Inovance MD500 Series - Start Mode

6. Description of Parameters
- 119 -
6
■
F6-00 = 1: Catching a Spinning Motor
To catch a spinning motor, the AC drive detects speed and direction of spinning motor,
and then starts to run from the spinning motor frequency.
In this start mode, ensure that motor parameters in group F1 are set correctly.
Figure 6-31 Catching a spinning motor
Frequency
Time
Motor speed
F6-00 = 1: catching
a spinning motor
Automatic motor
speed tracking
Accelerate
RUN command
F6-21
(Demagnetization
time)
Motor speed
tracking time
■
F6-00 = 2: Pre-excited Start
It is valid only for asynchronous motor and used for building magnetic eld before motor
running. For pre-excited current and pre-excited time, see
F
6
-
0
5
and
F
6
-
0
6
.
–
If pre-excited time is 0, the AC drive cancels pre-excitation and starts to run from start
frequency.
–
If pre-excited time is not 0, the AC drive pre-excites first and then starts to run,
improving motor dynamic response.
■
F6-00 = 3: SVC quick start
It is applicable only for asynchronous motor in SVC mode, which can shorten acceleration
time. It is used when system inertia is large and quick start is required. But torque impact
exists in this mode.