E6581090
• Function
This parameter detects the rotational speed and direction of rotation of the motor during coasting in the 
event of a momentary power failure, and restarts the motor smoothly as soon as power is restored (motor 
speed search function). Also, this parameter makes it possible to switch from commercial power operation to 
inverter operation without stopping the motor.
During restart operation, the message “” is displayed.
Title | Function | Adjustment range | Default setting | |
|
| 0: Disabled |
| |
| 1: At |
| ||
| 2: When | 0 | ||
selection | ||||
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| 3: At |
| |
|
| when |
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*When the motor restarts in retry mode, this function will be activated regardless of the parameter setting.
1)
6 | Input voltage |
| |
| Motor speed |
|
ON OFF
★ set to () : This function is activated when the power is restored after the main circuits and control power supply has detected an undervoltage.
2) Start of motor during coasting (Motor speed search function)
Input voltage 
R
ON OFF
ON OFF
*The ST (standby signal) function is not assigned to any terminal. If necessary, assign this function to an unassigned terminal, using the
★ set to (): The
Notes
•A waiting time between 200 and 300 msec is preset to allow the residual voltage in the motor to come down to a specified level during restart. For this reason, the
•Use this function when operating a system with one inverter connected with one motor. This function may not be performed properly in a system with one inverter connected with multiple motors.
Application to a crane or hoist
The crane or hoist might allow the load to move downward during the time elapsed before the motor starts after receiving an operation starting command. When applying the inverter to such a lifting gear, set the
