Password Function (Pr. 296, Pr. 297) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Misoperation prevention and parameter
setting restriction

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

Registering a 4-digit password can restrict parameter reading/writing.
Parameter
Number
296
*2
Password lock level
297
*2
Password lock/unlock
The above parameters can be set when Pr. 160 User group read selection = "0".
When Pr. 296 ≠ "9999" (with password lock), note that Pr. 297 is always available for setting regardless of Pr. 160 setting.
*1 Only Pr.297 can be set anytime as Pr.297 = "0 or 9999." However, the setting is invalid (the displayed value does not change).
*2 This parameter allows its setting to be changed during operation in any operation mode even if "0 (initial value) or 1" is set in Pr. 77 Parameter
write selection.
...............Specifications differ according to the date assembled. Refer to page 484 to check the SERIAL number.
(1) Parameter reading/writing restriction level (Pr. 296)
Level of reading/writing restriction by PU/NET operation mode operation command can be selected by Pr. 296.
PU Operation Mode Operation
Pr. 296 Setting
Read
9999
×
0, 100
*6
1, 101
2, 102
3, 103
4, 104 ×
×
5, 105
6, 106
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 This restricts parameter access from the command source that can write a parameter under the PU operation mode (initially the operation panel
(FR-DU07) or the parameter unit). (For how to select the PU mode command source, refer to page 322.)
*4 This restricts parameter access from the command source that can write a parameter under the Network operation mode (initially the RS-485
terminals or a communication option). (For how to select the NET mode command source, refer to page 322.)
*5 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.
*6 If a communication option is installed, option fault (E.OPT) occurs, and inverter trips. (Refer to page 412.)
310
Name Initial Value
9999
9999
Command
*3
Write
*1 *2
×
×
×
×
×
Only parameters registered in the user group can be read/written.
Setting Range
0 to 6, 99, 100 to Select restriction level of parameter reading/
writing when a password is registered.
106, 199
9999 No password lock
1000 to 9998 Register a 4-digit password
Displays password unlock error count.
(0 to 5) (Reading only) (Valid when Pr. 296 = "100"
*1
to "106", "199")
9999 No password lock
*1
NET Operation Mode Operation Command
RS-485 Terminals
Read Write
*2
× ×
×
×
× ×
× ×
Description
*4
Communication Option
Read Write
*2
× ×
×
×
×
×
*5
: enabled, ×: restricted