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2) Restarting motor during coasting (Motor speed search function)
Setting to o r : This function operates after the ST-CC terminal connection has been opened
first and then connected again.
Note:
The terminal function ST needs to be assigned to an input terminal, using the parameters to
.
3) Motor speed search at starting
When is set to , a motor speed search is performed each time operation is started.
This function is useful especially when the motor is not operated by the inverter but it is running because of
external force.
Warning!!
• At restart, it takes about 3 seconds for the inverter to check to see the number of revolutions of the
motor.
For this reason, the start-up takes more time than usual.
• Use this function when operating a system with one motor connected to one inverter.
This function may not operate properly in a system configuration with multiple motors connected to
one inverter.
Application to a crane or hoist
The crane or hoist may have its load moved downward during the
above waiting time from input of the operation starting command to
the restart of the motor. To apply the inverter to such machines,
therefore, set the auto-restart control mode selection parameter to
"=" (Disabled), Do not use the retry function, either.
Motor speed
Forward / reverse
ST-CC
F-25
E6581595
ON
OFF
ON
OFF
6
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