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