YASKAWA AC Drive-A1000 User Manual

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L3: Stall Prevention
OLV/PMOLV/PM AOLV/PMAOLV/PM CLV/PMCLV/PM
PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
No.
(Addr.
Hex)
Name Description Values Page
L3-01
(48F)
Stall Prevention Selection
during Acceleration
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG OLV
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.
Default: 1
Range: 0 to 2
250
L3-02
(490)
Stall Prevention Level
during Acceleration
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG OLV
Used when L3-01 = 1 or 2. 100% is equal to the drive rated current.
Default:
<1>
Min.: 0%
Max.: 150%
<1>
251
L3-03
(491)
Stall Prevention Limit
during Acceleration
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG OLV
Sets Stall Prevention lower limit during acceleration when operating in the
constant power range. Set as a percentage of drive rated current.
Default: 50%
Min.: 0
Max.: 100
251
L3-04
(492)
Stall Prevention Selection
during Deceleration
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.
Default: 1
Range: 0 to 5
<2>
252
L3-05
(493)
Stall Prevention Selection
during Run
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PGV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG
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: 1
Range: 0 to 2
253
L3-06
(494)
Stall Prevention Level
during Run
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PGV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG
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>
253
L3-11
(4C7)
Overvoltage Suppression
Function Selection
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
Default: 0
Range: 0, 1
254
L3-17
(462)
Target DC Bus Voltage for
Overvoltage Suppression
and Stall Prevention
All Modes
Sets the desired value for the DC bus voltage during overvoltage suppression
and Stall Prevention during deceleration.
Default: 1064 Vdc
<3>
Min.: 431.3
Max.: 1150
254
L3-20
(465)
DC Bus Voltage Adjustment
Gain
All Modes
Sets the proportional gain for KEB Ride-Thru, Stall Prevention, and
overvoltage suppression.
Default:
<4>
Min.: 0.00
Max.: 5.00
254
L3-21
(466)
Accel/Decel Rate
Calculation Gain
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).
Default: 1.00
Min.: 0.10
Max.: 10.00
255
B.10 L: Protection Function
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
429
B
Parameter List

YASKAWA AC Drive-A1000 Specifications

General

Brand	YASKAWA
Model	AC Drive-A1000
Category	Controller
Language	English