Mitsubishi Electric FR-CC2-N Series, Instruction Manual

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5. PARAMETERS
5.2 (E) Environment setting parameters
1
2
3
4
5
6
7
8
9
10
5.2.8 Password
Registering a 4-digit password can restrict access to parameters (reading/writing).
*1 Although "0 or 9999" can be input in Pr.297 , the value is invalid. (The display cannot be changed.)
 Parameter reading/writing restriction level (Pr.296)
• The level of access (reading/writing) using the operation panel or via RS-485 communication can be restricted with Pr.296 .
○ : Enabled, ×: Disabled
*1 If the parameter writing is restricted by the Pr.77 Parameter write selection setting, those parameters are unavailable for writing even when " ○ "
is indicated.
 Locking parameters with a password (Pr.296, Pr.297)
• The procedure of locking parameters with a password is as follows.
1.
Set the parameter reading/writing restriction level to enable the password protection. (Set a value other than "9999"
in
Pr.296 .)
*1 If an invalid password is input 5 times while any of "100 to 103, 105, or 106" is set in Pr.296 , the locked parameters cannot be unlocked afterward
even with the valid password All parameter clear can unlock the restriction. (In this case, the parameters are returned to their initial values.)
2.
Write a four-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".
• " " 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 converter unit, such as parameters related to the life check
of converter parts, are overwritten as needed.
 Unlocking the locked parameters (Pr.296, Pr.297)
• There are two ways to unlock the locked parameters.
Pr. Name Initial value Setting range Description
296
E410
Password lock level 9999
0 to 3, 5, 6, 100 to
103, 105, 106
Password protection enabled. Setting the access
(reading/writing) restriction level to parameters locked
with a password enables writing to Pr.297.
9999 No password protection
297
E411
Password lock/unlock 9999
1000 to 9998
Input a 4-digit password to lock parameters, or input the
valid password to unlock the locked parameters.
(0 to 5)
*1
Number of failed password attempts (read only,
displayed after any of "100 to 103, 105, or 106" is set in
Pr.296 and a password to lock parameters is input).
9999
*1
No password protection
Pr.296 setting
Operation panel RS-485 communication
Read Write
*1
Read Write
*1
9999 ○ ○ ○ ○
0, 100 × × × ×
1, 101 ○ × ○ ×
2, 102 ○ × ○ ○
3, 103 ○ ○ ○ ×
5, 105 × × ○ ○
6, 106 ○ ○ × ×
Pr.296 setting
Allowable number of failed password
attempts
Pr.297 readout
0 to 3, 5, 6 Unlimited Always 0
100 to 103, 105, 106
*1
Limited to 5 times Number of failed password attempts (0 to 5)