HV580L Series Frequency Inverter
123
It is valid only for asynchronous motor and used for building the magnetic field before the motor runs. For
pre-excited current and pre-excited time, see parameters of P6-05 and P6-06.
– If the pre-excited time is 0, the AC drive cancels pre-excitation and starts to run at startup frequency.
– If the pre-excited time is not 0, the AC drive pre-excites first before startup, improving the dynamic
response of the motor.
P6-01
Rotational speed
tracking mode
Default
0
Setting Range
0
From frequency at stop
1
From zero speed
2
From maximum frequency
To complete the rotational speed tracking process within the shortest time, select the proper mode in which
the AC drive tracks the motor rotational speed.
0: From frequency at stop
It is the commonly selected mode.
1: From zero frequency
It is applicable to restart after a long time of power failure.
2: From the maximum frequency, it is applicable to the power-generating load.
P6-02
Rotational speed tracking speed
Default
20
Setting Range
1
~
100
In the rotational speed tracking restart mode, select the rotational speed tracking speed. The larger the value
is, the faster the tracking is. However, too large value may cause unreliable tracking.
P6-03
Startup frequency
Default
0.00Hz
Setting Range
0.00Hz
~
10.00Hz
P6-04
Startup frequency holding time
Default
0.0s
Setting Range
0.0s
~
100.0s
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.
The startup frequency (P6-03) 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.
Example 1:
P0-03
=
0
The frequency source is digital setting.
P0-08
=
2.00Hz The digital setting frequency is 2.00 Hz.