|
C1-09
|
Fast Stop Time
|
-
If ov [Overvoltage] occurs during KEB deceleration, increase the setting value.
-
If Uv1 [DC Bus Undervoltage] occurs during KEB deceleration, decrease the setting value.
|
x 1
|
-
|
-
|
-
|
|
C2-03
|
S-Curve Time @ Start of Decel
|
-
If ov occurs immediately after you start KEB deceleration, increase the setting value.
-
If Uv1 occurs immediately after you start operation, decrease the setting value.
|
x
|
-
|
x
|
x
|
|
L2-05
|
Undervoltage Detection Lvl (Uv1)
|
If Uv1 occurs immediately after you start KEB deceleration, increase the setting value to detect power loss more quickly.
|
x
|
x
|
x
|
x
|
|
L2-06
|
Kinetic Energy Backup Decel Time
|
|
-
|
-
|
x 2
|
x 2
|
|
L2-07
|
Kinetic Energy Backup Accel Time
|
Sets the acceleration time to return to the frequency reference value before a power loss, after you cancel the KEB operation. When L2-07 = 0, the drive uses the standard acceleration times set in C1-01, C1-03, C1-05, and C1-07 [Acceleration Time].
|
x
|
x
|
x
|
x
|
|
L2-08
|
Frequency Gain at KEB Start
|
-
If ov occurs immediately after you start operation, decrease the setting value.
-
If Uv1 occurs immediately after you start KEB deceleration, increase the setting value.
|
x
|
-
|
x
|
x
|
|
L2-10
|
Minimum KEB Time
|
-
With KEB Ride-Thru
There is Uv1 because you set a digital input for KEB Ride-Thru and the device that controls the input operated too slowly after power loss.
-
Without KEB Ride-Thru
If the DC bus voltage overshoots immediately after KEB Ride-Thru starts, increase L2-10 to longer than the overshoot.
|
x
|
x
|
x
|
x
|
|
L2-11
|
KEB DC Bus Voltage Setpoint
|
-
Single Drive KEB Ride-Thru 2
Set to approximately 1.22 x input voltage.
-
Single Drive KEB Ride-Thru 1, System KEB Ride-Thru 1, or System KEB Ride-Thru 2
Set to approximately 1.4 x input voltage.
|
x
|
x
|
x
|
x
|
|
L3-20
|
DC Bus Voltage Adjustment Gain
|
-
If ov or Uv1 occurs at the start of deceleration when you use KEB operation, increase this value in 0.1-unit increments.
-
If there is torque ripple during deceleration when you use KEB Ride-Thru, decrease the value.
|
-
|
x
|
-
|
-
|
|
L3-21
|
OVSuppression Accel/Decel P Gain
|
If there is large speed or current ripple, decrease the value in 0.05 unit increments.
Note:
If the setting value is too low, then the drive will have unsatisfactory DC bus voltage control response. The drive can detect ov or Uv1.
|
-
|
x
|
-
|
-
|
|
L3-24
|
Motor Accel Time @ Rated Torque
|
Set the motor acceleration time to the maximum frequency at the motor rated torque.
|
-
|
x
|
-
|
-
|
|
L3-25
|
Load Inertia Ratio
|
Sets the ratio between motor inertia and machine inertia.
|
-
|
x 3
|
-
|
-
|