L6: Torque Detection - YASKAWA L1000A Technical Manual

5.8 L: Protection Functions
The number of fault reset is reset to zero when:
• The drive operates normally for ten minutes following a fault reset.
• A fault is cleared manually after protective functions are triggered.
• The power supply is cycled.
No.
L5-01
L5-02: Fault Output Operation during Auto Reset
■
Determines if a fault output is triggered (H2- = E) when the drive attempts to reset.
No.
L5-02
Setting 0: No fault output
Setting 1: Fault output is set
L5-06: Undervoltage Fault Reset Selection
■
Determines whether a limit should be placed on the number of reset attempts after a Uv1 fault.
No.
L5-06
Setting 0: Restrict auto-reset attempts to L5-01 after Uv1
Setting 1: No limit on auto-reset attempts after Uv1

◆ L6: Torque Detection

The drive provides two independent torque detection functions that trigger an alarm or fault signal when the load is too
heavy (oL), or suddenly drops (UL). These functions are set up using the L6- parameters. Program the digital outputs
as shown below to indicate the underload or overload condition to an external device.
NOTICE: Damage to Equipment. Use the Torque Detection function of the drive to notify the PLC of potential overcurrent or overload
situations at the load prior to a drive overload fault. Failure to comply may cause the drive to fault with a coasting motor and potentially
damage equipment.
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.
H2-01 through H2-05 Setting
B
18
Figure 5.40 and Figure 5.41
Figure 5.40
232
Parameter Name
Number of Auto Reset Attempts
Parameter Name
Fault Output Operation during Auto Reset
Parameter Name
Undervoltage Fault Reset Selection
Torque detection 1, N.O. (output closes when overload or underload is detected)
Torque detection 2, N.O. (output close when overload or underload is detected)
show the function of overtorque and undertorque detection.
Motor current / torque
L6-02/05
Torque detection 1 (NO)
or
Torque detection 2 (NO)
Figure 5.40 Overtorque Detection Operation
Description
10% hysteresis
L6-03/06
L6-03/06
ON
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Setting Range
0 to 10 Times
Setting Range
0 or 1
Setting Range
0 or 1
common_TMonly
10% hysteresis
ON
Default
0 Time
Default
0
Default
0