Parameter Description MD280/MD280N User Manual
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Group F4 Start/Stop Control
Startup mode
Factory default
value
0
0
Direct startup (When the DC brake
time is non-zero value, it can perform
DC brake before start.)
F4-00
Setup
value
1 Rotation velocity tracking startup
0: Direct startup:
When the DC brake time is zero, it starts at the startup frequency.
When the DC brake time is non-zero value, it can perform DC brake before
start. It is suitable for the applications where small inertia may cause
reverse rotation at the time of startup.
1: Rotation velocity tracking startup: The inverter firstly judges the rotation
velocity and direction of the motor and then starts at the frequency
corresponding to the tracked rotation velocity of the motor, and performs
smooth startup of the motor in rotation without impact.
It is suitable for the applications where large inertia is restarted due to
transient power shutdown.
In order to ensure the performance of the rotation velocity tracking startup,
it needs set the motor parameters (Group F1) correctly.
Rotation speed tracking mode
Factory default
value
0
0 Start from stop frequency
1 Start from zero speed
F4-01
Setup range
2 Start from maximum frequency
In order to complete the rotation speed tracking process in the shortest
period, it can select the mode of inverter tracking the rotation velocity of
motor:
0: Track downward from the frequency at the time of stop, which is
generally selected at first.
1: Track upward from zero frequency, which is used when the inverter is
restarted upon long period of power shutdown.
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