Mitsubishi Electric 800 Series Instruction Manual (Function page 214

*1 If an invalid password is input 5 times while any of "100 to 106, or 199" is set in Pr.296, the password is locked up afterward (the locked parameters
cannot be unlocked even with the valid password). All parameter clear is required to reset the password. (After All parameter clear is performed,
the parameters are returned to their initial values.)
2.
Write a 4-digit number (1000 to 9998) to Pr.297 as a password (writing is disabled when Pr.296 = "9999"). After a
password is set, parameters are locked and access (reading/writing) to the parameters is limited at the level set in
Pr.296 until the valid password is input to unlock the locked parameters.
NOTE
• After a password is set, the Pr.297 readout is always any of "0 to 5".
• "LOCD" appears when a password-protected parameter is attempted to be read/written.
• Even if a password is set, the parameters which are written by the inverter, such as parameters related to the life check of
inverter parts, are overwritten as needed.
 Unlocking the locked parameters (Pr.296, Pr.297)
• There are two ways to unlock the locked parameters.
• Enter the password in Pr.297. When a valid password is input, the locked parameters can be unlocked. When an invalid
password is input, an error indication appears and the parameters cannot be unlocked. If an invalid password is input 5
times while any of "100 to 106, or 199" is set in Pr.296, the locked parameters cannot be unlocked afterward even with the
valid password (the password is locked up).
• Perform All parameter clear.
NOTE
• If the password is forgotten, it can be reset by performing All parameter clear, but the other parameters are also reset.
• All parameter clear cannot be performed during the inverter operation.
• When using FR Configurator2 in the PU operation mode, do not set "0, 4, 5, 99, 100, 104, 105, or 199" (parameter read is
disabled) in Pr.296. Doing so may cause abnormal operation.
• The means to reset the password varies according to how the reset command is sent (from the operation panel, through RS-
485 communication, or via a communication option).
All parameter clear
Parameter clear
○: Password reset enabled, ×: Password reset disabled
• To perform Parameter clear or All parameter clear via a communication option, refer to the Instruction Manual of each option.
(For details of the operation panel, refer to
(Communication).)
 Access to parameters according to the password status
Password protection disabled / Parameters
Parameter
Pr.296 = "9999",
Pr.297 = "9999"
*1
Read
○
Pr.296
*1
Write
○
*1
Read
○
Pr.297
Write ×
Pr.CLR write
○
(Parameter clear)
ALL.C write (All
○
parameter clear)
○: Enabled, ×: Disabled
*1 Reading/writing is disabled if reading is restricted by the Pr.160 setting. (Reading is available in the Network operation mode regardless of the
Pr.160 setting.)
*2 All parameter clear cannot be performed during the operation.
*3 Inputting a password is possible but the locked-up password cannot be unlocked or reset even with the valid password.
*4 Parameter clear can be performed only via a communication option.
Parameters referred to
Pr.77 Parameter write selectionpage 209
Operation panel RS-485 communication
○ ○
× ×
page 21. For details of RS-485 communication, refer to the Instruction Manual
unlocked
Pr.296 ≠ "9999",
Pr.297 = "9999"
○
*1
○
○
○
○
○
Communication option
○
○
Parameters locked
Pr.296 ≠ "9999",
Pr.297 = "0 to 4" (read value)
○
×
○
○
*4
×
*2
○
9. (E) Environment Setting Parameters
Password locked up
Pr.296 = "100 to 106, 199"
Pr.297 = "5" (read value)
○
×
○
*3
○
*4
×
*2
○
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9.11 Password
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