11.9 L: Protection Functions
258 YASKAWA SIEPYEULA5001C LA500 Technical Manual
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L6-04
(04A4)
Torque Detection
Selection 2
Sets the speed range that detects overtorque and undertorque and the operation of drives
(operation status) after detection.
0 : Disabled
1 : oL @ Speed Agree - Alarm only
2 : oL @ RUN - Alarm only
3 : oL @ Speed Agree - Fault
4 : oL @ RUN - Fault
5 : UL @ Speed Agree - Alarm only
6 : UL @ RUN - Alarm only
7 : UL @ Speed Agree - Fault
8 : UL @ RUN - Fault
0
(0 - 8)
336
L6-05
(04A5)
Torque Detection Level
2
Sets the detection level for Overtorque/Undertorque Detection 2. In V/f control, drive
rated output current = 100% value. In vector control, motor rated torque = 100% value.
150%
(0 - 300%)
337
L6-06
(04A6)
Torque Detection Time 2
Sets the detection time for Overtorque/Undertorque Detection 2.
0.1 s
(0.0 - 10.0 s)
337
◆ L7: Torque Limit
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L7-01
(04A7)
RUN
Expert
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%)
338
L7-02
(04A8)
RUN
Expert
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%)
338
L7-03
(04A9)
RUN
Expert
Forward Regenerative
Trq Limit
Sets the torque limit value for forward regenerative conditions as a percentage of the
motor rated torque.
200%
(0 - 300%)
338
L7-04
(04AA)
RUN
Expert
Reverse Regenerative
Trq Limit
Sets the torque limit value for reversed regenerative conditions as a percentage of the
motor rated torque.
200%
(0 - 300%)
338
L7-06
(04AC)
Expert
Torque Limit Integral
Time
Sets the integral time constant for the torque limit function.
200 ms
(5 - 10000 ms)
338
L7-07
(04C9)
Expert
Torque Limit during
Accel/Decel
Sets the torque limit function during acceleration and deceleration.
0 : Proportional only
1 : Proportional & Integral control
0
(0, 1)
338
L7-16
(044D)
Expert
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)
339
◆ L8: Drive Protection
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L8-02
(04AE)
Expert
Overheat Alarm Level
Sets the oH detection level in temperature.
Determined by o2-04
(50 - 130 °C)
339
L8-03
(04AF)
Expert
Overheat Pre-Alarm
Selection
Sets operation after the drive detects an oH alarm.
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)
339
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