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4-2 Function Mode
4
Functions
Power Recovery Restart Prevention Function
For safety reasons, this function causes a USP trip (E13) while the RUN command (FW/RV) from
the control terminal (terminal) is turned on, in either of the following conditions:
• When the power is turned on
• After an undervoltage trip is reset
•You can reset a USP trip by tuning off the RUN command (example 1) or resetting the Inverter.
The Inverter starts running immediately after a trip reset if the RUN command is still turned on.
(Example 2)
•To return from a USP trip to normal operation, shut off the power, turn off the RUN command, turn
on the power again, and then turn on the RUN command. (Example 3)
•Allocate 13 (USP) to the desired multi-function input.
•The following shows how this function works.
Soft Lock Function
Use this function to prohibit rewriting of each parameter.
This helps prevent data rewriting due to erroneous operation.
•Allocate 15 (SFT) to the desired multi-function input.
Data Symbol Function name Status Description
13 USP USP function
ON
Does not start the Inverter with the power turned
on while the RUN command is input.
OFF
Starts the Inverter with the power turned on while
the RUN command is input.
Related functions C001 to C005
(Example 1)
Power supply
FW
USP
RS
Alarm
Output
frequency
(Example 2)
Power supply
FW
USP
RS
Alarm
Output
frequency
(Example 3)
Power supply
FW
USP
RS
Alarm
Output
frequency
Data Symbol Function name Status Description
15 SFT Soft lock
ON
Rewriting is unacceptable except for specified
parameters.
OFF Depends on the b031 setting.
Related functions C001 to C005
Required settings b031 (soft lock excluded)
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