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Misoperation prevention and parameter
setting restriction
4.22.5 Password function (Pr. 296, Pr. 297)
Registering 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 491 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 330 .)
*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 330 .)
*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 420.)
318
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
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