YASKAWA A1000 Series Quick Start Manual page 302

B.8 L: Protection Function
No.
(Addr. Name
Hex)
Stall Prevention
L3-04
Selection during
(0492)
Deceleration
L3-05 Stall Prevention
(0493) Selection during Run
L3-06 Stall Prevention Level
(0494) during Run
Overvoltage
L3-11
Suppression Function
(04C7)
Selection
Target DC Bus Voltage
L3-17 for Overvoltage
(0462) Suppression and Stall
Prevention
L3-20 DC Bus Voltage
(0465) Adjustment Gain
L3-21 Accel/Decel Rate
(0466) Calculation Gain
Deceleration Time at
L3-22
Stall Prevention during
(04F9)
Acceleration
Automatic Reduction
L3-23
Selection for Stall
(04FD)
Prevention during Run
Motor Acceleration
L3-24
Time for Inertia
(046E)
Calculations
L3-25
Load Inertia Ratio
(046F)
L3-26 Additional DC Bus
(0455) Capacitors
L3-27 Stall Prevention
(0456) Detection Time
302
LCD Display
0: Disabled. Deceleration at the active deceleration rate. An ov
fault may occur.
1: General purpose. Deceleration is paused when the DC bus
voltage exceeds the Stall Prevention level.
2: Intelligent. Decelerate as fast as possible while avoiding ov
StallP Decel Sel
faults.
0: Disabled
3: Stall Prevention with braking resistor. Stall Prevention
1: General Purpose
during deceleration is enabled in coordination with dynamic
2: Intelligent
braking.
3: StallP +Resistor
4: Overexcitation Deceleration. Decelerates while increasing
4: High Flux Brake
the motor flux.
5: High Flux Brake2
5: Overexcitation Deceleration 2. Adjust the deceleration rate
according to the DC voltage.
Note:
0: Disabled. Drive runs at a set frequency. A heavy load may
StallP Run Sel cause stalling.
0: Disabled 1: Decel time 1. Uses the deceleration time set to C1-02 while
1: Decel Time 1 Stall Prevention is performed.
2: Decel Time 2 2: Decel time 2. Uses the deceleration time set to C1-04 while
Stall Prevention is performed.
Enabled when L3-05 is set to 1 or 2. 100% is equal to the drive
rated current.
StallP Run Level
Enables or disables the ov suppression function, which allows
OV Inhibit Sel the drive to change the output frequency as the load changes to
0: Disabled prevent an ov fault.
1: Enabled 0: Disabled
1: Enabled
Sets the desired value for the DC bus voltage during
overvoltage suppression and Stall Prevention during
DC Bus Reg Level
deceleration.
Sets the proportional gain for KEB Ride-Thru, Stall Prevention,
and overvoltage suppression.
DC Bus P Gain
Sets the proportional gain used to calculate the deceleration rate
Acc/Dec P Gain during KEB Ride-Thru, ov suppression function, and Stall
Prevention during deceleration (L3-04 = 2).
Sets the deceleration time used for Stall Prevention during
PM Acc Stall P T acceleration in OLV/PM.
0: Sets the Stall Prevention level set in L3-04 that is used
CHP Stall P Sel
throughout the entire frequency range.
0: Lv1 set in L3-06
1: Automatic Stall Prevention level reduction in the constant
1: Autom. Reduction
output range. The lower limit value is 40% of L3-06.
Sets the time needed to accelerate the uncoupled motor at rated
torque from stop to the maximum frequency.
Mtr Accel Time
Sets the ratio between the motor and machine inertia.
Load Inertia Rat
When DC bus capacitors have been added externally, be sure
ExtDC busCapSize to add those values to the internal capacitor table for proper DC
bus calculations.
Sets the time the current must exceed the Stall Prevention level
Stl Prev DetTime to activate Stall Prevention.
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Description
Setting 3 is not available in models 4A0930 and
4A1200.
Values Page
Default: 1
161
<2>
Range: 0 to 5
Default: 1
162
Range: 0 to 2
<1>
Default:
Min.: 30% 163
<1>
Max.: 150%
Default: 0
–
Range: 0, 1
Default: 375 Vdc
<3> <8>
–
Min.: 150
<8>
Max.: 400
<4>
Default:
–
Min.: 0.00
Max.: 5.00
Default: 1.00
Min.: 0.10 –
Max.: 10.00
Default: 0.0 s
Min.: 0.0 –
Max.: 6000.0
Default: 0
–
Range: 0, 1
<5> <6>
Default:
<7>
–
Min: 0.001 s
Max: 10.000 s
Default: 1.0
Min.: 1.0 –
Max.: 1000.0
Default: 0 μF
Min: 0 –
Max: 65000
Default: 50 ms
Min.: 0 –
Max.: 5000