YASKAWA A1000 HHP Programming Manual page 149

Note: 1. The torque detection function uses a hysteresis of 10% of the drive rated output current and motor rated torque.
2. In V/f, V/f w/PG and OLV/PM, the level is set as a percentage of the drive rated output current. In OLV, CLV, AOLV/PM and CLV/
PM, the level is set as a percentage of the motor rated torque.
n L6-01, L6-04: Torque Detection Selection 1, 2
The torque detection function is triggered when the current or torque exceed the levels set to L6-02 and L6-05 for longer than
the times set to 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 frequency reference (i.e., no detection during
acceleration and deceleration). The operation continues after detecting overtorque and triggering an oL3/oL4 alarm.
Setting 2: oL3, oL4 at Run (Alarm)
Overtorque detection works as long as the Run command is active. The operation continues after detecting overtorque and
triggering an oL3/oL4 alarm.
Setting 3: oL3, oL4 at Speed Agree (Fault)
Overtorque detection is active only when the output speed is equal to the frequency reference, i.e., no detection during
acceleration and deceleration. The operation stops and triggers an oL3/oL4 fault.
Setting 4: oL3, oL4 at Run (Fault)
Overtorque detection works as long as a Run command is active. The operation stops and triggers an oL3/oL4 fault.
Setting 5: UL3, UL4 at Speed Agree (Alarm)
Undertorque detection is active only when the output speed is equal to the frequency reference, i.e., no detection during
acceleration and deceleration. The operation continues after detecting overtorque and triggering a UL3/UL4 alarm.
Setting 6: UL3, UL4 at Run (Alarm)
Undertorque detection works as long as the Run command is active. The operation continues after detecting overtorque and
triggering a UL3/UL4 alarm.
Setting 7: UL3, UL4 at Speed Agree (Fault)
Undertorque detection is active only when the output speed is equal to the frequency reference, i.e., no detection during
acceleration and deceleration. The operation stops and triggers a UL3/UL4 fault.
Setting 8: UL3, UL4 at Run (Fault)
Undertorque detection works as long as a Run command is active. The operation stops and triggers a UL3/UL4 fault.
n L6-02, L6-05: Torque Detection Level 1, 2
These parameters set the detection levels for torque detection functions 1 and 2. In V/f and OLV/PM control modes, these
levels are set as a percentage of the drive rated output current. In vector control modes, these levels are set as a percentage of
the motor rated torque.
When Mechanical Weakening detection is enabled (L6-08 ≠ 0), the level for L6-02 is set as a percentage of the drive rated
output current in all control modes.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Motor current / torque
L6-02/05
L6-03/06
Torque detection 1 (NO)
or
Torque detection 2 (NO)
Figure 1.103 Undertorque Detection Operation
Name
Torque Detection Selection 1
Torque Detection Selection 2
10 % hysteresis
L6-03/06
ON
Setting Range
1.8 L: Protection Functions
ON
Default
0 to 8 0
0 to 8 0
1
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