YASKAWA HV600 Technical Reference page 337

Configuration Parameter
MFDO Function Select
• Terminals M1-M2
• Terminals M3-M4
• Terminals M5-M6
Detection conditions and selection of operation after
detection
Detection Level
Detection Time
*1 For UL6 [Underload or Belt Break Detected] detection, use the MFDO terminal set for H2-xx = 58 [UL6 Underload Detected].
*2 For UL6 detection, these parameters set the detection level:
• L6-02
• L6-13 [Motor Underload Curve Select]
• L6-14 [Motor Underload Level @ Min Freq]
*3 You can also use an analog input terminal to supply the torque detection level. To enable this function, set H3-xx = 7 [MFAI Function
Selection = Overtorque/Undertorque DetectLvl]. When you set L6-02 and H3-xx = 7, the analog input has priority and L6-02 is disabled.
You cannot use Overtorque/Undertorque Detection 2 to set the detection level for the analog input terminals.
Note:
The drive uses the current level (100% of the drive rated output current) to set the overtorque/undertorque detection level/
■
Time Chart for Detection of Overtorque/Undertorque/Underload
Overtorque Detection Time Chart
When you use Overtorque/Undertorque Detection 1, the drive detects overtorque if the motor current or motor torque
is at the detection level set in L6-02 [Torque Detection Level 1] for the time set in L6-03 [Torque Detection Time 1].
Parameter L6-01 [Torque Detection Selection 1] sets the operation after detection.
When you use Overtorque/Undertorque Detection 2, set L6-04 [Torque Detection Selection 2], L6-05 [Torque
Detection Level 2], and L6-06 [Torque Detection Time 2].
Use H2-01 to H2-03 [MFDO Function Selection] to set the terminal that outputs the alarm.
L6-02: Torque Detection Level 1
L6-03: Torque Detection Time 1
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.
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Table 5.47 Overtorque/Undertorque Detection Parameters
Overtorque/Undertorque Detection 1
H2-01, H2-02, and H2-03 = B
N.O.: Activated when detected
H2-01, H2-02, and H2-03 = 17
N.C.: Disactivated when detected
L6-01
*2
L6-02
*3
Analog Input Terminal
H3-xx = 7
L6-03
Figure 5.84 Time Chart for Overtorque Detection
Overtorque/Undertorque Detection 2
*1
H2-01, H2-02, and H2-03 = 18
N.O.: Activated when detected
H2-01, H2-02, and H2-03 = 19
N.C.: Disactivated when detected
L6-04
L6-05
-
L6-06
L6-05: Torque Detection Level 2
L6-06: Torque Detection Time 2
5.8 L: Protection Functions
5
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