L3: Stall Prevention - YASKAWA AC Drive-A1000 Technical Manual

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L3: Stall Prevention

OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
No.
(Addr. Name
Hex)
L3-01 Stall Prevention Selection
(48F) during Acceleration
L3-02 Stall Prevention Level
(490) during Acceleration
L3-03 Stall Prevention Limit
(491) during Acceleration
L3-04 Stall Prevention Selection
(492) during Deceleration
L3-05 Stall Prevention Selection
(493) during Run
L3-06 Stall Prevention Level
(494) during Run
L3-11 Overvoltage Suppression
(4C7) Function Selection
Target DC Bus Voltage for
L3-17
Overvoltage Suppression
(462)
and Stall Prevention
L3-20 DC Bus Voltage Adjustment
(465) Gain
L3-21 Accel/Decel Rate
(466) Calculation Gain
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
V/f V/f V/f w PG V/f w PG
OLV/PM OLV/PM AOLV/PM CLV/PM
0: Disabled.
1: General purpose. Acceleration is paused as long as the current is above the
L3-02 setting.
2: Intelligent. Accelerate in the shortest possible time without exceeding the
L3-02 level.
Note: Setting 2 is not available when using OLV/PM.
V/f V/f V/f w PG V/f w PG
OLV/PM OLV/PM AOLV/PM CLV/PM
Used when L3-01 = 1 or 2. 100% is equal to the drive rated current.
V/f V/f V/f w PG V/f w PG
OLV/PM OLV/PM AOLV/PM CLV/PM
Sets Stall Prevention lower limit during acceleration when operating in the
constant power range. Set as a percentage of drive rated current.
All Modes
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 bus voltage.
V/f V/f V/f V/f V/f w PG V/f w PG V/f w PG V/f w PG
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
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.
V/f V/f V/f V/f V/f w PG V/f w PG V/f w PG V/f w PG
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
Enabled when L3-05 is set to 1 or 2. 100% is equal to the drive rated current.
All Modes
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
All Modes
Sets the desired value for the DC bus voltage during overvoltage suppression
and Stall Prevention during deceleration.
All Modes
Sets the proportional gain for KEB Ride-Thru, Stall Prevention, and
overvoltage suppression.
All Modes
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).
Description
OLV OLV CLV
OLV OLV CLV
OLV OLV CLV
OLV OLV CLV CLV
OLV OLV CLV CLV
B.10 L: Protection Function
Values Page
Default: 1
Range: 0 to 2
<1>
Default:
Min.: 0%
<1>
Max.: 150%
Default: 50%
Min.: 0
Max.: 100
Default: 1
<2>
Range: 0 to 5
Default: 1
Range: 0 to 2
<1>
Default:
Min.: 30%
<1>
Max.: 150%
Default: 0
Range: 0, 1
Default: 1064 Vdc
<3>
Min.: 431.3
Max.: 1150
<4>
Default:
Min.: 0.00
Max.: 5.00
Default: 1.00
Min.: 0.10
Max.: 10.00
250
251
251
252
253
253
254
254
254
B
255
429