YASKAWA T1000V, Техническое руководство

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5.8 L: Protection Functions
198 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Figure 5.73
Figure 5.73 Overtorque Detection Operation
Figure 5.74
Figure 5.74 Undertorque Detection Operation
Note: 1. The torque detection function uses a hysteresis of 10% of the drive rated output current/motor rated torque.
2. In V/f Control and Open Loop Vector Control for PM, the level is set as a percentage of the drive rated output current. In Open Loop
Vector, it is set as a percentage of the motor rated torque.
Note: When overtorque occurs in the application, the drive may stop due to overcurrent (oC) or overload (oL1). To prevent this, an
overload situation should be indicated to the controller before oC or oL1 occur in the drive. Use the torque detection for this
purpose. Use undertorque detection to discover application problems like a torn belt, a pump shutting off, or other similar
trouble.
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L6-01, L6-04: Torque Detection Selection 1, 2
The torque detection function is triggered when the current/torque exceeds the levels set in parameter L6-02 or L6-05 for
longer than the time set in L6-03 or L6-06. The parameters L6-01 or L6-04 select the detection condition and the
operation at detection.
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 detection and an oL3/oL4 alarm is triggered.
Setting 2: oL3/oL4 at Run - Alarm
Overtorque detection works whenever a Run command is active. The operation continues after detection and an oL3/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 frequency reference, i.e., no detection during
acceleration and deceleration. The operation is stopped and an oL3/oL4 fault is triggered.
Setting 4: oL3/oL4 at Run - Fault
Overtorque detection works whenever a Run command is active. The operation is stopped and an oL3/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 frequency reference, i.e., no detection during
acceleration and deceleration. The operation continues after detection and a UL3/UL4 alarm is triggered.
No. Name Setting Range Default
L6-01 Torque Detection Selection 1 0 to 8 0
L6-04 Torque Detection Selection 2 0 to 8 0
Motor current / torque
L6-02 or L6-05
10 % hysteresis
Torque detection 1 (NO)
or
Torque detection 2 (NO)
L6-03 or L6-06
ON
L6-03 or L6-06
10 % hysteresis
ON
Motor current / torque
L6-02 or L6-05
10 % hysteresis
Torque detection 1 (NO)
or
Torque detection 2 (NO)
L6-03 or L6-06
ON
L6-03 or L6-06
ON