LSIS 6731001500, User Manual

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Learning Advanced Features
5.23 Kinetic Energy Buffering
When the input power supply is disconnected, the inverter’s DC link voltage decreases, and a low
voltage trip occurs blocking the output. A kinetic energy buffering operation uses regenerative
energy generated by the motor during the blackout to maintain the DC link voltage. This extends
the time for a low voltage trip to occur, after an instantaneous power interruption.
Group Code Name LCD Display Parameter Setting Setting range Unit
CON
77
Kinetic energy
buffering selection
KEB Select 1 Yes 0–1 -
78
Kinetic energy
buffering start level
KEB Start Lev 130 110–140 %
79
Kinetic energy
buffering stop level
KEB Stop Lev 135 115–145 %
80
Kinetic energy
buffering slip gain
KEB Slip Gain 300 0–20000 -
81
Kinetic energy
buffering P-Gain
KEB P Gain 1000 0–20000 -
82
Kinetic energy
buffering I gain
KEB I Gain 500 1–20000 -
83
Kinetic energy
buffering
acceleration time
KEB Acc Time
10.0 0.75~90kW
0.0–600.0 Sec
30.0 110~500kW
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.