L3: Stall Prevention - YASKAWA GA700 Series Technical Manual

11.11 L: Protection Functions
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L3: Stall Prevention

No.
Name
(Hex.)
L3-01 Stall Prevention during
Accel
(048F)
L3-02 Stall Prevent Level
during Accel
(0490)
L3-03 Stall Prevent Limit
during Accel
(0491)
L3-04 Stall Prevention during
Decel
(0492)
L3-05 Stall Prevention during
RUN
(0493)
L3-06 Stall Prevent Level
during Run
(0494)
L3-11 Overvoltage Suppression
Select
(04C7)
L3-17 DC Bus Regulation
Level
(0462)
L3-20 DC Bus Voltage
Adjustment Gain
(0465)
Expert
550
Description
V/f CL-V/f OLV CLV AOLV
Sets the method of the Stall Prevention During Acceleration.
0 : Disable
1 : Enabled
2 : Intelligent (Ignore Accel Ramp)
3 : Current Limit Acceleration
V/f CL-V/f OLV CLV AOLV
Sets the output current level to activate the Stall Prevention function during acceleration
as a percentage of the drive rated output current.
Note:
The upper limit of the setting range changes when C6-01 [Normal / Heavy Duty
Selection] changes.
• 150% when C6-01 = 0 [Heavy Duty Rating].
• 110% when C6-01 = 1 [Normal Duty Rating].
V/f CL-V/f OLV CLV AOLV
Sets the lower limit for the stall prevention level used in the constant output range as a
percentage of the drive rated output current.
V/f CL-V/f OLV CLV AOLV
Sets the method that the drive will use to prevent overvoltage faults when decelerating.
Note:
1. To connect a dynamic braking option (braking resistor or braking resistor unit)
to the drive, set this parameter to 0 or 3. Parameter values 1, 2, 4, and 5 will
enable Stall Prevention function during deceleration, and the dynamic braking
option will not function.
2. The setting range changes when the A1-02 [Control Method Selection] value
changes:
• When A1-02 = 5 [OLV/PM], the setting range is 0 to 2.
• When A1-02 = 6, 7, 8 [AOLV/PM, CLV/PM, EZOLV], the setting range is 0,
1.
0 : Disable
1 : General Purpose
2 : Intelligent (Ignore Accel Ramp)
3 : General Purpose w/ DB resistor
4 : Overexcitation/High Flux 1
5 : Overexcitation/High Flux 2
V/f CL-V/f OLV CLV AOLV
Sets the function to enable and disable Stall Prevention During Run.
Note:
1. An output frequency lower than 6 Hz will disable Stall Prevention during Run.
The L3-05 and L3-06 [Stall Prevent Level during Run] settings do not have an
effect.
2. The setting range changes when the A1-02 [Control Method] value changes:
• A1-02 = 0, 1, 5 [V/f, CL-V/f, OLV/PM]: 0 to 2
• A1-02 =8[EZOLV]: 0, 3
0 : Disabled
1 : Deceleration Time 1 (C1-02)
2 : Deceleration Time 2 (C1-04)
3 : Intelligent (Ignore Decel Ramp)
V/f CL-V/f OLV CLV AOLV
Sets the output current level to enable the Stall Prevention function during operation as
a percentage of the drive rated output current.
Note:
• This parameter is applicable when L3-05 = 1, 2 [Stall Prevention during RUN =
Deceleration Time 1 (C1-02), Deceleration Time 2 (C1-04)].
• The upper limit of the setting range changes when C6-01 [Normal / Heavy Duty
Selection] changes.
–150% when C6-01 = 0 [Heavy Duty Rating 1 (HD1) for Constant Torque
Applications].
–110% when C6-01 = 1 [Normal Duty Rating 1 (ND1) for Variable Torque
Applications].
V/f CL-V/f OLV CLV AOLV
Sets the overvoltage suppression function.
0 : Disabled
1 : Enabled
V/f CL-V/f OLV CLV AOLV
Sets the target value for the DC bus voltage when the overvoltage suppression function
and the Decel Stall Prevention function (Intelligent Stall Prevention) are active.
V/f CL-V/f OLV CLV AOLV
Sets the proportional gain used to control the DC bus voltage.
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061705H GA700 Series Technical Manual
Default
Ref.
(Range)
1 887
(0 - 3)
Determined by C6-01 889
and L8-38
(0 - 150%)
50% 889
(0 - 100%)
1 889
(Determined by A1-02)
Determined by A1-02 891
(0 - Determined by A1-
02)
Determined by C6-01 891
and L8-38
(5 - 150%)
0 892
(0, 1)
200 V Class: 375 V, 892
400 V Class: 750 V
(200 V Class: 150 to 400
V, 400 V Class: 300 to
800 V)
Determined by A1-02 892
(0.00 - 5.00)