LSIS LSLV0055H100-4COFN - Kinetic Energy Buffering

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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.
Grou
p
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
125–145
%
80
Kinetic energy buffering
slip gain
KEB Slip
Gain
300
1–20000
-
81
Kinetic energy buffering
P-Gain
KEB P Gain
1000
1–20000
-
82
Kinetic energy buffering
I gain
KEB I Gain
500
1–20000
-
83
Kinetic energy buffering
acceleration time
KEB Acc
Time
10.0
0.0–600.0
Sec
command sources set in Freq Ref Src for DRV-07 (followed by Jog operation and multi-step
acc/dec).
If a fault trip occurs during a time event operation, the inverter stops the operation and
stays in a trip state. When this happens, there are two options to resume the stopped
operation:
• Set PRT-08 (RST Restart) to ‗YES‘ to allow the inverter to automatically restart after
the trip condition is released.
• Refresh the setting at AP3-70 (Time Event En). Set AP3-70 to ‗Yes‘ from ‗No‘. If one of
the input terminals (IN-65–71 Px Define) is assigned to it, turn the swtich off then turn it
back on to resume the time event operation.