Festo Рабочие компоненты для VTIA, ISO 15407-2 - Handbuch (Seite 52)

VABF-S4-1-V2B1…
52 Festo – VABF-S4-1-V2B1…-D2 – 1212a English
Setting the pressure sensor:
The pressure sensor setting for monitoring the vacuum depends on the application.
The vacuum module is preset at the factory (factory settings section 5
“ Quick commissioning with default settings”). These settings can be quickly adapted to the application
via the EDIT mode.
The vacuum module must be in the basic status (RUN mode).
• Define the desired switching behaviour of the switching outputs ( section 6.3 “EDIT mode”).
The workpiece must be held reliably against the suction gripper by the vacuum generated.
Reducing the vacuum:
An ejector pulse is generated by activating solenoid coil 14.
The vacuum connection on the manifold sub-base is ventilated. The workpiece detaches itself
from the suction gripper.
The intensity of the ejector pulse can be adjusted.
The intensity of the ejector pulse can be adjusted via the flow control screw 7
( Fig. 1 “Operating elements and ports”).
1. Screw the flow control screw 7 fully clockwise.
The ejector pulse channel is now closed. No ejector pulse is generated.
2. Unscrew the flow control screw until the required intensity of the ejector pulse is reached. The
length of the ejector pulse corresponds to the length of time solenoid coil 14 is activated.
3. Test the settings of the ejector pulse before commissioning.
Caution
An ejector pulse that is offset to the releasing procedure can result in the workpiece
being raised briefly by accident when releasing the suction cup.
The flow resistance in large suction cups can result in a device-independent build-up of
a vacuum that delays the release of the suction cup from the workpiece.
• Make sure the ejector pulse is active until the end of the suction cup’s releasing
procedure.