MD380 User Manual Desc
ription of Function Codes
- 179 -
Group F6: Start/Stop Control
Function Code Parameter Name Setting Range Default
F6-00 Startup mode
0: Direct startup
1: Catching a spinning motor
2: Pre-excited startup (AC asynchronous
motor)
0
0: Direct startup
– If the DC injection braking active time is set to 0, the AC drive starts to run at the
startup frequency.
– If the DC injection braking active time is not 0, the AC drive performs DC injection
braking first and then starts to run at the startup frequency. It is applicable to
small-inertia load application where the motor is likely to rotate at startup.
1: Catching a spinning motor
To catch a spinning motor, the AC drive detects the speed and direction of the spinning
motor, and outputs the voltage corresponding to the motor frequency, minimizing
impact of power supply to the motor.
It is applicable to the restart upon instantaneous power down of large-inertia load. To
ensure the performance of rotational speed tracking restart, set the motor parameters
in group F1 correctly.
2: Pre-excited startup (AC asynchronous motor)
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the motor runs. For pre-excited current and pre-excited time, see parameters of F6-05
and F6-06.
– 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.
Function Code Parameter Name Setting Range Default
F6-01
Motor of catching a
spinning motor
0: From stop frequency
1: From zero speed
2: From maximum frequency
0
To catch a spinning motor within the shortest time, select a proper catching mode.
0: From stop frequency
It is the commonly selected mode.
1: From zero frequency
It is applicable to restartup after a long time of power failure.
2: From the maximum frequency
It is applicable to the power-generating load.
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