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“B” Group: Fine Tuning Functions
Configuring
Drive Parameters
3–26
Software Lock Mode
The software lock function keeps personnel from accidentally changing parameters in
the inverter memory. Use B_31 to select from various protection levels.
The table below lists all combinations of B_31 option codes and
the ON/OFF state of the [SFT] input. Each Check ✔ or Ex ✘
indicates whether the corresponding parameter(s) can be edited.
The Standard Parameters column below shows access is permit-
ted for some lock modes. These refer to the parameter tables
throughout this chapter, each of which includes a column titled
Run Mode Edit as shown to the right. The marks (Check ✔ or
Ex ✘) under the “Run Mode Edit” column title indicate whether access applies to each
parameter as defined in the table below. In some lock modes, you can edit only F_01 and
the Multi-speed parameter group that includes A_20, A220, A_21–A_35, and A_38
(Jog). However, it does not include A_19, Multi-speed operation selection. The editing
access to B_31 itself is unique, and is specified in the right-most two columns below.
NOTE: Since the software lock function B_31 is always accessible, this feature is not
the same as password protection used in other industrial control devices.
B_31
Lock
Mode
[SFT]
Intelligent
Input
Standard Parameters
F_01 and
Multi-Speed
B_31
Stop Run Stop & Run Stop Run
00 OFF ✔ Run mode
edit access
✔✔✘
ON ✘✘ ✘✔✘
01 OFF ✔ Run mode
edit access
✔✔✘
ON ✘✘ ✔✔✘
02 (ignored) ✘✘ ✘✔✘
03 (ignored) ✘✘ ✔✔✘
Run
Mode
Edit
✘
✔