4.16 Start Mode Setting
Select the start mode to use when the operation command is input with the motor in the stopped
condition.
4.16.1 Acceleration Start
Acceleration start is a general acceleration mode. If there are no extra settings applied, the motor
accelerates directly to the frequency reference when the command is input.
Ad 07 Start mode Start mode 0 Acc
0–1
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4.16.2 Start After DC Braking
This start mode supplies a DC voltage for a set amount of time to provide DC braking before an
inverter starts to accelerate a motor. If the motor continues to rotate due to its inertia, DC braking
will stop the motor, allowing the motor to accelerate from a stopped condition. DC braking can
also be used with a mechanical brake connected to a motor shaft when a constant torque load is
applied, if a constant torque is required after the the mechanical brake is released.
Ad
The amount of DC braking required is based on the motor’s rated current. Do not use DC braking
resistance values that can cause current draw to exceed the rated current of the inverter. If the DC
braking resistance is too high or brake time is too long, the motor may overheat or be damaged.