E6581386
E-32
5
2) Restarting motor during coasting (Motor speed search function)
Motor speed
F-CC
S3 (ST operation standby
signal) -CC
+=: This function operates after the S3-CC terminal connection has been opened first and then connected
again.
Example: When ST standby signal is assigned to the S3 terminal, setting to 2, to (cancels the “ST
standby signal always ON” setting. By default, this parameter is set to : always ON.) and to
(assigns ST standby signal to the S3 terminal) makes it possible to momentarily stop and restart the motor
by just turning the S3 terminal off and then back on.
Title Function Adjustment range Default setting
Example of setting
Auto-restart control
selection
:Disabled
:At auto-restart after momentary stop
:When turning ST operation standby
signal on or off
: +
:At start-up
or
* To restart the inverter in operation panel operation mode, press RUN key after a power failure.
* When (Number of PG input phases) = (single phase) in PG feedback vector control mode (=), the
inverter may trip (: speed error) if the direction of rotation of the motor does not agree with.
Operation and application of the auto-restart function
• By using retry function together, auto restart function can be actuated at the time of tripping.
The motor coasts during the waiting period between the entry of a start command and the start of operation. If the coasting of
the motor during this period does harm to the machine, do not use the retry function.
• At restart, it takes several 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.
• When the auto restart function is selected, this function is actuated also at time of activation of motor and at the first
operation after the reset of tripping. The operation will restart after the waiting time passes.
• 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.
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