YASKAWA V1000 Series Installation & Start-Up Manual page 353

No. Name
OV Suppression
L3-11
Function Selection
Overvoltage
L3-17 Suppression and Stall
Prevention Desired
<24>
DC Bus Voltage
Main Power Circuit
L3-20 Voltage Adjustment
Gain
Accel/Decel Rate
L3-21
Calculation Gain
Deceleration Time at
L3-22 Stall Prevention
during Acceleration
Automatic Reduction
Selection for Stall
L3-23
Prevention during
Run
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Description
Enables or disables OV suppression function,
which allows the drive to change the output
frequency as the load changes, thus preventing
an OV fault.
0: Disabled
1: Enabled
Note: The frequency reference and motor
speed diverge as the regenerative energy
begins to flow back into the DC bus and
triggers the OV suppression function. Disable
this function when using a braking resistor.
Sets the desired value for the DC bus voltage
during overvoltage suppression and stall
prevention during deceleration. Enabled only
when L3-04 = 2.
Sets the proportional gain used by KEB, Stall
prevention and overvoltage suppression.
If OV or UV1 occurs at the beginning of KEB
deceleration, slowly increase this setting by
0.1.
Sets the proportional gain used to calculate the
deceleration rate during KEB, OV suppression
function and stall prevention during
deceleration (L3-04 = 2).
This parameter does not typically require
adjustment. Increase the value in steps of 1.0 if
overcurrent and overvoltage occur.
Sets the deceleration time used for stall
prevention during acceleration in Open Loop
Vector control for PM motors.
When set to 0, the drive decelerates at the
normal deceleration time.
0: Sets the stall prevention level throughout the
entire frequency range to the value in
parameter L3-06.
1: Automatically lowers the stall prevention
level in the constant output range. The lower
limit value is 40% of L3-06.
B.2 Parameter Table
Control
Mode
Range Def. Addr.
O
V/ P
Hex
L
f M
V
0, 1 0 A A - 4C7
370
150 to
V A A A 462
400 V
<9>
0.00 to
1.00 A A A 465
5.00
0.00 to
1.00 A A A 466
200.00
0.0 to
0.0 s − − A 4F9
6000.0
A A Α 4FD
0, 1 0
Pg.
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B
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