Festo Рабочие компоненты для VTIA, ISO 15407-2 - Handbuch (Seite 45)

VABF-S4-1-V2B1…
Festo – VABF-S4-1-V2B1…-D2 – 1212a English 45
Vacuum Ejection
Fig. 3 Function
2.1 Operating mode of the air-saving function (LS)
If the desired threshold value 1 ( Fig. 4 “Operating mode of the air-saving function”) is reached for
the vacuum, vacuum generation is automatically switched off. Non-return valves prevent the reduction
of the vacuum. Nonetheless, leakage (e. g. rough workpiece surfaces) will slowly reduce the vacuum.
If the pressure drops below the set threshold value 2 vacuum generation is switched on automatically.
A vacuum is generated until the set threshold value 1 is reached again.