Chapter 4 Parameters｜VFD-EL-W
60
4-2 Parameter Settings for Applications
Speed Search
The operating motor can be restarted without waiting for a complete stop. The drive automatically searches
the motor speed, and accelerates when the speed reaches the motor speed.
Inertial loads such as windmills
and winding equipment
The motor restarts during
operation
DC Brake before Operation
For a free-running motor, if the operation direction is uncertain, execute DC braking before start-up.
Loads that can be moved when
windmills and water pumps stop
The motor restarts during
operation
Energy-Saving Operation
Save energy according to the set proportion when the AC motor drive runs at constant speed, yet has full
power during acceleration and deceleration. Applicable for vibration reduction of precision machine tools.
Punch press, precision machine
tools
Save energy, reduce vibration
Eight-step Speed Operation
Use simple contact signals to control eight-step speed, including master frequency (four-step speed)
operation.
Cyclic operation at multi-step
speed
Pr.04.06–04.08, Pr.05.00–05.06
Multi-step Acceleration and Deceleration Switching Operation
Use external signals to switch multi-step acceleration and deceleration operation. When an AC motor drive
drives more than two motors, it reaches high speed operation, but still start/ stop smoothly.
Auto-turntable for Conveying
machinery
Switch acceleration and
deceleration time through external
signals
Pr.01.09–01.12. Pr.04-06–04.08
Overheat warning
When an AC motor drive overheats, a thermal sensor triggers the overheating warning.
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