Festo OVEM 1P Series User manual

Translation of the original instructions
© 2020 all rights reserved to Festo SE & Co. KG
1 About this document
1.1 Applicable documents
All available documents for the product èwww.festo.com/sp.
Document Product Contents
Instruction manual Manifold rail OABM-P Assembly
Tab. 1 Applicable documents
2 Safety
2.1 Safety instructions
– The product may only be used in its original status without unauthorised
modifications.
– Only use the product if it is in perfect technical condition.
– Use the product only inside buildings.
– Take into consideration the ambient conditions at the location of use.
– The product is intended for use in industrial environments. This product can
generate high frequency malfunctions, which may make it necessary to imple-
ment interference suppression measures in residential areas.
– Observe the specifications on the product labelling.
– Comply with all applicable national and international regulations.
– Observe the local regulations for environmentally friendly disposal.
2.2 Intended use
The intended use of the product is to generate a vacuum.
2.3 UL certification
In combination with the UL inspection mark on the product, the information in this
section must also be observed in order to comply with the certification conditions
of Underwriters Laboratories Inc. (UL) for USA and Canada.
UL approval information
Product category code QUYX (USA)
QUYX7 (Canada)
File number E322346
Standards taken into account UL 61010-1
C22.2 No. 61010-1
UL symbol
Tab. 2 Approval information
The unit shall be supplied by a power source which fulfils the requirements on a
limited-energy circuit in accordance to IEC/EN/UL/CSA 61010-1 or on a Limited
Power Source (LPS) in accordance to IEC/EN/UL/CSA 60950-1 or IEC/EN/UL/CSA
62368-1 or a Class 2 circuit in accordance to NEC or CEC.
3 Further information
– Accessories èwww.festo.com/catalogue.
– Spare parts èwww.festo.com/spareparts.
4 Service
Contact your regional Festo contact person if you have technical questions
èwww.festo.com.
5 Product overview
5.1 Product design
1Solenoid valve for ejector pulse
(eject)
2Solenoid valve for vacuum
3Mechanical manual override
4Supply port (1)
5Exhaust port/silencer (3)
6Vacuum port (2)
7Housing with mounting hole
8Slide for changing the filter ele-
ment
9Filter housing with display window
10 Flow control screw for adjusting
the ejector pulse
11 EDIT button
12 LED for switching output – Out
13 LED for switching input – vacuum
ON/OFF
14 LED for switching input – ejector
pulse (eject)
15 Electrical connection
16 Size OVEM-...-20/-30-C
Fig. 1 Operating elements and connections
LED for switching output Out and EDIT pushbutton not installed for types without
vacuum sensor
Filter housing with inspection window only with OVEM-...-B
5.1.1 Product variants
Product variant Code Meaning
Vacuum generator OVEM Vacuum generator with solenoid valve and manual over-
ride
-05 0.45mm
-07 0.7mm
-10 0.95mm
-14 1.4mm
-20 2.0mm
Nominal width of Laval
nozzle
-30 3.0mm
-H high negative pressureVacuum type
-L high suction volume
-B 20 mm wide, ISO standard
-BN 20 mm wide, NPT
Housing size/width
-C 36 mm wide, ISO standard
all ports with QS push-in fittings (-B-QS/-C-QS)-QS
all ports with QS push-in fittings inch (-BN-QS)
Supply/vacuum port with QS push-in fittings, exhaust
port with open silencer (-B-QO/-C-QO)
-QO
Supply/vacuum port with QS push-in fittings inch,
exhaust port with open silencer (-BN-QO)
all ports with G female thread (-B-GN/-C-GN)-GN
all ports with NPT female thread (-BN-GN)
Supply/vacuum port with G female thread, exhaust port
with open silencer (-B-GO/-C-GO)
-GO
Supply/vacuum port with NPT female thread, exhaust
port with open silencer (-BN-GO)
Pneumatic ports
-PL prepared for common supply manifold, vacuum and
exhaust port with QS push-in fittings (-B-PL/-C-PL)
8140354
OVEM-...-1P/1N
Vacuum generator
8140354
2020-07e
[8140356]
Operating instructions
Festo SE & Co. KG
73734 Esslingen
Ruiter Straße 82
Germany
[phone]
www.festo.com

Product variant Code Meaning
-PL prepared for common supply manifold, vacuum and
exhaust port with QS push-in fittings inch (-BN-PL)
prepared for common supply manifold, vacuum port
with QS push-in fittings, exhaust port with open silencer
(-B-PO/-C-PO)
Pneumatic ports
-PO
prepared for common supply manifold, vacuum port
with QS push-in fittings inch, exhaust port with open
silencer (-BN-PO)
-ON N/O, normally open (vacuum generation)
-OE N/O, normally open (vacuum generation) with ejector
pulse
-OPE N/O, normally open (vacuum generation) with power
ejector pulse (-C)
-CN N/C, normally closed (no vacuum generation)
-CE N/C, normally closed (no vacuum generation) with eject-
or pulse
Normal position of the
vacuum generator
-CPE N/C, normally closed (no vacuum generation) with
power ejector pulse (-C)
Electrical connection -N M12 plug (5-pin)
Vacuum sensor
- Without vacuum sensor (switching input PNP)
-1P 1switching output PNP
-1N 1 switching output NPN
Tab. 3 Overview of variants
5.2 Function
5.2.1 Switching functions
The solenoid valve for vacuum generation switches as an N/C or N/O contact,
depending on the version, when pressurised with compressed air.
The switching output is configured as a N/O contact and switches depending on a
threshold value comparator
With air saving function activated the switching mode is set as the threshold value
comparator by switching output A.
Threshold value comparator
NO (N/O contact)
Tab. 4 Settings for switching points SP, hysteresis Hy and functional reserve FR
Switching behaviour Product feature
Normally open contact (N/O) -OE/-ON/-OPE
Normally closed contact (N/C) -CE/-CN/-CPE
Tab. 5 Switching characteristics and product feature
Code Switching output A Switching input
-1P Switching output positive switching pres-
sure sensor outputA
Switching input positive switching
-1N Switching output negative switching
pressure sensor outputA
Switching input negative switching
without
vacuum
sensor
- Switching input positive switching
Tab. 6 Switching output and switching input variants
Determination of switching point
The switching point (SP) is determined from the teach point (TP) and the function
reserve(35%).
SP = TP – 0.35*TP
The hysteresis has a fixed value.
5.2.2 Valve control
Control of the ejector pulse
– Signal-controlled ejector pulse/power ejector pulse
The ejector pulse is generated via a control signal at the ejector pulse switch-
ing input. The duration of the ejector pulse can be set via the duration of the
control signal at the ejector pulse switching input. The vacuum solenoid valve
or the ejector pulse solenoid valve is controlled as defined by the input sig-
nal.
Destruction of the vacuum sensor due to overpressure (-CPE/-OPE)
The exhaust duct is sealed tightly during the power ejector pulse. This can cause
overpressure at the vacuum port and destroy the vacuum sensor.
• Use power ejector pulse only in open vacuum systems.
1Control signal at the vacuum
switching input
2Control signal at the switching
input ejector pulse / power eject-
or pulse
3Switching position of vacuum
solenoid valve
4Switching position of ejector
pulse solenoid valve
5Vacuum port
Fig. 2 Valve control switching characteristics
6 Assembly
An unfavourable mounting position may impair the function of the product.
• Avoid condensate accumulation in the device through a suitable mounting
position.
• Exhaust air must be able to flow out unhindered.
Direct mounting
Fig. 3 Direct mounting on the side
Variant Screws Tightening torque
OVEM-...-05/-07/-10-...-B/-BN M5 max. 2.5Nm
OVEM-...-14/-20-...-B/-BN M4 max. 2.5Nm
OVEM-...-20/-30-...-C M6 max. 2.5Nm
Tab. 7 Size and tightening torque of the screws for direct mounting on the side
Fig. 4 Direct mounting on the back
Variant Screw Tightening torque
OVEM-...-05/-07/-10/-14/-20-...-B/-BN M3 max. 0.8Nm
OVEM-...-20/-30-...-C M4 max. 0.8Nm
Tab. 8 Size and tightening torque of the screws with direct mounting on the back

H-rail mounting
Type of mounting permissible only for sizes OVEM-...-05/-07/-10/-14/-20-...-B/-
BN
H-rail mounting accessories èwww.festo.com/catalogue
1H-rail mounting 2Screw
Fig. 5 H-rail mounting
1. Attach mounting plate on H-rail mounting 1.
2. Attach OVEM with H-rail mounting to the H-rail and press in the direction of
the arrow.
3. Secure to the H-rail with screw 2.
Mounting with mounting bracket
Type of mounting permissible only for sizes
OVEM-...-05/-07/-10/-14/-20-...-B/-BN
Accessories for mounting bracket èwww.festo.com/catalogue
Fig. 6 Mounting with mounting bracket
Variant Screws Tightening torque
OVEM-...-05/-07/-10-...-B/-BN M5 max. 2.5Nm
OVEM-...-14/-20-...-B/-BN M4 max. 2.5Nm
Tab. 9 Size and tightening torque of the screws for mounting with mounting
bracket
Mounting on common supply manifold
OVEM-...-B/-BN: Mounting is possible on a common supply manifold with a max-
imum of 8 places.
OVEM-...-C: Mounting is possible on a common supply manifold with a maximum
of 4 places.
Assembly instructions for common supply manifold OABM-P
èwww.festo.com/sp
7 Installation
7.1 Pneumatic installation
OVEM-... Symbol
with vacuum sensor
(-1P/-1N)
without vacuum sensor
-QO/-GO-CN-...
-QS/-GN-CN-...
OVEM-... Symbol
with vacuum sensor
(-1P/-1N)
without vacuum sensor
-QO/-GO-ON-...
-QS/-GN-ON-...
-QO/-GO-CE-...
-QO / -GO -...- CPE
-QS/-GN-CE-...
-QS/-GN-...-CPE
-QO/-GO-OE-…
...-QO/-GO-...-OPE
-QS/-GN-OE-...
-QS/-GN-ON-...-OPE
Tab. 10 Circuit symbols for the functions
OVEM-... -05-...-
GN
-07-...-
GN
-10-...-
GN
-14-...-
GN
-20-...-
GN
-30-...-
GN
-05-...-
GO
-07-...-
GO
-10-...-
GO
-14-...-
GO
-20-...-
GO
-30-...-
GO
Tube length [m] <
0.5
< 2 <
0.5
< 2 <
0.5
< 2 <
0.5
< 2 <
0.5
< 2 <
0.5
< 2
Min. internal diameter of tubing [mm]
- Supply port 1 2 1.5 2 2 3 3 4 4 5 6 7
- Vacuum port 2 3 3 4 4 5 5.5 6 6 7 9 11

OVEM-... -05-...-
GN
-07-...-
GN
-10-...-
GN
-14-...-
GN
-20-...-
GN
-30-...-
GN
-05-...-
GO
-07-...-
GO
-10-...-
GO
-14-...-
GO
-20-...-
GO
-30-...-
GO
- Exhaust port 2 3 3 4 4 5 5.5 6 6 7 9 11
Tab. 11 Minimum inside diameter of the connection tubes for connections with G-
female thread
Notes on the pneumatic connection
– Maximum permissible tube length 2 m
– OVEM-...-GN/-GO: minimum inside diameter of the connection tubes
è Tab. 11 Minimum inside diameter of the connection tubes for connections
with G-female thread.
– Do not seal exhaust port.
– OVEM-...-07/-10/-14/-20/-30: If necessary, lengthen silencers with a silencer
extension èwww.festo.com/catalogue.
– Recommendation: Use type PUN tubes èwww.festo.com/catalogue.
7.2 Electrical installation
WARNING!
Risk of injury due to electric shock.
• For the electrical power supply, use only PELV circuits in accordance with IEC
60204-1/EN 60204-1 (Protective Extra-Low Voltage, PELV).
• Observe the general requirements of IEC 60204-1/EN60204-1 for PELV cir-
cuits.
• Only use voltage sources that ensure a reliable electric separation from the
mains network in accordance with IEC 60204-1/EN 60204-1.
• Connect the vacuum generator to the electrical connection.
– 5-pin plug, M12x1
– Maximum tightening torque of M12 plug: 0.5Nm
– Maximum permissible cable length: 20m
Plug Pin Wire
colour1)
Function
1 brown (BN) +24V
2 white (WH) Vacuum switching input
3 blue (BU) 0V
4 black (BK) Switching output (Out)2)
5 grey (GY) Switching input ejector pulse/power ejector pulse
1) When using the connecting cable as per Accessories
2) Pin 4 not assigned for types without vacuum sensor
Tab. 12 Pin allocation OVEM-...-1PD
Circuit Diagrams
OVEM-...-1P OVEM-...-1N
OVEM without vacuum sensor
Tab. 13 Circuit diagrams for vacuum generator
8 Commissioning
Commissioning by qualified personnel.
8.1 Quick commissioning
Factory settings:
– Switching characteristics of the electrical output: threshold value comparator
– Switching function of the electrical output: N/O contact (normally open)
– Switching point (SP): -0.4bar. Alternatively, teach-in switching point
è 9.1 Teach-in switching point.
– Fixed hysteresis (HYS): 20mbar
1. Mount the vacuum generator è 6 Assembly.
2. Connect the pneumatics for the vacuum generator
è 7.1 Pneumatic installation.
3. Connect the electrics for the vacuum generator è 7.2 Electrical installation.
The factory settings cannot be restored.
8.2 Commissioning the vacuum generator
At initial commissioning, the vacuum generator is placed in operation with the
factory settings .
Requirement
Vacuum generator is fully mounted and connected è 6 Assembly.
Checking operating conditions
• Check operating conditions and critical limits è 14 Technical data.
Commissioning the vacuum generator OVEM-...-OE/-OPE
1. Apply operating pressure to supply port (1).
ÄNegative pressure is generated at the vacuum port (2).
2. Switch on the operating voltage.
ÄThe current pressure is displayed and the vacuum generator is ready for
operation.
Commissioning the vacuum generator OVEM-...-CE/-CPE
1. Apply operating pressure to supply port (1).
2. Switch on the operating voltage.
3. Activate suction: apply input signal to pin 5.
ÄNegative pressure is generated at the vacuum port (2). The current pres-
sure is displayed and the vacuum generator is ready for operation.
Changing the operating pressure changes the power of the negative pressure at
the vacuum port. This allows the vacuum to be adjusted.
Functions and parameters can be specified:
– manually at the device
– by teach-in
8.3 Setting the intensity of the ejector pulse
Requirement
– Vacuum generator is in operation
Procedure
1. Screw in the flow control screw aJ completely
ÄThe channel for the ejector pulse is closed. An ejector pulse is not gener-
ated.
2. Switch off vacuum generation.
3. Screw the flow control screw out or in to adjust the ejector pulse to the
required intensity.
4. Test the settings before commissioning.
8.4 Reducing the vacuum
OVEM-...-CN/-ON
• Cut off the compressed air supply by switching the input voltage off (-CN) or
on (-ON).
ÄThe vacuum port5 is pressurised. The workpiece is released from the
suction gripper.
OVEM-...-CE/-OE/-CPE/-OPE
• Switching on the solenoid valve for ejector pulse1 generates an ejector
pulse.
ÄThe vacuum port5 is pressurised. The workpiece is released from the
suction gripper.
The use of large suction cups with connectors can create a device-independent
vacuum due to the interference resistance when the suction cup with connector is
detached from the workpiece.
Set up the ejector pulse accordingly.
9 Operation and use
9.1 Teach-in switching point
Change in switching pressure if the EDIT key is accidentally pressed (£2s).
• Do not press the EDIT key accidentally.
The vacuum generator is preset at the factory (è 8.1 Quick commissioning).
These settings can be quickly adapted to the application by teach-in of a switch-
ing point.
1. Apply operating voltage.
2. Set the desired teach pressure (e.g. object gripped).
3. Press and hold the EDIT key aA>2s.
ÄLED Out aB flashes.
4. Release the EDIT button aA.
ÄThe current teach point (TP) minus the functional reserve is saved as the
switching point (SP) and is applied for the switching output.
9.2 Mechanical manual override
Both solenoid valves can be manually switched with the manual override.

Fig. 7
1. Press in the plunger of the manual override with a blunt pin.
ÄThe solenoid valve switches.
2. Remove pin.
ÄThe plunger of the manual override is automatically reset. The solenoid
valve returns to the initial position.
9.3 Electrical manual override
9.4 Vacuum generator status indicator
LED Status Meaning
off Switching point not reached
lights Switching point is reached
Out
flashes Teach procedure is started
off Solenoid valve for vacuum is not switched,
vacuum is not generated
CE/CN/C-
PE
light on Solenoid valve for vacuum is switched,
vacuum is generated
off Solenoid valve for vacuum is not switched,
vacuum is generated
Vacuum
ON/OFF
OE/ON/O-
PE
lights Solenoid valve for vacuum is switched,
vacuum is not generated
off Solenoid valve for ejector pulse is not
switched, ejector pulse is not generated
Eject
lights Solenoid valve for ejector pulse is
switched, an ejector pulse is generated
Tab. 14 Vacuum generator status indicator
10 Maintenance and care
Clean device
1. Switch off energy sources:
– Operating voltage
– Compressed air
2. Clean device with non-abrasive cleaning agents.
3. Check air filter through the display window for dirt.
Replace air filter
The air filter cannot be replaced in the vacuum generator OVEM-...-20/-30-C
1Gate valve 2Filter
Fig. 8 Remove/install air filter
1. Exhaust the vacuum generator.
2. Carefully pull gate valve 1 out to the first detent. The gate valve must stay in
this position on the filter.
3. Pull filter 2 out. Clean with white spirit.
4. Push filter into the housing.
5. Push in gate valve.
ÄThe gate valve pushes the filter into the vacuum generator.
11 Fault clearance
11.1 Malfunctions
Malfunction Possible cause Remedy
device-independent vacuum
between workpiece and suction
gripper, ejector pulse not activated
or sufficiently dimensioned
– Activate ejector pulse when
lifting the suction gripper.
– Increase duration and intensity
of ejector pulse.
Tubing dimensioned incorrectly – Replace tubing (tubing dimen-
sions
è 7.1 Pneumatic installation).
Workpiece is not
released by the suction
gripper
Flow control screw closed – Open flow control screw.
Short circuit or overload at the out-
put
– Eliminate short circuit/over-
load.
Device faulty – Replace device.
Switching output does
not react in accordance
with the settings
Incorrect switching point taught
(e.g.at 0bar)
Repeat teach procedure
Operating voltage faulty – Apply permissible operating
voltage
è 7.2 Electrical installation.
Electrical connections swapped – Connect device correctly
è 7.1 Pneumatic installation.
No control signal Check controller
No LED display for
switching inputs
Device faulty – Replace device.
Tab. 15 Malfunctions
12 Disassembly
1. Switch off energy sources:
– Operating voltage
– Compressed air
2. Disconnect pneumatic and electrical connections from the device.
3. Loosen mountings and remove device.
13 Disposal
ENVIRONMENT!
Send the packaging and product for environmentally sound recycling in accord-
ance with the current regulations èwww.festo.com/sp.
14 Technical data
OVEM-... -05 -07/-10 -14/-20--
B/-BN
-20/-30--
C
General
c UL us - listed (OL)
RCM compliance mark
Approvals
KC mark
Characteristic values
Operating pressure OVEM-...-
QS/-GN/-PL
[bar] 2 … 6
Operating pressure OVEM-...-
QO/-GO/-PO
[bar] 2 … 8
Pressure measuring range [bar] –1 … 0
Overload pressure at vacuum
port
[bar] £ 5
Ready-state delay [ms] £ 500
Dead time (evacuation and
ejection)
[ms] £ 12 £22 £ 35 £ 60
Electronics
Nominal operating voltage [V DC] 24 ± 15 %
Max. output current (per
switching output)
[mA] 100
Voltage drop (for all switch-
ing outputs)
[V] £ 1.5
No-load supply current [mA] < 70
Coil characteristics 24 V DC –
low current phase
[W] 0.3
Coil characteristics 24 V DC –
high current phase
[W] 2.55
Time until current reduction [ms] 80
Capacitive load maximum DC [mF] £ 100
Overload protection Present
Inductive protective circuit adapted to MZ, MY, ME coils
Insulation voltage [V] 50
Surge resistance [kV] 0.8
Max. current consumption
OVEM-...-1P/-1N [mA] 180
without vacuum sensor [mA] 30
Accuracy [% FS] ± 0.5
Tolerance of fixed hysteresis [% FS] ± 0.5
Short circuit current rating Yes

OVEM-... -05 -07/-10 -14/-20--
B/-BN
-20/-30--
C
Reverse polarity protection For all electrical connections
Environment
Ambient temperature [°C] 0 … 50
Temperature of medium [°C] 0 … 50
Contamination level 3
Operating medium Compressed air to ISO8573-1:2010 [7:4:4]
Note on the operating medi-
um
Lubricated operation not possible
Shock resistance (in accord-
ance with IEC 60068/EN
60068)
30g acceleration with 11ms duration (half-sine)
Vibration resistance (in
accordance with EN 60068-2)
10…60 Hz: 0.35 mm/
60…150 Hz: 5g
Protection class III
Degree of protection IP 651)
Relative humidity [%] 5 … 85
Interference emission as per EN 61000-6-4
Immunity to interference as per EN 61000-6-2
Maximum permissible
signal line length
[m] 20
Materials
Information on materials –
seals
NBR HNBR
Information on materials –
housing
Die-cast aluminium, PA reinforced Wrought
aluminium
alloy
Information on materials –
plug housing
Nickel-plated brass
1) Degree of protection has not been evaluated by UL
Tab. 16 Technical data