YASKAWA GA800 Maintenance & Troubleshooting page 228

3.11 L: Protection Functions
No.
Name
(Hex.)
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
L3-22 PM Stall Prevention Decel
Time
(04F9)
L3-23 Stall P Reduction at
Constant HP
(04FD)
L3-24 Motor Accel Time @ Rated
Torque
(046E)
Expert
L3-25 Load Inertia Ratio
(046F)
Expert
L3-26 Additional DC Bus
Capacitors
(0455)
Expert
L3-27 Stall Prevention Detection
Time
(0456)
L3-34 Torque Limit Delay Time
(016F)
Expert
L3-35 Speed Agree Width for Auto
Decel
(0747)
Expert
L3-36 Current Suppression
Gain@Accel
(11D0)
L3-37 Current Limit P Gain @
Accel
(11D1)
Expert
L3-38 Current Limit I Time @
Accel
(11D2)
Expert
228
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.
V/f CL-V/f OLV CLV AOLV
Sets the proportional gain to calculate acceleration and deceleration rates.
V/f CL-V/f OLV CLV AOLV
Sets the momentary deceleration time that the drive will use when it tries to accelerate a PM motor
and detected motor stalls. This function is applicable when L3-01 = 1 [Stall Prevention during Accel
= Enabled].
V/f CL-V/f OLV CLV AOLV
Sets the function to automatically decrease the Stall Prevention Level during Run for Constant Horse
Power (CHP) part of the speed range.
0 : Disabled
1 : Enabled
V/f CL-V/f OLV CLV AOLV
Sets the motor acceleration time to reach the maximum frequency at the motor rated torque for
stopped single-drive motors.
V/f CL-V/f OLV CLV AOLV
Sets the ratio between motor inertia and machine inertia.
V/f CL-V/f OLV CLV AOLV
Sets the capacity for external main circuit capacitors. Usually it is not necessary to change this
setting. Sets this parameter when you use the KEB Ride-Thru function.
V/f CL-V/f OLV CLV AOLV
Sets a delay time between reaching the Stall Prevention level and starting the Stall Prevention
function.
V/f CL-V/f OLV CLV AOLV
Sets the filter time constant that returns the torque limit to its initial value when KEB operation
operates in Single Drive KEB Ride-Thru mode.
V/f CL-V/f OLV CLV AOLV
Sets the width for speed agreement when L3-04 = 2 [Stall Prevention during Decel = Intelligent
(Ignore Decel Ramp)]. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the gain to suppress current and motor speed hunting during operation when L3-01 = 3 [Stall
Prevention during Accel = Current Limit Method]. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Suppresses current hunting during acceleration. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Suppresses current hunting and overshooting that occurs when the drive stalls during acceleration.
Usually it is not necessary to change this setting.
Description
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
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
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
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
Default
(Range)
Determined by C6-01 and
L8-38
(5 - 150%)
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)
0.0 s
(0.0 - 6000.0 s)
0
(0, 1)
Determined by o2-04, C6-
01, E2-11, and E5-01
(0.001 - 10.000 s)
1.0
(0.1 - 1000.0)
0 μF
(0 to 65000 μF)
50 ms
(0 - 5000 ms)
Determined by A1-02
(0.000 - 1.000 s)
0.00 Hz
(0.00 - 1.00 Hz)
Determined by A1-02
(0.0 - 100.0)
5 ms
(0 - 100 ms)
10.0
(0.0 - 100.0)