Yaskawa iQpump Micro User Manual
Page 256
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
7: High Flux Brake3
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.
7: Overexcitation Deceleration 3. Applies more braking power
than normal overexcitation deceleration. Yaskawa recommends
extra caution due to the heavy load on the motor.
Default: 0
Range: 0 to 4; 7
–
L3-05
(0493)
Stall Prevention
Selection during Run
StallP Run Sel
0: Disabled
1: Decel time
2: Decel time 2
0: Disabled. Drive runs at a set frequency. A heavy load may
cause speed loss.
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: 0
Range: 0 to 2
–
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>
–
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
<2> <3>
Min.: 150
Max.: 400
<3>
–
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: 1.00
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
–
L3-23
(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 L3-06 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:
<4> <5>
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
–
<1> Upper limit is dependent on parameter L8-38, Frequency Reduction Selection.
<2> Default setting is dependent on parameter E1-01, Input voltage Setting.
<3> Values shown are specific to 200 V class drives. Double the value for 400 V class drives.
<4> Parameter value changes automatically if E2-11 is manually changed or changed by Auto-Tuning.
<5> Default setting is dependent on parameter o2-04, Drive Model Selection.
B.8 L: Protection Function
256
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual