YASKAWA HV600 Manual page 376

2.9 L: Protection Functions
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 problems in the application.
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Parameter Setting
You can individually set the two overtorque/undertorque detection functions with the drive. Use the information in
Table 2.61 to set the parameters.
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 these values to set the overtorque/undertorque detection level:
• In V/f, OLV/PM: The current level (100% of the drive rated output current)
• In EZOLV: The motor torque (100% of the motor rated torque)
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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:
L6-03:
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Table 2.61 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.: Deactivated when detected
L6-01
*2
L6-02
*3
Analog Input Terminal
H3-xx = 7
L6-03
Figure 2.102 Time Chart for Overtorque Detection
*1
H2-01, H2-02, and H2-03 = 18
N.O.: Activated when detected
H2-01, H2-02, and H2-03 = 19
N.C.: Deactivated when detected
L6-04
L6-05
-
L6-06
L6-05:
L6-06:
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
Overtorque/Undertorque Detection 2