YASKAWA Z1000 User Manual page 300

B.8 L: Protection Function
No.
(Addr. Name
Hex)
L3-05 Stall Prevention
(493) Selection during Run
L3-06 Stall Prevention Level
(494) during Run
Overvoltage
L3-11
Suppression Function
(4C7)
Selection
Target DC Bus Voltage
L3-17 for Overvoltage
(462) Suppression and Stall
Prevention
L3-20 DC Bus Voltage
(465) Adjustment Gain
L3-21 Accel/Decel Rate
(466) Calculation Gain
Deceleration Time at
L3-22
Stall Prevention during
(4F9)
Acceleration
Automatic Reduction
L3-23
Selection for Stall
(4FD)
Prevention during Run
Motor Acceleration
L3-24
Time for Inertia
(46E)
Calculations
L3-25
Load Inertia Ratio
(46F)
L3-26 Additional DC Bus
(455) Capacitors
L3-27 Stall Prevention
(456) Detection Time
<1> Upper limit is dependent on parameter L8-38, Frequency Reduction Selection.
<2> The setting range is 0 to 2 in OLV/PM control mode.
<3> Default setting is dependent on parameter E1-01, Input voltage Setting.
<4> Default setting is determined by parameter A1-02, Control Mode Setting.
<5> Parameter value changes automatically if E2-11 is manually changed or changed by Auto-Tuning.
<6> Default setting is dependent on parameter o2-04, Drive Model Selection.
300
LCD Display
0: Disabled. Drive runs at a set frequency. A heavy load may
StallP Run Sel cause speed loss.
0: Disabled 1: Decel time 1. Uses the deceleration time set to C1-02 while
1: Decel time 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 deceleration.
DC Bus Reg Level
Determines the proportional gain used by overvoltage
suppression (L3-11 = 1), Single drive KEB 2 (L2-29 = 1), KEB
DC Bus P Gain Ride-Thru 2 (H1-oo = 7A or 7B), and Intelligent Stall
Prevention during Deceleration (L3-04 = 2) to control the DC
bus voltage in OLV/PM.
Sets the proportional gain used to calculate the deceleration rate
during KEB Ride-Thru, ov suppression function, and Stall
Acc/Dec P Gain
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.
OLV/PM OLV/PM
Mtr Accel Time
Sets the time needed to accelerate the uncoupled motor at rated
torque from stop to the maximum frequency.
OLV/PM OLV/PM
Load Inertia Rat
Sets the ratio between the motor and machine inertia.
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.
Description
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Values Page
Default: 1
–
Range: 0 to 2
<1>
Default:
Min.: 30% –
<1>
Max.: 150%
Default: 0
–
Range: 0, 1
Default: 1063.8
<3>
Vdc
–
Min.: 431.3
Max.: 1150.0
<4>
Default:
–
Min.: 0.00
Max.: 5.00
<4>
Default:
–
Min.: 0.00
Max.: 200.00
Default: 0.0 s
Min.: 0.0 –
Max.: 6000
Default: 0
–
Range: 0, 1
<5> <6>
Default:
–
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