BENSHAW RSi H2 Series - Page 172

Parameter Descriptions
160
890053-00-02
Kinetic Energy Buffering Operation Setting Details
Code
Description
CON-77
KEB Select
Select the kinetic energy buffering operation when the input power is
disconnected. When KEB Select is selected, it controls the inverter's
output frequency and charges the DC bus with regenerative energy from
the motor.
Setting
Function
0
None
General deceleration is carried out until a low voltage trip
occurs.
1
Yes
Inverter operation charges the DC bus with regenerated
energy. When the input power is restored, the inverter
changes to normal operation from the KEB operation.
The acceleration time set in CON-83 (KEB Acc Time) is
applied when restoring to normal operation.
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 as 100% and
the stop level (CON-79) must be set higher than the start level (CON-
78).
CON-80
KEB Slip Gain
The slip gain is for preventing a low voltage trip when the kinetic energy
buffering operation starts.
CON-81
KEB P Gain
The controller P Gain is for maintaining the voltage of the DC power
section during the kinetic energy buffering operation. Increase the
setting value when a low voltage trip occurs right after a power failure.
CON-82
KEB I Gain
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.
CON-.83
KEB Acc Time
Sets the acceleration time of the operating frequency when the inverter
returns to normal operation from KEB mode.
• 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.
• 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 perform better by increasing the
KEB P Gain and the KEB Slip Gain.
• Motors may vibrate during kinetic energy buffering operation for some loads. Better
performance can be achieved by increasing the P Gain and/or decreasing the I Gain.