YASKAWA L1000A Technical Manual page 210

5.8 L: Protection Functions
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L6-01, L6-04: Torque Detection Selection 1, 2
The torque detection function is triggered when the current or torque exceeds the levels set in L6-02 and L6-05 for longer
than the time set in L6-03 and L6-06. L6-01 and L6-04 select the conditions for detection and the operation that follows.
No.
L6-01
L6-04
Setting 0: Disabled
Setting 1: oL3, oL4 at speed agree (Alarm)
Overtorque detection is active only when the output speed is equal to the speed reference, i.e., no detection during
acceleration and deceleration. The operation continues after detection and an oL3/oL4 alarm is triggered.
Setting 2: oL3, oL4 at run (Alarm)
Overtorque detection works as long as the Up/Down command is active. The operation continues after detection and an
oL3 or oL4 alarm is triggered.
Setting 3: oL3, oL4 at speed agree (Fault)
Overtorque detection is active only when the output speed is equal to the speed reference, i.e., no detection during
acceleration and deceleration. The operation is stopped and an oL3 or oL4 fault is triggered.
Setting 4: oL3, oL4 at run (Fault)
Overtorque detection works as long as a Up/Down command is active. Operation stops and an oL3 or oL4 fault is
triggered.
Setting 5: UL3, UL4 at speed agree (Alarm)
Undertorque detection is active only when the output speed is equal to the speed reference, i.e., no detection during
acceleration and deceleration. The operation continues after detection and an oL3 or oL4 alarm is triggered.
Setting 6: UL3, UL4 at run (Alarm)
Undertorque detection works as long as the Up/Down command is active. The operation continues after detection and an
oL3 or oL4 alarm is triggered.
Setting 7: UL3, UL4 at speed agree (Fault)
Undertorque detection is active only when the output speed is equal to the speed reference, i.e., no detection during
acceleration and deceleration. The operation is stopped and an oL3 or oL4 fault is triggered.
Setting 8: UL3, UL4 at run (Fault)
Undertorque detection works as long as a Up/Down command is active. Operation stops and an oL3 or oL4 fault is
triggered.
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L6-02, L6-05: Torque Detection Level 1, 2
These parameters set the detection levels for the torque detection functions 1 and 2. In V/f control mode, these levels are
set as a percentage of the drive rated output current, while in vector control modes these levels are set as a percentage of
the motor rated torque.
No.
L6-02
L6-05
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L6-03, L6-06: Torque Detection Time 1, 2
These parameters determine the time required to trigger an alarm or fault after exceeding the levels in L6-02 and L6-05.
No.
L6-03
L6-06
210
Name
Torque Detection Selection 1
Torque Detection Selection 2
Name
Torque Detection Level 1
Torque Detection Level 2
Name
Torque Detection Time 1
Torque Detection Time 2
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Setting Range
0 to 8
0 to 8
Setting Range
0 to 300%
0 to 300%
Setting Range
0.0 to 10.0 s
0.0 to 10.0 s
Default
0
0
Default
150%
150%
Default
0.1 s
0.1 s