Parameter Details
12
12.9 L: Protection Functions
YASKAWA SIEPC71061753C GA500 Technical Manual 715
■ L3-26: Additional DC Bus Capacitors
No.
(Hex.)
Name Description
Default
(Range)
L3-26
(0455)
Expert
Additional DC Bus
Capacitors
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.
0 μF
(0 to 65000 μF)
■ L3-27: Stall Prevention Detection Time
No.
(Hex.)
Name Description
Default
(Range)
L3-27
(0456)
Stall Prevention Detection
Time
Sets a delay time between reaching the Stall Prevention level and starting the Stall Prevention
function.
60 ms
(0 - 5000 ms)
■ L3-34: Torque Limit Delay Time
No.
(Hex.)
Name Description
Default
(Range)
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)
When vibration occurs during operation of Single Drive KEB Ride-Thru 2, increase this parameter in 0.010-unit
increments.
Note:
The Single Drive KEB Ride-Thru 2 mode operates when L2-29 = 1 [KEB Method Selection = Single Drive KEB Ride-Thru 2] and H1-
xx = 7A or 7B [Terminal Sx Function Selection = KEB Ride-Thru 2 (N.C./N.O.)].
■ L3-35: Speed Agree Width for Auto Decel
No.
(Hex.)
Name Description
Default
(Range)
L3-35
(0747)
Expert
Speed Agree Width for
Auto Decel
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.
0.00 Hz
(0.00 - 1.00 Hz)
Set this parameter when hunting occurs while you use a frequency reference through an analog input.
■ L3-36: Current Suppression Gain@Accel
No.
(Hex.)
Name Description
Default
(Range)
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)
If there is vibration in the output current during acceleration, increase the setting value.
Note:
Set L3-01 = 3 [Stall Prevention during Accel = Current Limit Method] to enable this function.
■ L3-37: Current Limit P Gain @Accel
No.
(Hex.)
Name Description
Default
(Range)
L3-37
(11D1)
Expert
Current Limit P Gain
@Accel
Suppresses current hunting during acceleration. Usually it is not necessary to change this setting.
5 ms
(0 - 100 ms)
Note:
Set L3-01 = 3 [Stall Prevention during Accel = Current Limit Acceleration] to enable this function.
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