Connecting the ejector pneumatics
W
Use only compressed air from an appropriately
maintained system (air or neutral gas in accordance
with EN 983, filtered to 5 μm, oiled or oil-free).
W
We recommend using external filters for high levels of
accumulated dirt on the suction end (dust, chips, etc.):
for example, VFI 6/4 for BV 07/10 and VFI 8/6 for
BV 15.
W
Dirt particles or foreign bodies in the ejector
connection or tubing or pipelines may impair the
ejector's function or lead to a malfunction.
W
Route tubing and pipelines as short as possible.
W
If the inside diameters selected for the compressed air
end are too small, the supply of compressed air will be
insufficient. As a result, the ejector will not achieve its
specified performance.
W
If the inside diameter selected for the vacuum end is
too small, this will cause an excessively high flow
resistance. This will in turn decrease the suction
capacity and increase the suction time. Blow-off times
will also increase.
W
Use only the tubing or pipe inside diameters that are
recommended for the ejector. If this is not possible, use
the next higher diameter.
Recommended inside diameters
Make the pneumatic connection for the ejector as follows,
see Fig
:
1.
Make sure the relevant system part is not under
pressure.
2.
Lay the tubes so as not to bend or crush them.
3.
Connect the compressed air tubing with the
compressed air connection (
5
) and the vacuum tubing
with the vacuum connection (
4
).
CAUTION
System is under pressure during operation
Working on the system under pressure can lead to
injuries and damage to property.
O
Depressurize all relevant system parts prior to
performing work on the system.
ECD-BV-EC-...
Performance
class
Inside diameter [mm]
1)
1)
Based on a maximum tubing length of 2 m. In the case of
longer tubing lengths, select larger cross sections as
appropriate.
Compressed air
end
Vacuum end
07
4
4
10
4
4
15
4
6
4
1
3
Scope of Delivery
The scope of delivery includes:
W
1 compact ejector ECD-BV
W
Operating instructions
4
About This Product
Product overview
Fig.
shows compact ejector ECD-BV.
Function description
Vacuum generation (suctioning of workpiece)
The ejector is designed for handling parts using a vacuum
in conjunction with suctioning systems.
The ejector is actuated via the pilot valves. The “suction”
pilot valve activates and deactivates the Venturi nozzle. In
the NO variant, an applied voltage deactivates the Venturi
nozzle, while in the NC version it activates the nozzle.
On suctioned objects with leak-tight surface, the
integrated non-return valve prevents the vacuum from
dropping.
Blow off (placing down the workpiece)
The vacuum circuit of the ejector is pressurized with
compressed air via the “blow off” pilot valve. This mode is
used to ensure fast vacuum reduction and thus quick
placing of the workpiece.
Product description
Variants
Every ejector has an exact article designation
(e.g. ECD-BV-EC-07-NO). The breakdown for the article
designation is as follows:
O
Refer to the name plate of your variant for further
details, see figure
.
5
Assembly
Assembling the ejector
The ejector can be mounted either with screws or by using
a hat rail clamp, see Fig
and
.
See figure
for dimensions.
Type
ECD-BV
Operating mode:
electrical
EC
Via the pilot valve push-in fittings
Performance
class
07; 10; 15
Home position
NO
(normally open)
suction without
current
NC
(normally
closed) no
suction without
current
When mounting the fastening screws,
we recommend using washers.
1
1
1
3
1
3
1
3
1
2
AVENTICS
| ECD-BV | R412025988–BAL–001–AA | English
9
