The overtorque/undertorque detection function prevents damage to machinery and loads.
Overtorque is when there is too much load on the machine. If the motor current or output torque is at the overtorque detection level for the overtorque detection time, the drive will output an alarm and turn off the output.
Undertorque is when a load suddenly decreases. When the motor current or output torque is at the undertorque detection level for the undertorque detection time, the drive will output an alarm and turn off the output.
You can use the undertorque detection function to detect these conditions, for example:
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Machine belt cuts
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Unusual operation of the electromagnetic contactor on the drive output side
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Clogged output side air filters in fans and blowers
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Damage to blade tips and broken string
Note:
If there is oC [Overcurrent] or oL1 [Motor Overload], the drive can stop during overtorque conditions. Use torque detection to identify overload conditions before the drive detects oC or oL1 and stops. Use this function to detect issues that occur in the application.