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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-4 Detailed Functions (Group b)
7
• This function suppresses the overcurrent caused by a steep current increase during rapid
acceleration.
• Enable or disable the function in the Overcurrent Suppression Selection (b027).
This section describes the functions you can use to protect Inverter parameter settings from rewriting.
• Use the soft lock function to set whether to enable or disable the writing of parameter data. This helps
prevent data rewriting due to erroneous operation.
• In the Soft Lock Selection (b031), select to which parameter data you want to apply the soft lock.
• To control the soft lock function via a multi-function input terminal, set the Multi-function Input S1 to
S8 Selection to 15 (SFT: Soft lock).
• Setting the Soft Lock Selection (b031) to 10 (Data can be changed during RUN) enables to change
parameter data, which is marked with under “Changes during operation” in Section 4 Parameter List,
during operation.
Note that only this setting is provided for disabling, instead of enabling, the parameter lock function.
Overcurrent Suppression Selection
Parameter No. Function name Data Default data Unit
b027
Overcurrent
Suppression Selection
00: Disabled
01: Enabled
01 –
Parameter Write Protection
Soft Lock Function
Parameter No. Function name Data Default data Unit
b031 Soft Lock Selection
00: Data other than b031 cannot be
changed when terminal SFT is
ON.
01: Data other than b031 and set
frequency cannot be changed
when terminal SFT is ON.
02: Data other than b031 cannot be
changed.
03: Data other than b031 and set
frequency cannot be changed.
10: Data can be changed during RUN.
01 –
Related functions C001 to C008, SFT input
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