LS ELECTRIC LSLV-H100 Series, User Manual

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Learning Advanced Features
Code Description
KEB I Gain Sets the gain value to maintain the operation until the frequency stops
during the kinetic energy buffering operation.
CON-83
KEB Acc Time
Sets the acceleration time for the frequency reference when the inverter’s
operation becomes normal after the kinetic energy buffering operation.
Note
•
The KEB functions may perform differently depending on the size of the loads. The KEB
Gains can be set for a better performance.
•
If a low voltage trip occurs after a power interruption, it indicates the load inertia and level
are high. In such cases, the KEB functions can be performed better by increasing the KEB
I Gain and the KEB Slip Gain.
•
If motor vibration or torque variation occurs during the KEB function operation after power
interruptions, the KEB functions can be performed better by increasing the KEB P Gain or
decreasing the KEB I Gain.
5.24 Anti-hunting Regulation (Resonance Prevention)
This function is used to prevent the hunting of a V/F controlled fan or motor caused by
current distortion or oscillation, due to mechanical resonance or other reasons.
Group Code Name LCD Display Parameter Setting Setting Range Unit
CON 13
Enable or
disable anti-
hunting
regulation
(resonance
prevention)
AHR Sel 1 Yes
0 No
-
1 Yes
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 for variable torque loads
(for example, fan or pump loads).