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“B” Group: Fine Tuning Functions
Configuring
Drive Parameters
3–24
Software Lock Mode
The software lock function keeps personnel from accidentally changing parameters in
the inverter memory. The feature has some options, but the software lock function (B21)
is not protected from operator editing. You can lock all other parameters except the
output frequency (F01), if desired. This allows the user to vary only the output
frequency.
NOTE: Since the software lock function B31 is always accessible, this feature is not the
same as password protection used in other industrial control devices.
NOTE: If redundant data protection is necessary, use one of the intelligent input
terminals (1 to 5) to allow a data change only when SFT is Off.
“B” Function
Run-
time
Edit
Defaults DOP,DRW,DOP+
Func.
Code
Name Description
EU/
US
Units
Func.
Code
Name
B31 Software lock mode
selection
Prevents parameter changes, in
four options, option codes:
00...all parameters except B31
are locked when SFT from
terminal is on
01...all parameters except B31
and output frequency F01
when SFT from terminal is on
02...all parameters except B31
are locked
03...all parameters except B31
and output frequency F01
setting are locked
✘
01 — F25 S-LOCK
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