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ID : 3459
HandMoveVH
Function
To start vacuum or blower operation of an electric vacuum generator.
This command is available in Ver.2.8.* or higher.
Syntax
HandMoveVH Vacuum pressure, Motion Direction[, Vacuum detection threshold value]
Guaranteed Entry
- Vacuum pressure
- Specify the vacuum pressure by integer type data. (％)
- Motion Direction
- Specify the motion direction by integer type data. To specify the vacuum direction, enter True or other than 0. To specify the blower direction, enter False or 0.
- Vacuum detection threshold value
- Specify the threshold value to determine if a workpiece is gripped with a vacuum generator by double precision real number type data. (kPa)
Description
If the specification of the motion direction is "vacuum", the pump rotates the direction for air intake.
If the specification of the motion direction is "blower", the pump rotates the direction for air expelling.
When in vacuum operation, the negative pressure occurs. Therefore, the vacuum of a workpiece is detected when the pressure sensor's value is lower than the threshold value.
If this option is omitted, the detection threshold value is determined by the following priority order.
- Threshold value specified by HandSetDetectThreshold command.
- Default threshold value specified in the hand window (As the threshold value is 0 in the factory default setting, the vacuum detection threshold value is automatically set according to the vacuum pressure.)
Related Terms
Attention
During an electric vacuum generator operation, if HandMoveVH or HandChuck is executed, the electric vacuum generator will automatically stops its operation and resumes the motion. Please note that when a workpiece is gripped, the workpiece will fall.
Example
'!TITLE "Vacuum operation of electric vacuum generator"
' Run an electric vacuum generator with preset vacuum pressure.
Sub Sample_HandMoveVH
' With an electric vacuum generator, perform a vacuum operation with 80% of vacuum pressure.
HandMoveVH 80, True
End SubID : 3459