Parameter List
10
10.11 L: Protection Functions
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 571
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L3-06
(0494)
Stall Prevent Level
during Run
Sets the current level that starts Stall Prevention during run. A
setting of 100% is equal to the drive rated current.
Note:
This parameter is applicable if L3-05 = 1, 2 [Stall Prevention
during RUN = Deceleration Time 1 (C1-02), Deceleration Time
2 (C1-04)].
Determined by C6-
01 and L8-38
(30 - 150%)
960
L3-11
(04C7)
Overvoltage
Suppression Select
Sets the overvoltage suppression function.
0 : Disabled
1 : Enabled
0
(0, 1)
961
L3-17
(0462)
DC Bus Regulation
Level
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.
200 V Class: 375
V, 400 V Class:
750 V
(200 V Class: 150 -
400 V, 400 V
Class: 300 - 800 V)
961
L3-20
(0465)
Expert
DC Bus Voltage
Adjustment Gain
Sets the proportional gain used to control the DC bus voltage.
Determined by A1-
02
(0.00 - 5.00)
961
L3-21
(0466)
Expert
OVSuppression
Accel/Decel P
Gain
Sets the proportional gain to calculate acceleration and deceleration
rates.
Determined by A1-
02
(0.10 - 10.00)
962
L3-22
(04F9)
PM Stall
Prevention Decel
Time
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 Prevent Select
duringAccel = General Purpose].
0.0 s
(0.0 - 6000.0 s)
962
L3-23
(04FD)
Stall P Reduction
at Constant HP
Sets the function to automatically decrease the Stall Prevention
Level during Run for constant output ranges.
0 : Use L3-06 for Entire Speed Range
1 : Automatic Reduction @ CHP Region
0
(0, 1)
962
L3-24
(046E)
Expert
Motor Accel Time
@ Rated Torque
Sets the motor acceleration time to reach the maximum frequency at
the motor rated torque for stopped single-drive motors.
Determined by o2-
04, C6-01, E2-11,
and E5-01
(0.001 - 10.000 s)
962
L3-25
(046F)
Expert
Load Inertia Ratio
Sets the ratio between motor inertia and machine inertia.
1.0
(1.0 - 1000.0)
963
L3-26
(0455)
Expert
Additional DC Bus
Capacitors
Sets the capacity for external main circuit capacitors. Sets this
parameter when you use the KEB Ride-Thru function. Usually it is
not necessary to change this setting.
0 μF
(0 to 65000 μF)
963
L3-27
(0456)
Stall Prevention
Detection Time
Sets a delay time between reaching the Stall Prevention level and
starting the Stall Prevention function.
50 ms
(0 - 5000 ms)
964
L3-34
(016F)
Expert
Torque Limit
Delay Time
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.
Determined by A1-
02
(0.000 - 1.000 s)
964
L3-35
(0747)
Expert
Speed Agree Width
for Auto Decel
Sets the width for speed agreement when L3-04 = 2 [Decel Stall
Prevention Selection = Automatic Decel Reduction]. Usually it is
not necessary to change this setting.
0.00 Hz
(0.00 - 1.00 Hz)
964
L3-36
(11D0)
Current
Suppression
Gain@Accel
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.
Determined by A1-
02
(0.0 - 100.0)
964
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