Parameter List
11
11.11 L: Protection Functions
YASKAWA SIEPC71061737B GA800 Drive Technical Reference 553
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L6-10
(046A)
Mech Fatigue Detect
Delay Time
Sets the time for mechanical deterioration detection.
0.1 s
(0.0 - 10.0 s)
936
L6-11
(046B)
Mech Fatigue Hold Off
Time
Sets the time that the drive will start mechanical deterioration detection triggered by the
cumulative operation time of the drive.
0 h
(0 - 65535 h)
936
◆ L7: Torque Limit
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L7-01
(04A7)
RUN
Forward Torque Limit
Sets the torque limit value for forward motoring as a percentage, where motor rated torque
is the 100% value.
200%
(0 - 300%)
937
L7-02
(04A8)
RUN
Reverse Torque Limit
Sets the torque limit value for reversed motoring as a percentage, where motor rated torque
is the 100% value.
200%
(0 - 300%)
938
L7-03
(04A9)
RUN
Forward Regenerative
Trq Limit
Sets the torque limit value for forward regenerative conditions as a percentage of the motor
rated torque.
200%
(0 - 300%)
938
L7-04
(04AA)
RUN
Reverse Regenerative Trq
Limit
Sets the torque limit value for reversed regenerative conditions as a percentage of the
motor rated torque.
200%
(0 - 300%)
938
L7-06
(04AC)
Torque Limit Integral
Time
Sets the integral time constant for the torque limit function.
200 ms
(5 - 10000 ms)
938
L7-07
(04C9)
Torque Limit during
Accel/Decel
Sets the torque limit function during acceleration and deceleration.
0 : Proportional only
1 : Proportional & Integral control
0
(0, 1)
939
L7-16
(044D)
Torque Limit Process at
Start
Assigns a time filter to allow the torque limit to build at start.
0 : Disabled
1 : Enabled
1
(0, 1)
939
L7-35
(1B57)
Expert
Low Freq Regen Torque
Limit Lvl
Sets the torque limit used during low-speed regeneration. Usually it is not necessary to
change this setting.
50.0%
(0.0 - 200.0%)
939
L7-36
(1B58)
Expert
Regen Torque Limit
Derate Freq
Sets the frequency width at which L7-35 [Low Freq Regen Torque Limit Lvl] operates.
6.0 Hz
(0.0 - 30.0 Hz)
940
◆ L8: Drive Protection
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L8-01
(04AD)
3% ERF DB Resistor
Protection
Sets the function to enable braking resistor protection with a Yaskawa ERF series braking
resistor (3% ED) installed on the heatsink.
0 : Disabled
1 : Enabled
0
(0, 1)
940
L8-02
(04AE)
Overheat Alarm Level
Sets the oH detection level in temperature.
Determined by o2-04,
C6-01
(50 - 150 °C)
940
L8-03
(04AF)
Overheat Pre-Alarm
Selection
Sets the operation of drives when an oH alarm is detected.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop (Use C1-09)
3 : Alarm Only
4 : Operate at Reduced Speed (L8-19)
3
(0 - 4)
940
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