Chapter 4 Parameters
VFD-EL-W
4-23
4.2 Parameter Settings for Applications
Speed Search
Applications Purpose Functions
Related
Parameters
Windmills, winding
machines, fans and all
inertia loads
Restart a free-running
motor
Before the free-running motor stops
completely, the AC motor drive auto-searches
the motor speed and accelerates when its
speed is the same as the motor speed.
08.04–08.08
DC Brake before Running
Applications Purpose Functions
Related
Parameters
Windmills, fans, pumps
and others rotate freely
without power due to
wind or flow
Keep the free-running
motor at standstill
If the running direction of the free-running
motor is not steady, execute DC brake before
start-up.
08.00,
08.01
Energy Saving
Applications Purpose Functions
Related
Parameters
Punching machines,
fans, pumps and
precision machinery
Save energy and reduce
vibration
Save energy when the AC motor drive runs at
constant speed, yet has full power
acceleration and deceleration. For precision
machinery, it also helps reduce vibration.
08.17
Eight-step Speed Operation
Applications Purpose Functions
Related
Parameters
Conveying machinery
Cyclic operation at multi-
step speed
To control eight-step speed (including master
frequency) and duration by simple contact
signals.
04.06–04.08
05.00–05.06
Switching Acceleration and Deceleration Time
Applications Purpose Functions
Related
Parameters
Auto-turntable for
conveying machinery
Switch acceleration and
deceleration time through
external signal
When an AC motor drive drives two or more
motors, it can reach a high-speed but still start
and stop smoothly.
01.09–01.12
04.06–04.08
Overheating Warning
Applications Purpose Functions
Related
Parameters
Air conditioners Safety measure
When an AC motor drive overheats, a
thermal sensor triggers the overheating
warning.
03.00,
04.06–04.08
Operation Command
Applications Purpose Functions
Related
Parameters
General application
Select the control signal
source
Select the AC motor drive control by
external terminals or digital keypad or
RS-485.
02.01,
04.06–04.08
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