Schmalz SCTMb, Руководство по эксплуатации

Страница: 9 / 30

Product Description
EN-US · 30.30.01.02106 · 00 · 07/19 9 / 30
3 Product Description
3.1 Mini Compact Terminal Description
The Schmalz mini compact terminal SCTMb, or SCTMb for short, is a compact unit of multiple vacuum
generators known as ejectors. Thanks to its modular design, up to 16 individual ejectors can be controlled
and configured independently. It can be used to handle different parts simultaneously and independently
using just one vacuum system.
To control the suction and blow-off functions, the SCTMb has a discrete interface for each valve. The com-
pressed air supply can be connected centrally for all ejectors. As an alternative, it can also be connected
separately for each ejector.
3.2 Description of the Ejector
3.2.1 Suction of the Workpiece (Vacuum Generation)
The ejector is designed for vacuum handling of airtight parts in combination with suction systems. The
vacuum is generated in a nozzle according to the Venturi principle, i.e. by using suction generated by the
flow of accelerated compressed air. Compressed air is channeled into the ejector and flows through the
nozzle. A vacuum is generated immediately downstream of the motive nozzle; this causes the air to be
sucked through the vacuum connection. The air and compressed air that have been removed by the suc-
tion exit together via the silencer.
The venturi nozzle on the ejector is activated and deactivated using the suction command:
• In the NO (normally open) variant, the venturi nozzle is deactivated when the suction signal is re-
ceived.
• In the NC (normally closed) variant, the venturi nozzle is activated when the suction signal is re-
ceived.
When objects with airtight surfaces are picked up, the integrated non-return valve prevents the vacuum
from dropping.