L6: Torque Detection - YASKAWA L1000A Technical Manual

■
L5-04: Fault Reset Interval Time
Sets a time interval that must pass before another reset attempt can be made. A setting of 0.0 essentially disables this
parameter.
No.
L5-04
■
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-
as shown below to indicate the underload or overload condition to an external device:
NOTICE: Damage to Equipment. Use the 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 5.37 and Figure 5.38
Figure 5.37
Torque detection 1 (NO)
Torque detection 2 (NO)
Figure 5.38
Torque detection 1 (NO)
Torque detection 2 (NO)
Note: 1. The torque detection function uses a hysteresis of 10% of the drive rated output current and motor rated torque.
2. In V/f, the level is set as a percentage of the drive rated output current. In OLV, CLV, and CLV/PM, it is set as a percentage of the
motor rated torque.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Name
Fault Reset Interval Time
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
L6-03/06
or
Figure 5.37 Overtorque Detection Operation
Motor current / torque
L6-02/05
L6-03/06
or
ON
Figure 5.38 Undertorque Detection Operation
parameters. Program the digital outputs
Description
10 % hysteresis 10 % hysteresis
L6-03/06
ON
ON
10 % hysteresis
L6-03/06
5.8 L: Protection Functions
Setting Range Default
0.5 to 600.0 s 10.0 s
Setting Range Default
0 or 1
common_TMonly
common_T
Monly
ON
0
5
209