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Contact

This is a skill for moving a target distance after reaching the teaching pose or stopping movement if an external force is sensed during Force Control movement. The contact skill requires force control in a specific direction, so it requires the Compliance Control by default.

  1. Recommended Default WCI: None

  2. Create Skill: TaskBuilder → No Add WCI (Skill Type: Basic)

  3. Optional Features: Approach pose and retract pose setting, Compliance Control, select stop method (force or distance)

  4. Confirm Condition:Save Teaching Pose

Default Motion Sequence

  1. Force Setting
    Move to Approach Pose → Move to Teaching Pose (position excluding Contact Margin) → Move with Force Control until External Force occur → Move to Retract Pose

  2. "Distance" Setting
    Move to Approach Pose → Move to Teaching Pose → Move Maximum Distance value with Force Control while checking External Force → Move to Retract Pose

Definition of Skill Screen

Item

Description

Default Value and Input Range

Basic Setting

Reference Pose

Teaching Pose

- This is a random position.

 

Task Setting

Select Task (Option)

Select Check Method (Force or Distance)

“Force”

[“Force”, ”Distance”]

Maximum Distance

Max Distance

- This is applied only with the Distance setting.

50 mm

[0 ~ 5000]

Wait Time

Standby time before/after move to teaching pose

0.5 s

[0 ~ 10000]

Task Velocity

This is the velocity from the approach pose to teaching pose.

100 mm/s

[0.001 ~ 8000]

Task Acceleration

This is the acceleration from the approach pose to teaching pose.

0.1 m/s2

[0.001 ~ 20]

Approach Pose Setting

(Option)

Approach Distance

Distance from the teaching pose in x, y and z directions

- The approach distance must be entered in a 1 x 3 array (i.e. [x, y, z]).

[0, 0, -100] mm

[Individually -1000 ~ 1000]

Velocity for App. Pose

This is the motion velocity to the approach pose.

250 mm/s

[0.001 ~ 8000]

Acceleration for App. Pose

This is the motion acceleration to the approach pose.

0.25 m/s2

[0.001 ~ 20]

Motion Time for App. Pose

This is the motion time to the approach pose.

- If a motion time of greater than 0 is entered, the Velocity/Acceleration values are ignored.

0 s

[0 ~ 10000]

Retract Pose Setting

(Option)

Retract Distance

Distance from the teaching pose in x, y and z directions

- The retract distance must be entered in a 1 x 3 array (i.e. [x, y, z]).

[0, 0, -100] mm

[Individually -1000 ~ 1000]

Velocity for Ret. Pose

This is the motion velocity to the retract pose.

100 mm/s

[0.001 ~ 8000]

Acceleration for Ret. Pose

This is the motion acceleration to the retract pose.

0.1 m/s2

[0.001 ~ 20]

Motion Time for Ret. Pose

This is the motion time to the retract pose.

- If a motion time of greater than 0 is entered, the Velocity/Acceleration values are ignored.

0 s

[0 ~ 10000]

Blending Radius for Ret. Pose

This is the blending radius connecting the movement between the teaching pose and the retract pose.

0 mm

[0 ~ 1000]

Compliance Control Setting

Compliance control (Option)

Select Compliance Control Status

False

[True, False]

Stiffness

Stiffness Setting

x=y=z= 3000 N/m

[0 ~ 20000]

rx=ry=rz= 200 Nm/rad

[0 ~ 1000]

Force Control Setting

Task Direction

Orientation setting during force control

- Orientation is based on Tool Coordinates.

Z

[X, Y, Z]

Contact Margin

Margin for contact sensing section setting

- The contact sensing section is configured by adding the +/- contact sensing margin from the teaching point.

3 mm

[0 ~ 100]

Desired Force

Target Force Value

- Target force must be greater than the sense value, and the absolute value must be greater than 10N(In the case of A series, there is no limit to the desired force value).

15 N

[-1200 ~ 1200]

Contact Force

This is the reference force for contact sensing.

  • If the contact force value is too small, the contact skill may malfunction and be recognized as contact before actual contact occurs.

  • Be careful when setting the Contact Force value to a value less than the default value.

10 N

[0 ~ 1200]

Timeout

This is the contact sensing time.

10 s

[0 ~ 10000]

  • If an A-series is not installed with FTS, the contact skill cannot be used.