Parameter List
1
1.11 L: Protection Functions
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING 83
No.
(Hex.)
Name Description
Default
(Range)
L2-30
(045E)
Expert
KEB Zero Speed Operation
Sets the operation when the output frequency decreases below the zero level (DC braking injection
starting frequency) during KEB deceleration when L2-01 = 3 to 5 [Power Loss Ride Through Select
= Kinetic Energy Backup: L2-02, Kinetic Energy Backup: CPU Power, or Kinetic Energy Backup:
DecelStop].
0 : Baseblock
1 : DC/SC Braking
0
(0, 1)
L2-31
(045D)
Expert
KEB Start Voltage Offset
Level
Sets the KEB start voltage offset.
Determined by A1-02
(200 V Class: 0 - 100 V,400
V Class: 0 - 200 V)
◆ L3: Stall Prevention
No.
(Hex.)
Name Description
Default
(Range)
L3-01
(048F)
Stall Prevention during
Accel
Sets the method of the Stall Prevention During Acceleration.
0 : Disable
1 : Enabled
2 : Intelligent (Ignore Accel Ramp)
3 : Current Limit Acceleration
1
(0 - 3)
L3-02
(0490)
Stall Prevent Level during
Accel
Sets the output current level at which the Stall Prevention function operates during acceleration
where the drive rated output current is 100%.
Note:
The upper limit to the setting range changes when the setting for C6-01 [Normal / Heavy Duty
Selection] changes.
• 150% when C6-01 = 0 [Heavy Duty Rating]
• 120% when C6-01 = 1 [Normal Duty Rating]
Determined by C6-01
(0 - 150%)
L3-03
(0491)
Stall Prevent Limit during
Accel
Sets the lower limit for the stall prevention level used in the constant output range as a percentage of
the drive rated output current.
50%
(0 - 100%)
L3-04
(0492)
Stall Prevention during
Decel
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 settings 1, 2, 4, 5, and 7 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 or 8 [AOLV/PM or EZOLV], the setting range is 0 or 1.
0 : No
1 : General Purpose
2 : Intelligent (Ignore Decel Ramp)
3 : General Purpose w/ DB resistor
4 : Overexcitation/High Flux
5 : Overexcitation/High Flux 2
7 : Overexcitation/High Flux 3
1
(Determined by A1-02)
L3-05
(0493)
Stall Prevention during RUN
Sets the function to enable and disable Stall Prevention During Run.
Note:
• An output frequency less than 6 Hz disables Stall Prevention during Run. The setting values of
L3-05 and L3-06 [Stall Prevent Level during Run] do not have an effect.
• The setting range changes when the A1-02 [Control Method Selection] value changes:
–A1-02 = 0, 5[V/f, OLV/PM] : 0 to 2
–A1-02 =8[EZOLV] : 0, 3
0 : No
1 : Deceleration Time 1 (C1-02)
2 : Deceleration Time 2 (C1-04)
3 : Intelligent (Ignore Decel Ramp)
2
(0 - Determined by A1-02)
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