Good)” is displayed for 1 second
and password protection is unlocked temporary. If cycling the power or no
key operation is pressed during 10 minutes the password protection is en-
abled again automatically. If entered passord doesn’t mach, “
Err (Error)” is
displayed and protection is not unlocked.
Password not set (default)
B190 = 0000 (accessible)
B191 = 0000 (impossible to change)
B037 = Accessible
Password protected
B190 = 0000 (impossible to change)
B191 = 0000 (accessible)
B037 = read only
Set “1234” in b190
(Set password)
In this mode, the password protection
is enabled and parameter b037 cannot
be changed.
Password authenticated
B190 = 1234 (accessible)
B191 = 1234 (impossible to change)
B037 = Accessible
In this mode, password protection is
temporary disabled, however, the
password is not deleted
Set “1234” in b191
Cycle the power or no key
operation for approx. 10 min.
Set “0000” in b190
(Delete password)
Target of password Function description Applied parameters
for setting password
Function Code
Display Restriction
B037 (password A)
Depending on the value in b037, a part of function
codes are not displayed. (Displayed parameters can be
changed.)
B190, b191
Software Lock
B031 (password B)
Depending on the value in b031, all or a part of parame-
ters can not be changed. (All the function codes and
data are displayed.)
B192, b193
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