Learning Advanced Features
Sets the start and stop points of the kinetic energy buffering operation.
The set values must be based on the low voltage trip level as 100% and
the stop level (Cn. 79) must be set higher than the start level (Cn.78).
The controller P Gain is for maintaining the voltage of the DC power
section during thekinetic energy buffering operation. Change the
setting value when a low voltage trip occurs right after a power failure.
The controller I Gain is for maintaining the voltage of the DC power
section during the kinetic energy buffering operation. Sets the gain
value to maintain the frequency during the kinetic energy buffering
operation until the inverter stops.
The slip gain is for preventing a low voltage trip due to load when the
kinetic energy buffering operation start from blackout.
Set the acceleration time of operation frequency when it restores normal
operation from the kinetic energy buffering operation under the input
power is restored.
Depending on the duration of Instantaneous power interruptions and the amount of load inertia,
a low voltage trip may occur even during a kinetic energy buffering operation. Motors may
vibrate during kinetic energy buffering operation for some loads except variable torque load (for
example, fan or pump loads).
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