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8125662
OVEM
Vacuum generator
8125662
2020-05h
[8125664]
Operating instructions
Translation of the original instructions
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3Festo — OVEM — 2020-05h
1 About this document................................................................................................... 5
1.1 Applicable documents.................................................................................................. 5
2 Safety........................................................................................................................... 5
2.1 Safety instructions........................................................................................................ 5
2.2 Intended use................................................................................................................ 5
2.3 UL certification............................................................................................................. 5
3 Further information..................................................................................................... 6
4 Service..........................................................................................................................6
5 Product overview......................................................................................................... 6
5.1 Product design............................................................................................................. 7
5.1.1 Product variants......................................................................................................7
5.1.2 Display components............................................................................................... 10
5.2 Function....................................................................................................................... 14
5.2.1 Switching functions................................................................................................ 15
5.2.2 Valve control...........................................................................................................16
5.2.3 Air saving function.................................................................................................. 17
5.2.4 Optimisation of the transport time..........................................................................18
5.2.5 Monitoring and diagnostics.................................................................................... 18
5.2.6 Measured variables................................................................................................ 19
5.2.7 Teach function........................................................................................................ 20
5.2.8 Operating statuses and menu structure..................................................................21
6 Assembly..................................................................................................................... 25
7 Installation.................................................................................................................. 28
7.1 Pneumatic installation.................................................................................................. 28
7.2 Electrical installation.................................................................................................... 30
8 Commissioning............................................................................................................ 32
8.1 Commissioning the vacuum generator......................................................................... 32
8.2 Setting the intensity of the ejector pulse...................................................................... 33
9 Operation and use....................................................................................................... 34
9.1 Setting the ejector pulse duration................................................................................ 34
9.2 Configuring switching outputs...................................................................................... 35
9.3 Setting the switching characteristics of a switching output........................................... 35
9.4 Set diagnostic message channel.................................................................................. 36
9.5 Teach-in switching point............................................................................................... 37
9.6 Deleting minimum or maximum pressure value............................................................ 37
9.7 Setting critical limits for the evacuation and air supply times........................................38
9.8 Teaching evacuation and air supply time...................................................................... 38
9.9 Displaying evacuation and air supply times.................................................................. 39
9.10 Deleting evacuation and air supply times..................................................................... 39
9.11 Mechanical manual override......................................................................................... 40
Table of contents
9.12 Electrical manual override............................................................................................. 40
9.13 Activating the security code...........................................................................................41
9.14 Switching air saving function on or off...........................................................................41
9.15 Restore factory settings.................................................................................................41
10 Maintenance and care.................................................................................................. 42
11 Fault clearance............................................................................................................. 43
11.1 Diagnostic levels........................................................................................................... 43
11.2 Error messages and error codes.................................................................................... 44
11.3 Malfunctions..................................................................................................................45
12 Disassembly................................................................................................................. 46
13 Disposal........................................................................................................................47
14 Technical data.............................................................................................................. 47
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1 About this document
1.1 Applicable documents
All available documents for the product www.festo.com/sp.è
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 fre-
quency malfunctions, which may make it necessary to implement interference suppression meas-
ures 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
About this document
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 www.festo.com/catalogue.è
Spare parts www.festo.com/spareparts.è
4 Service
Contact your regional Festo contact person if you have technical questions www.festo.com.è
5 Product overview
Further information
6 Festo — OVEM — 2020-05h
Product variant Code Meaning
-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)
-1PD 1 switching output PNP, with display
-2P 2 switching outputs PNP
-2N 2 switching outputs NPN
-PU 1 switching output PNP, 1 analogue output 0 10V
-PI 1 switching output PNP, 1 analogue output 4 20mA
Alternative vacuum display
- bar (-B/-C), InHg (-BN)
-B bar (-BN)
-W InH20 (-BN)
-H InHg (-B/-C)
Tab. 3 Overview of variants
Product overview
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5.1.2 Display components
1Display segment switching output Out A
2Display segment switching output Out B
(except OVEM-...-1PD)
3Display segment switching input In A1
(except OVEM-...-1PD)
44-digit alphanumeric display
5Toolbar for functions
6Segment bar right: graphic display of the
current status of the digital inputs or valve
status
7B pushbutton
8A pushbutton
9EDIT button
10 Segment bar left: graphic display of the cur-
rent pressure value related to the maximum
measured value of the measuring range
Fig. 2 LCD display and operating keys
Symbol Description
Threshold value comparator selected
"[SP]" Switching point
Product overview
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Display Description
Segment L18 + "[B]" lit and "[msec]" +
"[_|¯¯|_]" flashing
Duration of ejector pulse
Segments L1, L3, L4, L5 lit and Diagnostics of evacuation and pressurisa-
tion times
"[msec]" + "[_|¯]" + "[min]" flashing Display of minimum evacuation time
"[msec]" + "[_|¯]" + "[max]" flashing Display of maximum evacuation time
"[msec]" + "[¯|_]" + "[min]" flashing Display of minimum pressurisation time
"[msec]" + "[¯|_]" + "[max]" flashing Display of maximum pressurisation time
"[msec]" + "[_|¯]" + "[SP]" + "[max]" flash-
ing
Display/setting of evacuation time critical
limit value
"[msec]" + "[¯|_]" + "[SP]" + "[max]" flash-
ing
Display/setting of pressurisation time crit-
ical limit value
Segments L1, L2, L5, L6 lit and display
"<ON>" - "[Option]" flashing
Setting of air saving function (EDIT mode)
"<ON>": air saving function active
"<OFF>": air saving function not active
Segments L1, L2, L5, L6 lit and "[Lock]"
flashing
Setting the security code (1...9999)
<OFF>: security code is not active
Segment L10 + "[B]" lit + display "<FORC>" additional function of the electrical manual
override via operating buttons
Vacuum solenoid valve switched
Segment L14 + "[B]" lit + display "<FORC>" additional function of the electrical manual
override via operating buttons
Ejector pulse solenoid valve (Eject)
switched
Tab. 5 OVEM-...-2P/-2N/PU/PI: additional displays of segment bars – examples
Product overview
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Display Description
Segments L1, L2, L5, L6 lit and display
"<ON>" - "[Option]" flashing
Setting of air saving function (EDIT
mode)
"<ON>": air saving function active
"<OFF>": air saving function not active
Segments L1, L2, L5, L6 lit and "[Lock]"
flashing
Setting the security code (1...9999)
<OFF>: security code is not active
Segment L10 + "[B]" lit + display
"<FORC>"
additional function of the electrical
manual override via operating buttons.
Vacuum solenoid valve switched
Segment L12 + "[B]" lit + display
"<FORC>"
additional function of the electrical
manual override via operating buttons.
Ejector pulse solenoid valve (Eject)
switched
Tab. 6 OVEM-...-1PD: additional displays of segment bars – examples
5.2 Function
Function overview
The OVEM is a vacuum generator with digital transmission of setpoint and actual value as well as dia-
gnostics and parameterisation options. It is configured with the operating keys. Diagnostic messages
are shown on the display.
Function OVEM-...
-2P/2N/P-
U/PI
OVEM-...
-1PD
Control of the compressed air supply with 2 valve functions
è 5.2.2 Valve control
x x
Air saving function 5.2.3 Air saving function x xè
Electrical and mechanical manual override
è è 9.12 Electrical manual override and 9.11 Mechanical manual override
x x
Monitoring of the vacuum build-up by integrated pressure sensor and
advanced monitoring functions 5.2.5 Monitoring and diagnostics è
x x
Auto-drop function:
Generation of an automatic ejector pulse/power ejector pulse for acceler-
ated vacuum purging and safe set-down 5.2.2 Valve controlè
x -
Product overview
14 Festo — OVEM — 2020-05h
1Control signal at the digital switching input
(suction) DI1
2Control signal at the digital switching input
(ejection) DI2 (only OVEM-...-1PD)
3Switching position of vacuum solenoid
valve
4Switching position of ejector pulse solenoid
valve
5Vacuum port (2)
tab Duration of ejector pulse
Fig. 3 Valve control switching characteristics
5.2.3 Air saving function
The air saving function reduces air consumption during the evacuation phase.
Product overview
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Fault detection 11 Fault clearanceè
The diagnostic messages are shown on the display.
Switching output Out B can also be set as a diagnostic message channel (dI 1 or dI 2) for variants with
2 switching outputs (OVEM-...-2P/-2N) 9.4 Set diagnostic message channel. è
The monitoring functions are activated at the factory (except for monitoring of the evacuation and
pressurisation times). The time monitoring can be activated through setting of the critical limits for
evacuation time and pressurisation
time 9.7 Setting critical limits for the evacuation and air supply times. è
5.2.6 Measured variables
Pressure value (vacuum)
The pressure value (vacuum) between the vacuum port and filter is continuously measured.
In the OVEM-...-20/30-C, the pressure value (vacuum) between the filter and the check valve is con-
tinuously monitored.
The minimum and maximum measured pressure values are saved. If the operating voltage of the vacu-
um generator is switched off, these values are reset.
Cycle time
A cycle covers the time from the start of evacuation through ejection to the start of the new evacu-
ation.
Evacuation time and pressurisation time
The evacuation time tE is measured from the start of evacuation until switching point SP1 of the
switching output is reached.
The pressurisation time tBis measured from the start of pressurisation up to the time at which the
pressure value (vacuum) falls below −50mbar.
Product overview
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EDIT mode
Setting of parameters
Operation of the electrical manual override (FORC)
1Submenu only available with
OVEM-...-CE/-OE/-CPE/-OPE
Fig. 8 EDIT mode menu structure
Product overview
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H-rail mounting
Type of mounting permissible only for sizes OVEM-...-05/-07/-10/-14/-20-...-B/-BN
H-rail mounting accessories www.festo.com/catalogueè
1H-rail mounting 2Screw
Fig. 12 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 www.festo.com/catalogueè
Fig. 13 Mounting with mounting bracket
Assembly
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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. 14 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 maximum 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 www.festo.com/spè
7 Installation
7.1 Pneumatic installation
Variant Circuit symbol Variant Circuit symbol
OVEM-...-QO-CN
OVEM-...-GO-CN
OVEM-...-QO-CE
OVEM-...-GO-CE
OVEM -...- QO-CPE
OVEM -...- GO-CPE
OVEM -...- QO-CPE
OVEM -...- GO-CPE
OVEM-...-QS-CN
OVEM-...-GN-CN
OVEM-...-QS-CE
OVEM-...-GN-CE
OVEM -...- QS-CPE
OVEM -...- GN-CPE
OVEM -...- QS-CPE
OVEM -...- GN-CPE
OVEM-...-QO-ON
OVEM-...-GO-ON
OVEM-...-QO-OE
OVEM-...-GO-OE
Installation
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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 circuits.
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) L+ +24V
2 white (WH) DO2 digital output Out B
3 blue (BU) L- 0V
4 black (BK) DO1 digital output Out A/Out A (air-save)
5 grey (GY) DI1 Digital switching input (suction)2)
1) When using the connecting cable as per Accessories
2) The workpiece is set down with a falling edge of the “Suction” control signal.
Tab. 17 Pin allocation OVEM-...-2P/-2N
Plug Pin Wire colour1) Function
1 brown (BN) L+ +24V
2 white (WH) AO1 Analogue output Out B
3 blue (BU) L- 0V
4 black (BK) DO1 digital output Out A/Out A (air-save)
5 grey (GY) DI1 Digital switching input (suction)2)
1) When using the connecting cable as per Accessories
2) The workpiece is set down with a falling edge of the “Suction” control signal.
Tab. 18 Pin allocation OVEM ... PU/PI
Plug Pin Wire colour1) Function
1 brown (BN) L+ +24V
2 white (WH) DO1 digital output Out A/Out A (air-save) (PNP)
3 blue (BU) L- 0V
4 black (BK) DI2 digital switching input (ejection) (PNP)
Installation
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Plug Pin Wire colour1) Function
5 grey (GY) DI1 digital switching input (suction) (PNP)
1) When using the connecting cable as per Accessories
Tab. 19 Pin allocation OVEM-...-1PD
Circuit Diagrams
OVEM-...-2P OVEM-...-2N
OVEM-...-PU OVEM-...-PI
OVEM-...-1PD
Tab. 20 Circuit diagrams for vacuum generator
Circuit Diagrams
OVEM-...-1P OVEM-...-1N
Installation
31Festo — OVEM — 2020-05h
Circuit Diagrams
OVEM without vacuum sensor
Tab. 21 Circuit diagrams for vacuum generator
8 Commissioning
Commissioning by qualified personnel.
8.1 Commissioning the vacuum generator
At initial commissioning, the vacuum generator is placed in operation with the factory settings
è Tab. 22 Factory settings.
Requirement
Vacuum generator is fully mounted and connected 6 Assembly.è
Checking operating conditions
Check operating conditions and critical limits 14 Technical data.è
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 pressure 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 EDIT modeè
by teach-in TEACH modeè
Commissioning
32 Festo — OVEM — 2020-05h
8.2 Setting the intensity of the ejector pulse
Fig. 14 Set the intensity of the ejector pulse
Requirement
Vacuum generator is in operation
Feed through with automatic ejector pulse (-2P/-2N/-NU/-NI/-PU/-PI)
1. Screw in the flow control screw completelyaJ
ÄThe channel for the ejector pulse is closed. An ejector pulse is not generated.
2. Switch on vacuum generation.
ÄNegative pressure is generated at the vacuum port.
3. Switch off vacuum generation.
4. Unscrew flow control screw slightly.
ÄAn automatic ejector pulse is generated. If an automatic ejector pulse is not generated, oper-
ate the mechanical manual override of the ejector pulse solenoid valve.
5. Screw the flow control screw out or in to adjust the ejector pulse to the required intensity.
Setting the ejector pulse duration 9.1 Setting the ejector pulse durationè
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.
Requirement
Vacuum generator is in operation
Procedure without automatic ejector pulse (1PD)
1. Completely screw in flow control screw for regulation of the ejector pulse.
2. Switch on vacuum generation.
ÄNegative pressure is generated at the vacuum port (2).
3. Switch off vacuum generation.
Commissioning
33Festo — OVEM — 2020-05h
5. Press the EDIT button.
Ä[NO] or [NC] flashes.
6. Set the switching characteristic [NO/NC] with the A or B pushbutton.
7. Press the EDIT button.
ÄRUN mode is active.
9.5 Teach-in switching point
The air saving function is automatically deactivated during teach-in. If the pressure differential
between the teach points is too low, teach-in will not work.
The process is the same for teach-in of switching outputs Out A (A pushbutton) and Out B (B pushbut-
ton). The process is described below using switching output Out A as an example.
Requirements
RUN mode is active.
Switching function is set.
Security code is not active.
Procedure
Object gripped or object not gripped – the sequence is freely selectable.
1. Set the vacuum for the first teach point.
2. Press the A pushbutton and the EDIT button simultaneously.
Ä TEACH mode is active.
Air saving function is deactivated.
Measured value will then be taken as first teach point (TP1).
[A] and [TeachIn] flash.
3. Set the vacuum for the second teach point (TP2).
4. Press the A pushbutton and the EDIT button simultaneously.
Ä Measured value is taken as second teach point (TP2).
Switching points (SP or SPmin and SPmax) are valid.
Air saving function is activated.
RUN mode is active.
The hysteresis is adjusted to the teach-in values. Set hysteresis
( 9.2 Configuring switching outputs).è
Recommendation: check the teach-in values in a test run.
9.6 Deleting minimum or maximum pressure value
Requirements
RUN mode is active.
Operation and use
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