– If the pre-excited time is not 0, the AC drive pre-excites first
before startup, improving the dynamic response of the motor.
P1.01 Startup frequency Setting Range：0.00～
10.00Hz
0.00
P1.02 Startup frequency holding
time
Setting Range：0. 0～100.0s 0.0
To ensure the motor torque at AC drive startup, set a proper startup frequency. In addition,
to build excitation when the motor starts up, the startup frequency must be held for a certain
period.
NOTE：
The startup frequency (P1.01) is not restricted by the frequency lower limit. If the set target
frequency is lower than the startup frequency, the AC drive will not start and stays in the
standby state.
During switchover between forward rotation and reverse rotation,
the startup frequency holding time is disabled. The holding time is
not included in the acceleration time but in the running time of
simple PLC.
P1.03 Startup DC braking current/
Pre-excited current
Setting Range: 0%～100% 0
P1.04 Startup DC braking time/
Pre-excited time
Setting Range: 0.0s～100.0s 0.0
Startup DC braking is generally used during restart of the AC drive after the rotating motor
stops. Pre-excitation is used to make the AC drive build magnetic field for the asynchronous
motor before startup to improve the responsiveness.
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