L3: Stall Prevention - YASKAWA GA500 Maintenance & Troubleshooting

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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 Sets the function to enable and disable 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
L3-21 OVSuppression Accel/Decel
P Gain
(0466)
Expert
YASKAWA TOEPYAIGA5001A GA500 DRIVE MAINTENANCE & TROUBLESHOOTING
Sets the method of the Stall Prevention During Acceleration.
0 : Disable
1 : Enabled
2 : Intelligent (Ignore Accel Ramp)
3 : Current Limit Acceleration
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]
Sets the lower limit for the stall prevention level used in the constant output range as a percentage of
the drive rated output current.
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
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)
Sets the output current level at which the Stall Prevention function is enabled during run when the
drive rated output current is 100%.
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 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]
Sets the overvoltage suppression function.
0 : Disabled
1 : Enabled
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.
Sets the proportional gain used to control the DC bus voltage.
Sets the proportional gain to calculate acceleration and deceleration rates.
3.11 L: Protection Functions
Description
Default
(Range)
1
(0 - 3)
Determined by C6-01
(0 - 150%)
50%
(0 - 100%)
1
(Determined by A1-02)
2
(0 - Determined by A1-02)
Determined by C6-01
(5 - 150%)
3
0
(0, 1)
200 V Class: 375 V,
400 V Class: 750 V
(200 V Class: 150 to 400 V,
400 V Class: 300 to 800 V)
Determined by A1-02
(0.00 - 5.00)
Determined by A1-02
(0.10 - 10.00)
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