MITSUBISHI ELECTRIC FR-S520E - Manual (Page 122)

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Operation selection function parameters
2.10.7 Parameter write disable selection (Pr. 77 )
<Setting>
You can select between write-enable and disable for parameters. This function
is used to prevent parameter values from being rewritten by incorrect operation.
Parameter Name
Factory
Setting
Setting
Range
Remarks
77
Parameter write disable
selection
0 0, 1, 2 Setting is enabled when Pr. 30 = "1"
Pr. 77 Setting Function
0 Write is enabled only during a stop in the PU operation mode. (*)
1
Write disabled.
Values of Pr. 22, Pr. 30, Pr. 75, Pr. 77 and Pr. 79 can be written.
2
Write is enabled even during operation. Write is enabled independently of
the operation mode.
CAUTION
•*The shaded parameters in the parameter list always allow setting. Note that
the Pr. 70 and Pr. 72 values may be changed during PU operation only.
•If Pr. 77 = 2, the values of Pr. 17, Pr. 23, Pr. 28, Pr. 60 to Pr. 63, Pr. 64, Pr. 65,
Pr. 71, Pr. 79, Pr. 98, Pr. 99, CLr cannot be written during operation. Stop
operation when changing their parameter settings.
•By setting "1" in Pr. 77, the following clear operations can be inhibited:
• Parameter clear
• All clear