YASKAWA CIMR-VU BA0001 Technical Manual page 386

B.2 Parameter Table
No. Name
Stall Prevention Selection
L3-04
during Deceleration
Stall Prevention Selection
L3-05
during Run
Stall Prevention Level during
L3-06
Run
ov Suppression Function
L3-11
Selection
Overvoltage Suppression and
L3-17
Stall Prevention Desired DC
<5>
Bus Voltage
Main Power Circuit Voltage
L3-20
Adjustment Gain
Accel/Decel Rate Calculation
L3-21
Gain
Deceleration Time at Stall
L3-22 Prevention during
Acceleration
386
Description
When using a braking resistor, use setting "0". Setting "3" is
used in specific applications.
0: Disabled - The drive decelerates at the active deceleration
rate. If the load is too large or the deceleration time is too short,
an ov fault may occur.
1: General Purpose - The drive decelerates at the active
deceleration rate, but if the main circuit DC bus voltage
reaches the Stall Prevention level, deceleration will stop.
Deceleration will continue once the DC bus level drops below
the Stall Prevention level.
2: Intelligent - The active deceleration rate is ignored and the
drive decelerates as fast as possible without hitting ov fault
level. Range: C1-02 / 10.
3: Stall Prevention with Braking Resistor - Stall Prevention
during deceleration is enabled in coordination with dynamic
braking.
4: Overexcitation Deceleration - Decelerates with the flux
level determined by n3-13 (Overexcitation Gain).
7: Overexcitation Deceleration 3 - Applies more braking
power than normal overexcitation deceleration. Yaskawa
recommends extra caution due to the heavy load on the motor.
Selects the Stall Prevention method to use to prevent drive
faults during run.
0: Disabled - Drive runs a set frequency. A heavy load may
cause the drive to trip on an oC or oL fault.
1: Decel Time 1 - The drive will decelerate at Decel Time 1
(C1-02) if the output current exceeds the level set by L3-06.
Once the current level drops below the L3-06 level, the drive
will accelerate back to its frequency reference at the active
acceleration rate.
2: Decel Time 2 - Same as setting 1 except the drive decelerates
at Decel Time 2 (C1-04).
When output frequency is 6 Hz or less, Stall Prevention during
run is disabled regardless of the setting in L3-05.
Enabled when L3-05 is set to "1" or "2". 100% is equal to the
drive rated current.
Decrease the set value if stalling or excessive current occurs
with the default settings.
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 or L3-11 = 1.
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.
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Control
Mode
Range Def.
O
V/ P
L
f M
V
0 to 4; 7
1 S S S
<9>
0 to 2 1 A − A
<8>
30 to 150
A − A
<18>
<18>
0, 1 0 A A A
370 V
150 to 400
A A A
V <6>
0.00 to
1.00 A A A
5.00
0.00 to
1.00 A A A
200.00
0.0 to
0.0 s − − A
6000.0
Addr.
Pg.
Hex
492 223
493 224
494 225
4C7 225
462 226
465 226
466 226
4F9 223