Password Function (Pr. 296, Pr. 297) - Mitsubishi Electric 700 Series Instruction Manual

5.17.5 Password function (Pr. 296, Pr. 297)

Registering a 4-digit password can restrict parameter reading/writing.
Parameter
Name
Number
296 Password lock level
∗1
297 Password lock/unlock
∗2
Above parameters allow their settings to be changed during operation in any operation mode even if "0 (initial value) or 1" is set in Pr. 77 Parameter write selection.
∗1
The above parameters can be set when Pr. 160 User group read selection = "0".
∗2
When Pr. 296 = "9999" (no password lock), set Pr. 160 = "0" to enable the setting of this parameter. When the password lock is set, this parameter can be set
anytime regardless of the Pr. 160 setting.
∗3
The setting value "0 or 9999" can be set to Pr.297 at any time although the setting is invalid (the displayed value does not change).
∗4
Setting Pr.296 = "0 or 100" will cause the Option fault (E.OPT) to occur and the inverter to trip. Do not set these values.
(1) Parameter reading/writing restriction level (Pr. 296 )
Level of reading/writing restriction by PU/NET mode operation command can be selected by Pr. 296.
Operation command of the operation panel
Pr. 296 Setting
Read ∗1
9999
0, 100
1, 101
2, 102
3, 103
×
4, 104
×
5, 105
6, 106
Only parameters registered in the user group can be read/written.
99, 199
(For the parameters not registered in the user group, same restriction level as "4, 104" applies.)
∗1
If the parameter reading is restricted by the Pr. 160 setting, those parameters are unavailable for reading even when " " is indicated.
∗2
If the parameter writing is restricted by the Pr. 77 setting, those parameters are unavailable for writing even when " " is indicated.
∗3
Read/write is enabled only in the simple mode parameters registered in the user group when Pr.160 User group read selection = "9999". Pr.296 and Pr.297 are
always read/write enabled whether registered to a user group or not.
(2) Password lock/unlock (Pr.296, Pr.297 )
<Lock>
1) Set parameter reading/writing restriction level.(Pr. 296 ≠ 9999)
Pr.296 Setting
Value
1 to 6, 99
101 to 106, 199
* During [Pr. 296 = any of "101 to 106, 199"], if password unlock error has occurred 5 times, correct password will not
unlock the restriction. Parameter all 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.
Misoperation prevention and parameter setting restriction
Initial Value
9999
9999
Write ∗2
Option fault (E.OPT) occurs, and the inverter trips.
×
×
×
×
Restriction of Password
Unlock Error
No restriction
Restricted at fifth error Displays error count (0 to 5)
Setting Range
0 to 6, 99, Select restriction level of parameter reading/
100 to 106, 199 ∗4 writing when a password is registered.
9999 No password lock
1000 to 9998 Register a 4-digit password
Displays password unlock error count. (Reading
(0 to 5) ∗3 only)
(Valid when Pr. 296 = "100" to "106")
9999 ∗3 No password lock
Operation command through FL remote communication
Read
∗3
Pr.297 Display
Always 0
is displayed.
Description
Write ∗2
×
×
×
×
: enabled, ×: restricted
169
5