Festo Рабочие компоненты для VTIA, ISO 15407-2 - Handbuch (Seite 44)

VABF-S4-1-V2B1…
44 Festo – VABF-S4-1-V2B1…-D2 – 1212a English
2 Function and application
The vacuum module VABF-S4-1-V2B1… is intended to be used for generating a vacuum. The generated
vacuum and a suction gripper produce a force which is used to grip and transport a workpiece. The
supply of compressed air for vacuum generation is controlled by an integrated solenoid valve. The va-
cuum is generated by actuating solenoid coil 12. The reference value set at channel B for the generated
vacuum is monitored via an integrated pressure sensor. Vacuum generation reverts to a self-holding
phase after reaching the set reference value. The vacuum module controls the vacuum generation
process independently within the range of the set switching points (air-saving function). With the
integrated solenoid valve, an ejector pulse is activated and generated by activating coil 14 to release
the workpiece safely from the suction cup and to reduce the vacuum quickly. The length of the ejector
pulse can be influenced by the duration of the electrical pulse. The strength of the ejector pulse is influ-
enced by the adjustable flow control valve.