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For your safety
The ejector has been manufactured according to the accepted rules of safety and
current technology. There is, however, still a danger of personal injury or damage to
equipment if the following general safety instructions and the warnings before the
steps contained in these instructions are not complied with.
O
Read the EBS-PT operating instruction (R412008280) completely, especially
chapter 2 “„For your safety“”, before working with the ejector.
O
Read these operating instructions completely before working with the ejector.
O
Keep these operating instructions, as well as the EBS-PT (R412008280)
operating instructions, in a location where they are accessible to all users at all
times.
O
Always include these instructions and the EBS-PT (R412008280) operating
instructions when you pass the ejector on to third parties.
Intended and improper use
O
See the EBS-PT operating instructions (R412008280)
The following must be observed
General safety instructions
O
See the EBS-PT operating instructions (R412008280)
Assembly
O
Make sure that all relevant system parts are not under voltage or pressure before
you assemble the ejector.
Operation
O
Operation in an explosive atmosphere is not permissible!
There is a danger of fires and explosions!
Additionally when using the vacuum switch or electromagnetic valve
O
Observe the general safety regulations, EN standards, and VDE directives.
O
Only use protective extra-low voltage (PELV) and ensure safe electrical isolation
of the operating voltage in accordance with EN 60204.
O
Lay the electrical connection cables without any kinks.
O
The vacuum switch may not be opened – not even to repair it!
There is a danger of damage to the switch, as well as a danger of injury!
O
Do not use the vacuum switch in an environment that is not splashwater-proof.
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Applications
O
See the EBS-PT operating instructions (R412008280).
4
Delivery contents
The following is included in the delivery contents:
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Device overview
Designs (examples, Fig. 1)
EBS-ET
EBS-PT-...-VE
W
1 EBS-ET ejector
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1x operating instructions
EBS-PT (R412008280)
W
1x operating instructions
EBS-ET/PT-...-VE (R412005759)
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1 EBS-PT-...-VE ejector
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1x operating instructions
EBS-PT (R412008280)
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1x operating instructions
EBS-ET/PT-...-VE (R412005759)
Type
Functions
1a
EBS-PT-...-VE
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Pneumatic control,
W
with vacuum switch
1b
EBS-ET-05/07-NC-VE
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Electromagnetic valve for suction,
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with vacuum switch
1c
EBS-ET-05/07-NC-C-VE
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Electromagnetic valve for suction,
W
accumulator for blow-off pulse,
W
with vacuum switch
1d
EBS-ET-10/15-NO-C-VE
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Electromagnetic valve for suction
W
Electromagnetic valve for blow-off
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with vacuum switch
1e
EBS-ET-20/25-NO-C-VE
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Electromagnetic valve for suction
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Electromagnetic valve for blow-off
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with vacuum switch
The ejectors are also available without vacuum switches and with threaded
connections.
Device description (Fig. 1)
Function
The ejector is supplied with compressed air via connection (
3
). The compressed air
flowing through generates a vacuum at connection (
2
) and is blown off to the outside
via exhaust openings (
4
). The following functions are possible, depending on the
design:
W
The vacuum can be switched on and off via an electromagnetic valve (
6
).
W
A blow-off pulse can be generated via an electromagnetic valve (
7
) or
pneumatically via an accumulator (
8
).
W
A vacuum switch (
5
) makes it possible to recognize the presence of a vacuum and
to generate a switch pulse.
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Assembly
Connecting the ejector pneumatics
O
See the EBS-PT operating instructions (R412008280).
Connecting the ejector electrics
Connecting the electromagnetic valve (Fig. 2)
(only for versions with an electromagnetic valve)
1.
Wire the open cable side with your system.
No polarity must be observed when ap24 V DC (bipolar).
2.
Insert the connector in the socket on the electromagnetic valve until it engages.
Connecting the vacuum switch (Fig. 3 + 4)
(only for versions with a vacuum switch)
O
Wire the vacuum switch connection cable with your system (see the following
table and Fig. 3 + 4).
Notes on installation:
W
Install lines that are as short as possible to avoid malfunctions.
W
Connect the line shield to an interference-free ground potential. The shield is not
connected to the sensor.
7
Commissioning
1.
Make sure before commissioning that all the connections on the ejector are
properly connected and all the plastic tubing is firmly fitted.
2.
Apply the compressed air to the system.
3.
Check whether the necessary vacuum has been attained (e.g. with a pressure
gauge).
If using electromagnetic valves:
4.
Test the function of the electromagnetic valves.
If using a vacuum switch:
5.
Test the function of the vacuum switch.
1
M4 mounting bores
5
Vacuum switch with LED
2
Vacuum connection
6
“Suction” electromagnetic valve
3
Compressed air connection
7
“Blow-off” electromagnetic valve
4
Exhaust connection/silencer
8
Accumulator for blow-off pulse
CAUTION
System is operating under voltage.
Working on the system when under voltage could lead to injuries from an electric
shock and damage to the components!
O
Make sure that all relevant system parts are not under voltage before working
on the system.
Use connector type 10/15, MNR 1834484253 to connect the electromagnetic
valve. (Not included in the delivery contents. Order separately)
Wire color
Function
Blue (Fig. 4:
1
)
Ground (0 V)
Brown (Fig. 4:
2
)
Operating voltage U+
Black (Fig. 4:
3
)
Switch signal
Shielding
Must be connected to ground
AVENTICS
| EBS-ET / EBS-PT-...-VE | R412005759–BDL–001–AC | English
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