YASKAWA OYMC V1000, Programming Manual

Page: 344 / 408

A.2 Parameter Table
344 YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
L3-11
OV Suppression
Function Selection
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.
0, 1 0 A A A 4C7 204
L3-17
<24>
Overvoltage
Suppression and Stall
Prevention Desired
DC Bus Voltage Sets the desired value for the DC bus voltage
during overvoltage suppression and Stall
Prevention during deceleration. Enabled only
when L3-04 = 2 or L3-11 = 1.
150 to
400 V
370
V
<9>
A A A 462 204
L3-20
Main Power Circuit
Voltage Adjustment
Gain
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.
0.00 to
5.00
1.00 A A A 465 205
L3-21
Accel/Decel Rate
Calculation Gain
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.
0.00 to
200.00
1.00 A A A 466 205
L3-22
Deceleration Time at
Stall Prevention
during Acceleration
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.
0.0 to
6000.0
0.0 s
− −
A 4F9 200
L3-23
Automatic Reduction
Selection for Stall
Prevention during Run
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.
0, 1 0 A A
Α
4FD 203
L3-24
Motor Acceleration
Time for Inertia
Calculations
Sets the time needed to accelerate the
uncoupled motor at rated torque from stop to
the maximum frequency.
Setting the drive capacity to parameter o2-04 or
changing E2-11 will automatically set this
parameter for a 4-pole motor.
0.001 to
10.000
<10>
<51>
<57>
A A A 46E 206
No. Name Description Range Def.
Control
Mode
Addr.
Hex
Pg.
V/f
O
LV
P
M