LSIS LSLV0055H100-4COFN - Page 245

231
Learning Advanced Features
Kinetic Energy Buffering Operation Setting Details
Code
Description
CON-77
KEB Select
Select the kinetic energy buffering operation when the input power is
disconnected.
Setting
Function
0
No
General deceleration is carried out until a low
voltage trip occurs.
1
Yes
The inverter power frequency is controlled
and the regeneration energy from the motor
is charged by the inverter.
CON-78
KEB Start Lev,
CON-79
KEB Stop Lev
Sets the start and stop points of the kinetic energy buffering operation. The
set values must be based on the low voltage trip level at 100%, and the
stop level (CON-79) must be set higher than the start level (CON-78).
CON-80
KEB Slip Gain
Used to prevent malfunctions caused by low voltage from initial kinetic
energy buffering occurring due to power interruptions.
CON-81
KEB P Gain
Used to maintain the voltage during the kinetic energy buffering operation.
It operates the inverter by modifying the set value to prevent malfunctions
caused by low voltage after power interruptions.
CON-82
KEB I Gain
Used to maintain the voltage during the kinetic energy buffering operation.
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.