
2.PREPARATIONS FOR OPERATION B-63943EN-1/02
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# 0 ABNT Unexpected disturbance torque detection function (for each axis) is
0: Disabled
1: Enabled
When using the unexpected disturbance torque detection alarm
function and estimated disturbance torque output function, enable the
unexpected disturbance torque detection function.
2050 Velocity control observer
[Input type] Parameter input
[Data type] Word axis
[Valid data range] 0 to 32767
Be sure to set this parameter to 3559.
When using the velocity loop observer (by setting bit 2 (OBEN) of
parameter No. 2003 to 1), set 956 in this parameter.
2051 Velocity control observer
[Input type] Parameter input
[Data type] Word axis
[Valid data range] 0 to 32767
Be sure to set this parameter to 3329.
When using the velocity loop observer (by setting bit 2 (OBEN) of
parameter No. 2003 to 1), set 510 in this parameter.
2103 Retraction distance upon the detection of an unexpected disturbance torque
[Input type] Parameter input
[Data type] Word axis
[Unit of data] Detection unit
[Valid data range] 0 to 32767
This parameter specifies the distance by which the tool is to be
retracted, by reversing the motor, if an unexpected disturbance torque
is detected.
When the motor is rotating at low speed, however, the tool may be
retracted too far. To prevent this, the motor is stopped, instead of
being reversed, while the specified feedrate is less than the value listed
in the table below.
When this parameter is set to value A, the detection of an unexpected
disturbance torque causes the tool to be retracted in the reverse
direction by the distance A, then stopped, if the specified feedrate is
equal to or greater than the value listed below.
Detection unit Feedrate
10 µm A / 0.8 mm/ min
1 µm A / 8 mm/ min
0.1 µm A / 80 mm/ min
0.01 µm A / 800 mm/ min
0.001 µm A / 8000 mm/ min
When this parameter is set to 0, the motor stops immediately upon the
detection of unexpected disturbance torque.