L3: Stall Prevention - YASKAWA GA700 Technical Manual

10.11 L: Protection Function
No.
Name
(Hex.)
L2-30 KEB Zero Speed
Operation
(045E)
L2-31 KEB Start Voltage
Offset Level
(045D)
◆

L3: Stall Prevention

No.
Name
(Hex.)
L3-01 Stall Prevent Select
duringAccel
(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 Prevent Select
during Run
(0493)
468
Description
V/f CL-V/f OLV CLV AOLV
Selects the operation when the output frequency drops below the
zero level (DC braking injection starting frequency) during KEB
deceleration when L2-01 = 3 to 5 [Momentary Power Loss Ope
Select = KEB Mode, KEB Stop Mode, or KEB Decel to Stp].
0 : Baseblock
1 : DC/SC Braking
V/f CL-V/f OLV CLV AOLV
Configures the KEB start voltage offset.
Description
V/f CL-V/f OLV CLV AOLV
Selects the method of the Stall Prevention During Acceleration
function.
0 : Disabled
1 : General Purpose
2 : Automatic Decel Reduction
3 : ILim Mode
V/f CL-V/f OLV CLV AOLV
Sets the output current level used when the Stall Prevention function
is enabled during acceleration, as a percentage of the drive rated
output current.
Note:
The upper limit and default for this setting is determined by C6-
01 [Normal / Heavy Duty Selection] and L8-38 [Carrier
Frequency Reduction].
V/f CL-V/f OLV CLV AOLV
Sets the lower limit for the stall prevention level during acceleration
used for constant output ranges, as a percentage of the drive rated
output current.
V/f CL-V/f OLV CLV AOLV
Selects the type of Stall Prevention during deceleration.
Note:
Set L3-04 = 0, 3 [Disabled, General Purpose w/ DB resistor]
when using a dynamic braking option. Using a dynamic braking
option with another setting will give priority to the Stall
Prevention Function and the dynamic braking option will not
function.
0 : Disabled
1 : General Purpose
2 : Intelligent (Ignore Decel Ramp)
3 : General Purpose w/ DB resistor
4 : Overexcitation/High Flux
5 : Overexcitation/High Flux 2
V/f CL-V/f OLV CLV AOLV
Enables or disables the Stall Prevention During Run function.
Note:
The Stall Prevention during Run function is disabled regardless
of the setting of L3-05 and L3-06 [Stall Prevent Level during
Run] if the output frequency falls below 6 Hz.
0 : Disabled
1 : Decel Time 1
2 : Decel Time 2
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
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 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
Default
Ref.
(Range)
0 843
(0, 1)
Determined by A1- 843
02
(200 V Class: 0 -
100 V, 400 V
Class: 0 - 200 V)
Default
Ref.
(Range)
1 844
(0 to 3)
Determined by C6- 845
01 and L8-38
(0 - 150%)
50% 846
(0 - 100%)
1 846
(0 to Determined
by A1-05)
Determined by A1- 848
02
(0 to Determined
by A1-02)