YASKAWA HV600

9.11 L: Protection Functions
634 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
◆ L3: Stall Prevention
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L3-01
(048F)
Stall Prevention during
Accel
Sets the method of Stall Prevention During Acceleration.
0 : Disabled
1 : Enabled
2 : Intelligent (Ignore Decel Ramp)
1
(0 - 2)
322
L3-02
(0490)
Stall Prevent Level during
Accel
Sets the output current level to activate the Stall Prevention function during acceleration as
a percentage of the drive rated output current.
Determined by L8-38
(0 - 120%)
323
L3-03
(0491)
Stall Prevent Limit during
Accel
Sets the lower limit for the stall prevention level used in the constant output range as a
percentage of the drive rated output current.
50%
(0 - 100%)
323
L3-04
(0492)
Stall Prevention during
Decel
Sets the method that the drive will use to prevent overvoltage faults when decelerating.
0 : Disabled
1 : General Purpose
2 : Intelligent (Ignore Decel Ramp)
4 : Overexcitation/High Flux
1
(0 - 4)
324
L3-05
(0493)
Stall Prevention during
RUN
Sets the function to enable and disable Stall Prevention During Run.
Note:
An output frequency lower than 6 Hz will disable Stall Prevention during Run. The L3-
05 and L3-06 [Stall Prevent Level during Run] settings do not have an effect.
0 : Disabled
1 : Deceleration Time 1 (C1-02)
2 : Deceleration Time 2 (C1-04)
2
(0 - 2)
325
L3-06
(0494)
Stall Prevent Level during
Run
Sets the output current level to enable the Stall Prevention function during operation as a
percentage of the drive rated output current.
Note:
This parameter is applicable when L3-05 = 1, 2 [Stall Prevention during RUN =
Deceleration Time 1 (C1-02), Deceleration Time 2 (C1-04)].
Determined by L8-38
(5 - 120%)
325
L3-11
(04C7)
Overvoltage Suppression
Select
Sets the overvoltage suppression function.
0 : Disabled
1 : Enabled
0
(0, 1)
326
L3-17
(0462)
DC Bus Regulation Level Sets the target value for the DC bus voltage when the overvoltage suppression function and
the Decel Stall Prevention function (Intelligent Stall Prevention) are active.
208/240 V: 375 V,
480 V: 750 V
(208/240 V: 150 - 400 V,
480 V: 300 - 800 V)
326
L3-20
(0465)
Expert
DC Bus Voltage
Adjustment Gain
Sets the proportional gain used to control the DC bus voltage. 1.00
(0.00 - 5.00)
326
L3-21
(0466)
Expert
OVSuppression Accel/
Decel P Gain
Sets the proportional gain to calculate acceleration and deceleration rates. 1.00
(0.10 - 10.00)
327
L3-23
(04FD)
Stall P Reduction at
Constant HP
Sets the function to automatically decrease the Stall Prevention Level during Run for
constant output ranges.
0 : Use L3-06 for Entire Speed Range
1 : Automatic Reduction @ CHP Region
0
(0, 1)
327
L3-24
(046E)
Expert
Motor Accel Time @
Rated Torque
Sets the motor acceleration time to reach the maximum frequency at the motor rated torque
for stopped single-drive motors.
Determined by o2-04, E2-
11
(0.001 - 10.000 s)
327
L3-25
(046F)
Expert
Load Inertia Ratio Sets the ratio between motor inertia and machine inertia. 1.0
(0.1 - 1000.0)
328
L3-26
(0455)
Expert
Additional DC Bus
Capacitors
Sets the capacity for external main circuit capacitors. Usually it is not necessary to change
this setting.
0 μF
(0 to 65000 μF)
328
L3-27
(0456)
Stall Prevention
Detection Time
Sets a delay time between reaching the Stall Prevention level and starting the Stall
Prevention function.
50 ms
(0 - 5000 ms)
328
L3-35
(0747)
Expert
Speed Agree Width for
Auto Decel
Sets the width for speed agreement when L3-04 = 2 [Decel Stall Prevention Selection =
Automatic Decel Reduction]. Usually it is not necessary to change this setting.
0.00 Hz
(0.00 - 1.00 Hz)
328