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Product description
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EN-US · 30.30.01.01602 · 01 · 10/18
3 Product description
3.1 Description of the Ejector
3.1.1 Suction of the Workpiece (Vacuum Generation)
The Venturi nozzle on the ejector is activated and deactivated using the Suction command.
In the NO (normally open) version, the Venturi nozzle is continuously sucking. As soon as compressed air is
present at the ejector, the Venturi nozzle becomes active and the ejector generates a vacuum (suction). As
soon as there is no compressed air at the ejector, the Venturi nozzle is deactivated.
An integrated sensor records the vacuum generated by the Venturi nozzle. The value is evaluated using
electronics, displayed via the display and output via the IO-Link process data. The measured value serves
as the basis for the various condition monitoring analysis functions in IO-Link mode.
The ejector has an integrated, pneumatically controlled, air saving function and automatically regulates
the vacuum in Suction mode:
•
The integrated, pneumatically controlled, air saving function switches off the Venturi nozzle as soon
as the set vacuum limit value, deactivation value A, has been reached (factory setting).
•
When objects with dense surfaces are picked up, the integrated non-return valve prevents the vac-
uum from dropping.
•
If the system vacuum drops below the activation limit value E due to leaks, the Venturi nozzle is
switched back on.
•
Depending on the vacuum, the switching point SP1 is set once a workpiece is picked up safely. This
enables the further handling process.
•
The enable signal is only reset when rP1 is not reached
(> See ch. 3.1.3)
.
The air saving function is integrated in the ejector via a pneumatic controller. The limit values A and E
cannot be changed.
The display and the LED status display show the current process states, for example the current vacuum
level is displayed.
If small volumes are to be evacuated, the set deactivation value A might be exceeded consider-
ably before the vacuum is switched off. This system behavior does not constitute an error.
3.1.2 Depositing the Workpiece (Blowing Off)
In Blow off mode, the vacuum circuit of the ejector is supplied with external compressed air at the corre-
sponding compressed air connection. This ensures that the vacuum drops quickly, depositing the work-
piece quickly as well.
NOTE
Compressed air at both compressed air connections at the same time
Damage to the ejector
4
Do not apply compressed air to both compressed air connections at the same time!
When blowing off, make sure that the compressed air supply for vacuum generation is switched off.
Содержание SCPi FS RP
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Страница 17: ...Technical Data EN US 30 30 01 01602 01 10 18 17 58 4 4 4 Pneumatic Circuit Plan...
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Страница 57: ...Notes EN US 30 30 01 01602 01 10 18 57 58 16 Notes...
Страница 58: ...J Schmalz GmbH EN US 30 30 01 01602 01 10 18 Subject to technical changes without notice...