CATALOGUE release 8.8

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Products designed for industrial applications.
General terms and conditions for sale are available on
Series VEC compact ejectors CATALOGUE
5
/2.15.03 5
> Release 8.8 VACUUM >
VACUUM
Air-saving system
When gripping an object, the
ejector remains active until a
preset vacuum value is reached.
Once reached the preset vacuum
value, the ejector is shut OFF. If
the vacuum level drops below the
preset limit value, the ejector is re-
activated by the electronic control
circuit until the preset vacuum
value is reached again.
Mod.
VEC-10/15-A A = version Normally Open
VEC-10/15-C C = version Normally Closed
VEC-20/25-A A = version Normally Open
VEC-20/25-C C = version Normally Closed
Note: VEC ejectors with air-saving
system are delivered complete with
connectors and cables.
The air saving circuit, where used, switches the suction signal to “ON” apart from the fact that
the jector is NC or NO; this means that, in order to swtch the internal loop back to “OFF”, it is
necessary to activate the signal on the coil controlling it (green cable).
Applications example
- * Evacuation time = time
necessary for the ejector to reach a
vacuum level of -600 mbar
- ** Air consumption l/cycle =
(105/60) x 5 (105 / 60) x 0,05
- *** Prod. cycles/day = 8 hours
x 3600 s = 28.800/20 s per cycle
= 1440 cycles x 2 shifts = 2880
cycles
Operating conditions without air-saving “A” With air-saving “B”
Model VEC-15C2-VE VEC-15C2-RE
Air consumption l/min 105 105
Transport time (sec.) 5 5
Evac. time to -600 mbar (sec.)* 0,05 0,05
Total time vacuum ON (sec.) 5 0,05
Air consumption (l/cycle)** 8,8 0,087
Cycle time (sec.) 20 20
Prod. cycles/day (2-shifts)*** 2880 2880
Daily air consumption (l) 25.361 250
In this example the air-saving system saves around 99% of the air.