YASKAWA HV600 Manual page 377

Note:
The drive applies a hysteresis of approximately 10% of the drive rated output current or the motor rated torque to the overtorque/
undertorque/underload detection function.
Undertorque Detection Time Chart
When you use Overtorque/Undertorque Detection 1, the drive detects undertorque if the motor current or motor
torque is less than or equal to the detection level set in L6-02 for the time set in L6-03. Parameter L6-01 sets the
operation after detection.
When you use Overtorque/Undertorque Detection 2, set the operation in L6-04, L6-05, and L6-06.
Use H2-01 to H2-03 [MFDO Function Selection] to set the terminal that outputs the alarm.
L6-02:
L6-03:
Note:
The drive applies a hysteresis of approximately 10% of the drive rated output current or the motor rated torque to the overtorque/
undertorque/underload detection function.
Underload Detection Time Chart
When L6-01 = 9 [UL6 @ Speed Agree - Alarm only] to 12 [UL6 @ RUN - Fault], the drive will detect underload if
the motor current or output torque is less than or equal to the detection level for the time set in L6-03.
Note:
The linear curve of L6-02, L6-13 [Motor Underload Curve Select], and L6-14 [Motor Underload Level @ Min Freq] sets the underload
detection level.
Use H2-01 to H2-03 [MFDO Function Selection] to set the terminal that outputs the alarm.
H2-xx = 58:
L6-03:
Figure 2.104 Time Chart for Underload Detection at Minimum Frequency
Note:
The drive applies a hysteresis of approximately 10% of the drive rated output current or the motor rated torque to the overtorque/
undertorque/underload detection function.
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
L6-05:
L6-06:
Figure 2.103 Time Chart for Undertorque Detection
L6-14:
2.9 L: Protection Functions
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