OVEM-05-H-B-QO-ON-N-2P - Compressor Festo - Free user manual and instructions

Product Type	Vacuum Generator (Compressor)
Brand	Festo
Model	OVEM-05-H-B-QO-ON-N-2P
Category	Compressor
Nozzle Nominal Width	0.45 mm
Operating Pressure	2…8 bar
Pressure Measuring Range	-1…0 bar
Overload Pressure at Vacuum Port	≤5 bar
Nominal Operating Voltage	24 V DC ±15%
Max. Output Current per Switching Output	100 mA
Switching Outputs	2 PNP
Switching Inputs	1 digital (suction)
Display	4-digit alphanumeric LCD with segment bars
Protection Class	III (PELV)
Degree of Protection	IP65
Ambient Temperature	0…50 °C
Housing Material	Die-cast aluminium, PA reinforced
Seal Material	NBR, HNBR
Mounting	Direct mounting (side or back), H-rail, or mounting bracket
Certifications	c UL us listed (OL), RCM, KC
Air Saving Function	Yes (reduces air consumption during evacuation)
Auto-Drop Function	Yes (automatic ejector pulse after suction signal change)
Diagnostics	Monitors evacuation/pressurisation times, error codes displayed
Manual Override	Mechanical and electrical

Frequently Asked Questions - OVEM-05-H-B-QO-ON-N-2P Festo

What is the intended use of the Festo OVEM-05-H-B-QO-ON-N-2P?

The intended use is to generate a vacuum for handling workpieces, particularly in automated handling systems. It is designed for industrial environments and must be used with compressed air supply.

How do I set the ejector pulse duration?

Press the EDIT button, then press B button until [B] and segment L18 flash. Press EDIT again to see [msec] flashing. Use A and B buttons to set time (20...9999 ms) or OFF to deactivate. Hold EDIT for 3 seconds to save.

What is the air saving function and how do I enable it?

The air saving function reduces compressed air consumption by switching off vacuum generation when the set switching point is reached, using a check valve to maintain vacuum. To enable/disable, go to EDIT mode, press A until display shows [Option] flashing, then toggle with A or B between ON/OFF.

How do I teach-in switching points?

Grip the workpiece or leave it ungripped for the first teach point. Press A and EDIT simultaneously to accept TP1. Then change vacuum condition and press same buttons for TP2. Switching points are automatically calculated. The air saving function is deactivated during teach-in.

How do I restore factory settings?

Switch off power, then press and hold A + B + EDIT buttons simultaneously. Switch on power while holding buttons, release when display shows ' ' (blank). All parameters, including security code, revert to factory defaults.

What do error codes like Er01 or Er34 mean?

Error codes appear on the display. Er01 indicates a hardware error – replace the device. Er34 means evacuation time exceeded in 2 of 5 cycles – check for leaks. Full list in Chapter 11 of the manual.

How do I maintain the vacuum generator?

Regularly clean the device with non-abrasive agents. Check the air filter through the inspection window, and replace if dirty. To replace, pull the gate valve to first detent, remove filter, clean or replace, then push gate valve back in.

What is the required electrical connection?

The vacuum generator uses a 5-pin M12 connector. Supply voltage is 24 V DC ±15% on pin 1 (brown). Pin 3 (blue) is 0 V. Digital outputs on pin 2 (white) and pin 4 (black), digital input on pin 5 (grey). Use PELV circuits only.

How do I configure switching outputs Out A and Out B?

In RUN mode, press EDIT then A or B to select output. Press EDIT again to choose switching function (threshold or window comparator). Then set switching point, hysteresis, and logic (NO/NC). Confirm each step with EDIT. Hold EDIT to exit.

Can I use the device in a common supply manifold?

Yes, the OVEM-...-B/-BN variant can be mounted on a common supply manifold with up to 8 stations. The OVEM-...-C variant allows up to 4 stations. Refer to manifold assembly instructions OABM-P.

USER MANUAL OVEM-05-H-B-QO-ON-N-2P Festo

Technical line drawing of a mechanical device with mounting holes and internal components (no text or symbols)

FESTO

Operating instructions

8125662

2020-05h

[8125664]

Translation of the original instructions

Table of contents

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

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

1 About this document

1.1 Applicable documents

All available documents for the product → 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 implement 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	c US LISTED

Further 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 → www.festo.com/catalogue.

– Spare parts → www.festo.com/spareparts.

4 Service

Contact your regional Festo contact person if you have technical questions → www.festo.com.

5 Product overview

5.1 Product design

1 Solenoid valve for ejector pulse (Eject)
2 Solenoid valve for vacuum
3 Mechanical manual override of the solenoid valves
4 Supply port (1)
5 Exhaust port/silencer (3)
6 Vacuum port (6)
7 Housing with mounting holes

Fig. 1 Operating elements and connections

8 Gate valve for changing the filter
9 Filter housing with inspection window
10 Flow control screw for regulation of the ejector pulse
11 Vacuum sensor with LCD display and operating buttons → Fig.2
12 Electrical connection
13 Size OVEM-...-C

i

Filter housing with inspection window only with OVEM-...-B/-BN

5.1.1 Product variants

Product variant Code Meaning
Vacuum generator OVEM Vacuum generator with solenoid valve and manual over-ride
Nominal width of Laval nozzle	-05 0.45 mm
	-07 0.7 mm
	-10 0.95 mm
	-14 1.4 mm
	-20 2.0 mm
	-30 3.0 mm
	-H high negative pressureVacuum type
	-L high suction volume
Housing size/width	-B 20 mm wide, ISO standard
	-BN 20 mm wide, NPT
	-C 36 mm wide, ISO standard
Pneumatic ports		all ports with QS push-in fittings (-B-QS/-C-QS)-QS
		all ports with QS push-in fittings inch (-BN-QS)
	-QO	Supply/vacuum port with QS push-in fittings, exhaust port with open silencer (-B-QO/-C-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)
	-GO	Supply/vacuum port with G female thread, exhaust port with open silencer (-B-GO/-C-GO)
		Supply/vacuum port with NPT female thread, exhaust port with open silencer (-BN-GO)
	-PL	prepared for common supply manifold, vacuum and exhaust port with QS push-in fittings (-B-PL/-C-PL)
		prepared for common supply manifold, vacuum and exhaust port with QS push-in fittings inch (-BN-PL)
	-PO	prepared for common supply manifold, vacuum port with QS push-in fittings, exhaust port with open silencer (-B-PO/-C-PO)
		prepared for common supply manifold, vacuum port with QS push-in fittings inch, exhaust port with open silencer (-BN-PO)
Normal position of the vacuum generator	-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
	-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

5.1.2 Display components

graph TD
    A["Component A"] --> B["Component B"]
    B --> C["msec"]
    C --> D["SP"]
    C --> E["HY"]
    C --> F["min"]
    C --> G["max"]
    C --> H["NO"]
    C --> I["NC"]
    C --> J["Teach In"]
    C --> K["Option"]
    C --> L["Lock"]
    M["Component B"] --> N["Edit"]
    N --> O["A"]
    N --> P["C"]
    N --> Q["B"]
    R["Component A"] --> S["Edit"]
    S --> T["A"]
    S --> U["C"]
    S --> V["B"]
    W["Component B"] --> X["Edit"]
    X --> Y["A"]
    W --> Z["C"]
    W --> AA["B"]

1 Display segment switching output Out A
2 Display segment switching output Out B (except OVEM-...-1PD)
3 Display segment switching input In A1 (except OVEM-...-1PD)
4 4-digit alphanumeric display
5 Toolbar for functions

6 Segment bar right: graphic display of the current status of the digital inputs or valve status
7 B pushbutton
8 A pushbutton
9 EDIT button
10 Segment bar left: graphic display of the current 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
J	Window comparator selected
"[SP]" + "[min]" lower switching point	switching point
"[SP]" + "[max]" upper switching point	switching point
"[HY]" Hysteresis
"[NO]/"[NC]" Switching	logic N/O contact (normally open) / N/C contact (normally closed)
"[TeachIn]" Teach function (teach-in) active
"[Option]" Air saving function active
"[Lock]" Security code active
	Segments display the following:– current status of the digital inputs– current valve status→ Tab. 5 OVEM-...-2P/-2N/PU/PI: additional displays of segment bars – examples and→ Tab. 6 OVEM-...-1PD: additional displays of segment bars – examples

Tab. 4 Symbols in display

Display	Description
	Segment L10 is lit Vacuum solenoid valve is switched.
	Segment L14 is lit Ejector pulse solenoid valve is switched.
	Segment L17 + "[A]" lit and "[min]" flashing	Minimum pressure value display
	Segment L17 + "[A]" lit and "[max]" flashing	Maximum pressure value display
	Segment L18 + "[B]" lit and "[msec]" + "[_|~]l_" flashing	Duration of ejector pulse
	Segments L1, L3, L4, L5 lit and Diagnostics of evacuation and pressurisation 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]" flashing	Display/setting of evacuation time critical limit value
	"[msec]" + "[_|~]" + "[SP]" + "[max]" flashing	Display/setting of pressurisation time critical limit value
	Segments L1, L2, L5, L6 lit and display " "- "[Option]" flashing	Setting of air saving function (EDIT mode)"": air saving function active": air saving function not active
	Segments L1, L2, L5, L6 lit and "[Lock]" flashing	Setting the security code (1...9999): security code is not active
	Segment L10 + "[B]" lit + display " " additional function of the electrical manual override via operating buttonsVacuum solenoid valve switched
	Segment L14 + "[B]" lit + display " " additional function of the electrical manual override via operating buttonsEjector pulse solenoid valve (Eject) switched
Display Description
		Segment L10 is lit Vacuum solenoid valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valve is switched.
		Valv
	Segments L1, L2, L5, L6 lit and display " - "[Option]" flashing	Setting of air saving function (EDIT mode)"": air saving function active": air saving function not active
	Segments L1, L2, L5, L6 lit and "[Lock]" flashing	Setting the security code (1...9999): security code is not active
	Segment L10 + "[B]" lit + display " "	additional function of the electrical manual override via operating buttons. Vacuum solenoid valve switched
	Segment L12 + "[B]" lit + display " "	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

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 diagnostics 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→5.2.2 Valve control	x	x
Air saving function→5.2.3 Air saving function x x
Electrical and mechanical manual override→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	x	x
Auto-drop function:Generation of an automatic ejector pulse/power ejector pulse for accelerated vacuum purging and safe set-down→5.2.2 Valve control	x	-
Generation of an ejector pulse/power ejector pulse via a control signal at the digital switching input (Eject) DI2	-	x

Tab. 7 Function overview

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 outputs can be configured via the switching functions. The switching mode of the switching outputs can be set as threshold value or window comparators.

Threshold value comparator Normally open (N/O contact) Normally closed (N/C contact)
Switching function:– 1 switching point (SP1)TEACH mode1):– 2 teach points (TP1, TP2)– SP1 = 1/2 (TP1+TP2)

1) TP1 = minimum pressure value, TP2 = maximum pressure value, independent of the teach-in sequence Tab. 8 Threshold value comparator: setting of switching point SP1 and hysteresis HY

Window comparator Normally open (N/O contact) Normally closed (N/C contact)
Switching function:– 2 switching points (SP1, SP2)TEACH mode1):– 2 teach points (TP1, TP2)

1) TP1 = minimum pressure value, TP2 = maximum pressure value, independent of the teach-in sequence Tab. 9 Window comparator: setting of switching points SP1, SP2 and hysteresis HY

Code Switching output A Switching output B Switching inputs
-1PD Switching output positive switching pressure sensor output A		-2 switching inputs, positive	switching
-2P Switching output positive switching pressure sensor output A		Switching output positive switching pressure sensor output B or diagnostic message channel	Switching input positive switching
-2N Switching output negativeswitching pressure sensoroutput A		Switching output negativeswitching pressure sensoroutput B or diagnostic mes-sage channel	Switching input negativeswitching
-PI Switching output positiveswitching pressure sensoroutput A		Analogue output 4 ... 20 mAvacuum	Switching input positiveswitching
-PU Switching output positiveswitching pressure sensoroutput A		Analogue output 0 ... 10 Vvacuum	Switching input positiveswitching

Tab. 10 Switching output and switching input variants

5.2.2 Valve control

Control of the ejector pulse

- Auto-drop function (except for OVEM-...-1PD)

The ejector pulse is generated after the “Suction” signal change.

The duration of the ejector pulse can be set→ 9.1 Setting the ejector pulse duration.

- Signal-controlled ejector pulse/power ejector pulse (OVEM-...-1PD only)

The ejector pulse is generated via a control signal at the digital switching input (ejection) DI2. The duration of the ejector pulse can be set via the duration of the control signal at the digital switching input (ejector) DI2. The vacuum solenoid valve or the ejector pulse solenoid valve is controlled as defined by the input signal.

i

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.

Product overview

graph TD
    A["1"] --> B["Step 1"]
    B --> C["Step 2"]
    C --> D["Step 3"]
    D --> E["Step 4"]
    E --> F["Step 5"]
    F --> G["Auto-Drop t_ab"]
    style A fill:#f9f,stroke:#333
    style G fill:#bbf,stroke:#333

graph TD
    A["1"] --> B["2"]
    B --> C["3"]
    C --> D["4"]
    D --> E["5"]
    E --> F["Auto-Drop t_ab"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style F fill:#f9f,stroke:#333

graph TD
    A["1"] --> B["2"]
    B --> C["3"]
    C --> D["4"]
    D --> E["5"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333

1 Control signal at the digital switching input (suction) DI1

2 Control signal at the digital switching input (ejection) DI2 (only OVEM-...-1PD)

3 Switching position of vacuum solenoid valve

4 Switching position of ejector pulse solenoid valve

5 Vacuum 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

Fig. 4 Mode of operation of the air saving function

If the pressure value has reached switching point SP1 2, vacuum generation is deactivated. An internal check valve prevents reduction of the vacuum. Vacuum can still be reduced slowly due to leakage in the overall system (e.g. due to rough workpiece surfaces). To reduce power consumption, vacuum generation is not switched on until it falls below the lower threshold value 3.

The air saving function is activated in the factory.

If air-permeable workpieces are transported, the vacuum is reduced more quickly, which would cause the vacuum generation to switch unnecessarily often. In this case, it makes sense to deactivate the air saving function 9.14 Switching air saving function on or off.

5.2.4 Optimisation of the transport time

The transport time can be optimised for variants with 2 switching outputs (OVEM-...-2P/-2N/-PU/-PI) by using switching output Out B.

The vacuum required for the transport is controlled by switching output Out A. To optimise the transport time, the workpiece can e.g. be gripped by the usable vacuum while the vacuum is building up.

The minimum usable vacuum required is monitored by switching output Out B.

5.2.5 Monitoring and diagnostics

The vacuum generator has monitoring functions that enable early detection of malfunctions or faults during operation.

- Monitoring of process parameters (pressure value at the vacuum connection, switching points, switching outputs and switching inputs, evacuation time t_E , pressurisation time t_B and critical limit values)

– Diagnostic messages → 11.1 Diagnostic levels

Product overview

– Fault detection → 11 Fault clearance

The diagnostic messages are shown on the display.

Switching output Out B can also be set as a diagnostic message channel (dl 1 or dl 2) for variants with 2 switching outputs (OVEM-...-2P/-2N)→ 9.4 Set diagnostic message channel.

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.

5.2.6 Measured variables

Pressure value (vacuum)

The pressure value (vacuum) between the vacuum port and filter is continuously measured.

i

In the OVEM-...-20/30-C, the pressure value (vacuum) between the filter and the check valve is continuously monitored.

The minimum and maximum measured pressure values are saved. If the operating voltage of the vacuum 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 evacuation.

Evacuation time and pressurisation time

The evacuation time t_E is measured from the start of evacuation until switching point SP1 of the switching output is reached.

The pressurisation time t_B is measured from the start of pressurisation up to the time at which the pressure value (vacuum) falls below -50 mbar.

Product overview

Fig. 5 Cycle time - example for Out A (air save)

The displayed sequence of the switching statuses and control signals applies to all product variants except OVEM-...-1PD. Sequence for OVEM-...-1PD Fig.3

5.2.7 Teach function

The Teach function enables configuration of the switching points and time monitoring during runtime.

Static teach-in

Depending on the Teach command, one switching point (SP) or 2 switching points (SP1, SP2) are determined from 2 teach points. The switching points are determined statically, that is, the measurement value remains constant during the entire teach-in procedure. The air saving function is deactivated during execution of the teach-in procedure.

Dynamic teach-in

Setpoint values are calculated within the teach-in procedure from a time period. The procedure is used to determine evacuation and air supply times. Fig.6

After the start of the teach-in, time t_E and t_B are measured at every cycle. The times are averaged over multiple cycle times. At the end of the teach-in, a function reserve of 100% is added to the averaged values.

Product overview

1 Transport time

4 Cycle time 2

2 Return time

5 Cycle time N

3 Cycle time 1

Fig. 6 Mode of operation of dynamic teach-in - example OVEM-...-CE/-CPE

5.2.8 Operating statuses and menu structure

Meaning of symbols for representing the menu structure

Symbol Meaning
	Branching
	Error display
	Reset values
	Cycle
	Vacuum solenoid valve switched
	Ejector pulse solenoid valve switched
	Teach point is accepted
	Special menu (SPEC) is active (setting air saving function, security code, max. evacuation and max. air supply time)

Tab. 11 Meaning of symbols for representing the menu structure

RUN mode

– Basic status after the operating voltage is applied
- Display of the current measured value (relative pressure)
– Display of the signal statuses of the solenoid valves
– Display of the selected inputs and outputs

SHOW mode

• Display of the current settings
  – Display and delete minimum and maximum pressure values
• Display and delete minimum and maximum evacuation and pressurisation time
• Display of diagnostic messages

graph TD
    A["RUN-mode"] --> B{CE/OE OPTION}
    B -->|Yes| C["SP min 0.00"]
    B -->|No| D["SP max 0.00"]
    C --> E["HY 0.00"]
    D --> E
    E --> F["min 0.00 In A1"]
    F --> G["Max 0.00 In A1"]
    G --> H["A"]
    G --> I["Clear"]
    H --> J["Clear"]
    J --> K["Clear"]
    L["Timeout"] --> M{CE/OE Options}
    M -->|Yes| N["SP min 0.00"]
    M -->|No| O["SP max 0.00"]
    N --> P["HY 0.00"]
    O --> P
    P --> Q["CE/OE"]
    Q --> R["msec min 0.00"]
    R --> S["msec max 0.00"]
    S --> T["Clear"]
    T --> U["Clear"]
    V["Timeout"] --> W{CE/OE Options}
    W -->|Yes| X["SP min 0.00"]
    W -->|No| Y["SP max 0.00"]
    Y --> Z["HY 0.00"]
    Z --> AA["msec min 0.00"]
    AA --> AB["msec max 0.00"]
    AB --> AC["Clear"]
    AC --> AD["Clear"]
    AE["NO TIMEOUT"] --> AF["Clear"]
    AG["Start"] --> AH["End"]

1 Submenu only available with
OVEM-...-2P/-2N/-PU/-PI

Fig. 7 Menu structure for SHOW mode

EDIT mode

• Setting of parameters
• Operation of the electrical manual override (FORC)

graph TD
    A["RUN-mode"] --> B["EDIT(Cancel)"]
    B --> C{IS}
    C -->|A B| D["EDIT"]
    C -->|B| E["EDIT"]
    D --> F["SP Option"]
    F --> G["EDIT"]
    G --> H["HY Option"]
    H --> I["EDIT"]
    I --> J["NO"]
    J --> K["EDIT"]
    K --> L["NC"]
    L --> M["EDIT"]
    M --> N["SP min"]
    N --> O["EDIT"]
    O --> P["SP max"]
    P --> Q["EDIT"]
    Q --> R["HY"]
    R --> S["EDIT"]
    S --> T["NO"]
    T --> U["EDIT"]
    U --> V["SP min"]
    V --> W["EDIT"]
    W --> X["SP max"]
    X --> Y["EDIT"]
    Y --> Z["NO"]
    Z --> AA["EDIT"]
    AA --> AB["SP min"]
    AB --> AC["EDIT"]
    AC --> AD["SP max"]
    AD --> AE["EDIT"]
    AE --> AF["NO"]
    AF --> AG["EDIT"]
    AG --> AH["SP min"]
    AH --> AI["EDIT"]
    AI --> AJ["SP max"]
    AJ --> AK["EDIT"]
    AK --> AL["NO"]
    AL --> AM["EDIT"]
    AM --> AN["SP min"]
    AN --> AO["EDIT"]
    AO --> AP["SP max"]
    AP --> AQ["EDIT"]
    AQ --> AR["NO"]
    AR --> AS["EDIT"]
    AS --> AT["SP min"]
    AT --> AU["EDIT"]
    AU --> AV["SP max"]
    AV --> AW["EDIT"]
    AW --> AX["NO"]
    AX --> AY["EDIT"]
    AY --> AZ["SP min"]
    AZ --> BA["EDIT"]
    BA --> BB["SP max"]
    BB --> BC["EDIT"]
    BC --> BD["NO"]
    BD --> BE["EDIT"]
    BE --> BF["SP min"]
    BF --> BG["EDIT"]
    BG --> BH["SP max"]
    BH --> BI["EDIT"]
    BI --> BJ["NO"]
    BJ --> BK["EDIT"]
    BK --> BL["SP min"]
    BL --> BM["EDIT"]
    BM --> BN["SP max"]
    BN --> BO["EDIT"]
    BO --> BP["NO"]
    BP --> BQ["EDIT"]
    BQ --> BR["SP min"]
    BR --> BS["EDIT"]
    BS --> BT["SP max"]
    BT --> BU["EDIT"]
    BU --> BV["NO"]
    BV --> BW["EDIT"]
    BW --> BX["SP min"]
    BX --> BY["EDIT"]
    BY --> BZ["SP max"]
    BZ --> CA["EDIT"]
    CA --> CB["NO"]
    CB --> CC["EDIT"]
    CC --> CD["SP min"]
    CD --> CE["EDIT"]
    CE --> CF["SP max"]
    CF --> CG["EDIT"]
    CG --> CH["NO"]
    CH --> CI["EDIT"]
    CI --> CJ["SP min"]
    CJ --> CK["EDIT"]
    CK --> CL["SP max"]
    CL --> CM["EDIT"]

1 Submenu only available with OVEM-...-CE/-OE/-CPE/-OPE
Fig. 8 EDIT mode menu structure

Assembly

TEACH mode

- Acceptance of the current measured value to determine switching points

graph TD
    A["RUN-mode"] --> B["EDIT(Cancel)"]
    B --> C["→3s"]
    C --> D["TP1"]
    D --> E["A + EDIT"]
    E --> F["0.00 EDIT"]
    F --> G["TEACH IN 1"]
    G --> H["TP 2"]
    H --> I["A + EDIT"]
    I --> J["TP 2"]
    J --> K["B + EDIT"]
    K --> L["TEACH IN"]
    L --> M["0.00 EDIT"]
    M --> N["TEACH IN"]
    N --> O["0.00 EDIT"]
    O --> P["TEACH IN"]
    P --> Q["0.00 EDIT"]
    Q --> R["TEACH IN"]
    R --> S["0.00 EDIT"]
    S --> T["TEACH IN"]
    T --> U["0.00 EDIT"]
    U --> V["TEACH IN"]
    V --> W["0.00 EDIT"]
    W --> X["TEACH IN"]
    X --> Y["0.00 EDIT"]
    Y --> Z["TEACH IN"]
    Z --> AA["0.00 EDIT"]
    AA --> AB["TEACH IN"]
    AB --> AC["0.00 EDIT"]
    AC --> AD["TEACH IN"]
    AD --> AE["0.00 EDIT"]
    AE --> AF["TEACH IN"]
    AF --> AG["0.00 EDIT"]
    AG --> AH["TEACH IN"]
    AH --> AI["0.00 EDIT"]
    AI --> AJ["TEACH IN"]
    AJ --> AK["0.00 EDIT"]
    AK --> AL["TEACH IN"]
    AL --> AM["0.00 EDIT"]
    AM --> AN["TEACH IN"]
    AN --> AO["0.00 EDIT"]
    AO --> AP["TEACH IN"]
    AP --> AQ["0.00 EDIT"]
    AQ --> AR["TEACH IN"]
    AR --> AS["0.00 EDIT"]
    AS --> AT["TEACH IN"]
    AT --> AU["0.00 EDIT"]
    AU --> AV["TEACH IN"]
    AV --> AW["0.00 EDIT"]
    AW --> AX["TEACH IN"]
    AX --> AY["0.00 EDIT"]
    AY --> AZ["TEACH IN"]
    AZ --> BA["0.00 EDIT"]
    BA --> BB["TEACH IN"]
    BB --> BC["0.00 EDIT"]
    BC --> BD["TEACH IN"]
    BD --> BE["0.00 EDIT"]
    BE --> BF["TEACH IN"]
    BF --> BG["0.00 EDIT"]
    BG --> BH["TEACH IN"]
    BH --> BI["0.00 EDIT"]
    BI --> BJ["TEACH IN"]
    BJ --> BK["0.00 EDIT"]
    BK --> BL["TEACH IN"]
    BL --> BM["0.00 EDIT"]
    BM --> BN["TEACH IN"]

1 Submenu only available with OVEM-...-2P/-2N

Fig. 9 TEACH mode menu structure

6 Assembly

i

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.

Assembly

Direct mounting

Fig. 10 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. 12 Size and tightening torque of the screws for direct mounting on the side

Technical line drawing of a mechanical component with multiple ports and mounting holes (no text or symbols)

Fig. 11 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. 13 Size and tightening torque of the screws with direct mounting on the back

H-rail mounting

i

Type of mounting permissible only for sizes OVEM-...-05/-07/-10/-14/-20-...-B/-BN

H-rail mounting accessories → www.festo.com/catalogue

1 H-rail mounting

Technical line drawing of a mechanical assembly with no visible text or symbols

2 Screw

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

i

Type of mounting permissible only for sizes OVEM-...-05/-07/-10/-14/-20-...-B/-BN

Accessories for mounting bracket → www.festo.com/catalogue

Technical line drawing of a mechanical device with mounting holes and two separate parts (no text or symbols)

Fig. 13 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. 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/sp

7 Installation

7.1 Pneumatic installation

Variant Circuit symbol Variant Circuit symbol
OVEM-...-QO-CNOVEM-...-GO-CN		OVEM-...-QO-CEOVEM-...-GO-CE
OVEM -...- QO-CPEOVEM -...- GO-CPE		OVEM -...- QO-CPEOVEM -...- GO-CPE
OVEM-...-QS-CNOVEM-...-GN-CN		OVEM-...-QS-CEOVEM-...-GN-CE
OVEM -...- QS-CPEOVEM -...- GN-CPE		OVEM -...- QS-CPEOVEM -...- GN-CPE
OVEM-...-QO-ONOVEM-...-GO-ON		OVEM-...-QO-OEOVEM-...-GO-OE
OVEM -...- QO-OPEOVEM -...- GO-OPE		OVEM -...- QO-OPEOVEM -...- GO-OPE
OVEM-...-QS-ONOVEM-...-GN-ON		OVEM-...-QS-OEOVEM-...-GN-OE
OVEM -...- QS-OPEOVEM -...- GN-OPE		OVEM -...- QS-OPEOVEM -...- GN-OPE

Tab. 15 Circuit symbols, pneumatic

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 1

1

- Exhaust port 2

3 3 4 4

5 5.5 6

6 7 9 1

1

Tab. 16 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

→ Tab. 16 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

→ www.festo.com/catalogue.

- Recommendation: Use type PUN tubes 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 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 colour		1)	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 colour		1)	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 colour		1)	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 s	witching	input (ejection) (PNP)
	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
OVEM without vacuum sensor

Tab. 21 Circuit diagrams for vacuum generator

8 Commissioning

i

Commissioning by qualified personnel.

8.1 Commissioning the vacuum generator

At initial commissioning, the vacuum generator is placed in operation with the factory settings

→ Tab. 22 Factory settings.

Requirement

Vacuum generator is fully mounted and connected 6 Assembly.

Checking operating conditions

- Check operating conditions and critical limits 14 Technical data.

Commissioning the vacuum generator OVEM-...-OE/-OPE

1. Apply operating pressure to supply port (1).

Negative pressure is generated at the vacuum port (2).

1. Switch on the operating voltage.

The 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.

Negative 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 mode

-by teach-in TEACH mode

8.2 Setting the intensity of the ejector pulse

Technical diagram showing a mechanical component being inserted into a device, with no visible text or symbols.

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 10 completely

The channel for the ejector pulse is closed. An ejector pulse is not generated.

1. Switch on vacuum generation.

Negative pressure is generated at the vacuum port.

1. Switch off vacuum generation.

2. Unscrew flow control screw slightly.

An automatic ejector pulse is generated. If an automatic ejector pulse is not generated, operate the mechanical manual override of the ejector pulse solenoid valve.

1. Screw the flow control screw out or in to adjust the ejector pulse to the required intensity.

i

Setting the ejector pulse duration 9.1 Setting the ejector pulse duration

i

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.

Negative pressure is generated at the vacuum port (2).

1. Switch off vacuum generation.

2. Switch on solenoid valve for ejector pulse.

An ejector pulse is not generated.

1. Switch off solenoid valve for ejector pulse.

2. Slightly unscrew the flow control screw to regulate the ejector pulse.

3. Switch on solenoid valve for ejector pulse.

An ejector pulse is generated.

1. Repeat steps 1 to 7 until the required intensity of the ejector pulse is set.

i

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

Additional information on operating statuses and menu structure

→ 5.2.8 Operating statuses and menu structure

9.1 Setting the ejector pulse duration

Requirements

- RUN mode is active.

– Security code is not active.

Processing

1. Press the EDIT button.

[A] flashes and EDIT mode is active.

1. Press B pushbutton.

[B] + segment L18 flash.

1. Press the EDIT button.

[msec], [_l^-] and [^-l_] flash.

1. Set time (in ms) with the A button and the B button. To deactivate the ejector pulse, set to OFF.

2. Press and hold the EDIT button for 3 seconds.

RUN mode is active.

i

When large suction grippers are used, a vacuum independent of the device may be built up for physical reasons. The result is that the workpiece may not be released from the suction gripper, even if the ejector pulse is set to a sufficiently long duration.

9.2 Configuring switching outputs

Display settings of the switching outputs

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The process for displaying the settings of the switching outputs Out A (A-pushbutton) and Out B (B-pushbutton) is basically identical. In addition, the configuration of the switching output and the duration of the ejector pulse is displayed for switching output Out B. The process is described below using switching output Out A as an example.

Requirement

- RUN mode is active.

Processing

1. Press the A pushbutton.

SHOW mode is active. The error number is displayed in case of errors.

1. Press the A pushbutton.

The following settings will be displayed:

- switching function (threshold value comparator or window comparator)

- Switching points [SP] or [SP][min].

– Switching characteristic [NO/NC]

1. Press the A pushbutton.

Only with Window comparator switching function: switching point [SP], [max] is displayed.

- Press the A pushbutton.

– Hysteresis [HY] is displayed.

1. Press the A pushbutton.

Minimum pressure value is displayed.

1. Press the A pushbutton.

Maximum pressure value is displayed.

1. Press the A pushbutton.

RUN mode is active.

9.3 Setting the switching characteristics of a switching output

i

The process for setting the switching outputs Out A (A-pushbutton) and Out B (B-pushbutton) is basically identical. The switching output Out B must also be defined as switching output In A1, because Out B can also be configured as a diagnostic message channel 9.4 Set diagnostic message channel. The process is described below using switching output Out A as an example.

Requirements

- RUN mode is active.

- Switching output Out B is defined as switching output In A1.

– Security code is not active.

Processing

1. Press the EDIT button.

[A] flashes. EDIT mode is active.

1. Press B pushbutton.

[B] flashes.

1. Press the EDIT button.

Display

1. Press the EDIT button.

The currently set switching function flashes (threshold value comparator or window comparator).

1. Set switching function using the A or B pushbutton.

2. Press the EDIT button.

[SP] flashes (threshold value comparator) or [SP], [min] flashes (window comparator).

1. Set switching point (SP or SPmin) with the A or B pushbutton.

2. Press the EDIT button.

Only with switching function window comparator: [SP], [max] flashes.

- Set switching point (SPmax) with the A or B pushbutton.

- Press the EDIT button.

→ [HY] flashes.

1. Set hysteresis [HY] with the A or B pushbutton.

2. Press the EDIT button.

[NO] or [NC] flashes.

1. Set the switching characteristic [NO/NC] with the A or B pushbutton.

2. Press the EDIT button.

RUN mode is active.

9.4 Set diagnostic message channel

i

If switching output Out B is set as diagnostic message channel (dl 1 or dl 2), switching output Out B can no longer be used as switching output In A1.

Requirements

- RUN mode is active.

– Security code is not active.

Processing

1. Press the EDIT button.

[A] flashes. EDIT mode is active.

1. Press B pushbutton.

[B] flashes.

1. Press the EDIT button.

If Out B is defined as switching output, is displayed.

1. Set the diagnostic message channel (dl 1 or dl 2) using the A or B pushbutton.

Operation and use

1. Press the EDIT button.

[NO] or [NC] flashes.

1. Set the switching characteristic [NO/NC] with the A or B pushbutton.

2. Press the EDIT button.

RUN mode is active.

9.5 Teach-in switching point

i

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.

i

The process is the same for teach-in of switching outputs Out A (A pushbutton) and Out B (B pushbutton). 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.

- TEACH mode is active.

– Air saving function is deactivated.
- Measured value will then be taken as first teach point (TP1).
– [A] and [TeachIn] flash.

1. Set the vacuum for the second teach point (TP2).
2. Press the A pushbutton and the EDIT button simultaneously.

- 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.

i

The hysteresis is adjusted to the teach-in values. Set hysteresis

(→ 9.2 Configuring switching outputs).

Recommendation: check the teach-in values in a test run.

9.6 Deleting minimum or maximum pressure value

Requirements

- RUN mode is active.

Processing

1. Press the A pushbutton.

SHOW mode is active.

If there are errors, the error numbers are shown.

1. Repeatedly press the A pushbutton until the minimum pressure value is displayed.

2. Press the A pushbutton to see the next value.

Press the EDIT button to delete the minimum pressure value.

The minimum pressure value is deleted.

1. Press the A pushbutton.

Maximum pressure value is displayed.

1. Press the A pushbutton to return to RUN mode.

Press the EDIT button to delete the maximum pressure value.

The maximum pressure value is deleted.

1. Press the A pushbutton.

RUN mode is active.

9.7 Setting critical limits for the evacuation and air supply times

Requirements

- EDIT mode is active and [Out A] flashes.

– Security code is not active.

Processing

1. Press the A pushbutton.

Display

1. Press the EDIT button.

[Option] flashes.

1. Press the EDIT button.

[Lock] flashes.

1. Press the EDIT button.

[msec] + [ ^- | _ ] + [SP] + [max] flash.

1. Set the maximum evacuation time using the A pushbutton and B pushbutton.

[OFF]: evacuation time monitoring is not active.

1. Press the EDIT button.

[msec] + [SP] + [max] and [^-|_-] flash.

1. Set the maximum air supply time using the A pushbutton and B pushbutton.

[OFF]: air supply time monitoring is not active.

1. Press the EDIT button.

RUN mode is active.

9.8 Teaching evacuation and air supply time

Requirements

• RUN mode is active.
  – Security code is not active.
• Switching function is set.

Processing

1. Press the A and B pushbuttons and EDIT button simultaneously.

2. TEACH mode is active.
   – [TeachIn] and the diagnostics segments flash.

3. Measure at least one clock cycle.

i

An average is calculated from the measured cycles.

The more cycles are run the better the value. The teach-in values are applied with a function reserve of 100%.

1. Press the A pushbutton, B pushbutton and EDIT button.

RUN mode is active.

i

If the switching points or the intensity of the ejector pulse are changed, teach-in the evacuation and air supply times again.

Recommendation: check the teach-in values in a test run.

9.9 Displaying evacuation and air supply times

Requirement

- RUN mode is active.

Processing

1. Press A and B pushbuttons simultaneously.

2. SHOW mode is active.
   – Evacuation time critical limit is displayed.

3. Press A and B pushbuttons simultaneously.

Air supply critical limit is displayed.

1. Press A and B pushbuttons simultaneously.

Minimum evacuation time is displayed.

1. Press A and B pushbuttons simultaneously.

Maximum evacuation time is displayed.

1. Press A and B pushbuttons simultaneously.

Minimum air supply time is displayed.

1. Press A and B pushbuttons simultaneously.

Maximum air supply time is displayed.

1. Press A and B pushbuttons simultaneously.

RUN mode is active.

9.10 Deleting evacuation and air supply times

Requirements

- SHOW mode is active.

– Minimum evacuation time is displayed.

Operation and use

Processing

1. Press the A and B pushbuttons simultaneously to display the next value. Press the EDIT button to delete the displayed value.

2. Press A and B pushbuttons simultaneously.

RUN mode is active.

9.11 Mechanical manual override

Both solenoid valves can be manually switched with the manual override.

Technical line drawing of a mechanical assembly with no visible text or symbols

Fig. 15

1. Press in the plunger of the manual override with a blunt pin.

The solenoid valve switches.

1. Remove pin.

The plunger of the manual override is automatically reset. The solenoid valve returns to the initial position.

9.12 Electrical manual override

Requirements

- RUN mode is active.

– Security code is not active.

Procedure

1. Press the EDIT button.

- [A] flashes. - EDIT mode is active.

1. Press B pushbutton.

[B] flashes + segment L18 illuminated.

1. Press the EDIT button.

[msec], [_l^-] and [^-l_] flash. The duration of the ejector pulse is displayed.

1. Press the EDIT button.

◀ display. Electrical manual override is active.

1. Switch solenoid valves.

- Vacuum solenoid valve: press A pushbutton. - Ejector pulse solenoid valve: press B pushbutton.

Operation and use

1. Press the EDIT button to exit the submenu.

RUN mode is active.

9.13 Activating the security code

A security code can be set and activated to prevent changes by unauthorised persons.

- Factory setting: "OFF"

- The security code is reset when factory settings are restored.

Requirements

- RUN mode is active.

– Security code is not active.

Procedure

1. Press the EDIT button.

- [A] flashes. - EDIT mode is active.

1. Press the A pushbutton.

Display

1. Press the EDIT button.

[Option] flashes.

1. Press the EDIT button.

[Lock] flashes.

1. Set the security code with the A and B pushbuttons.

[OFF]: security code is not active.

1. Press and hold the EDIT button for 3 seconds.

RUN mode is active.

9.14 Switching air saving function on or off

Requirements

- EDIT mode is active and [Out A] flashes.

– Security code is not active.

Processing

1. Press the A pushbutton.

Display

1. Press the EDIT button.

[Option] flashes.

1. Switch the air saving function on or off using the A or B pushbutton.

– [ON]: air saving function active. – [OFF]: air-saving function not active.

1. Press and hold the EDIT button for 3 seconds.

RUN mode is active.

9.15 Restore factory settings

Restoring the factory settings resets the parameters, configuration and security code to the delivery status. → Tab. 22 Factory settings

The current settings are lost.

1. Switch off operating voltage.
2. Press and hold the A-pushbutton + B-pushbutton + EDIT button.
3. Switch on the operating voltage.
   Display
4. Release A-pushbutton + B-pushbutton + EDIT button.
   The factory settings are restored.

Factory settings

Parameter OVEM-...-H OVEM-...-L
Switching mode of the electrical output Threshold value comparator
Switching logic of the electrical output NO (normally open)
Air saving function Active
Security code OFF
	SP1 [bar] -0.7 -0.4Out A (air save)
	Hysteresis [bar] 0.25
Out A	SP1 [bar] -0.7 -0.4
	SP2 [bar] -0.97 -0.67
	Hysteresis [bar] 0.25 0.1
Out B^1)	SP1 [bar] -0.5 -0.2
	SP2 [bar] -0.71 -0.41
	Hysteresis [bar] 0.2 0.1
Duration of ejector pulse^1)	[ms] 200

1) parameter not available for OVEM-...-1PD
Tab. 22 Factory settings

10 Maintenance and care

Clean device

1. Switch off energy sources:

2. Operating voltage

3. Compressed air

4. Clean device with non-abrasive cleaning agents.

5. Check air filter through the display window for dirt.

Replace air filter

i

The air filter cannot be replaced in the vacuum generator OVEM-...-20/-30-C

Fault clearance

Fig. 16 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.

The gate valve pushes the filter into the vacuum generator.

11 Fault clearance

The diagnostic messages are shown as error code on the display. For variants with 2 switching outputs (OVEM-...-2P/-2N) one of the two logical channels of the switching output Out B can also be used as a diagnostic message channel 9.4 Set diagnostic message channel. The diagnostic message channel can be configured as a normally open (N/O contact) or a normally closed (N/C contact).

11.1 Diagnostic levels

There are 4 diagnostic levels. The backlight of the display shows red for messages of diagnostic levels 1 to 3.

Diagnostic level	Diagnostic message channel Description
0 no message Device is OK.
1 logical channel dl 1 is active no restriction in function yet but operating parameters are deteriorating

Diagnostic level	Diagnostic message channel Description
2 logical channel	dl 1 or dl 2 is active	Function still ensured, but with restrictions (e.g. higher power consumption).Emergency operation, maintenance urgently required.
3 logical channel	dl 1 or dl 2 is active	Function no longer ensured.All controllable outputs of the device are inactive.

Tab. 23 Diagnostic levels for switching output Out B and display

If the evacuation and pressurisation time is to be monitored, set the critical limits for the evacuation and pressurisation time 9.14 Switching air saving function on or off.

11.2 Error messages and error codes

Display Diagnostic level	Description Remedy
Er01 3 Hardware errors in device – Replace device.
Er17 3 Supply voltage is too high or too low (error)		– Check supply voltage.
Er20 2 permissible device temperature exceeded		– Keep device away from heat sources.
Er21 2 Short-circuit	Out A – Check output for overload.	– Check installation.
Er32 2 OVEM-...-1PD: Vacuum solenoid valve does not switch or does not switch correctly		– Press mechanical manual override several times.– Check supply voltage.– Replace device.
Er33 2	except for OVEM-...-1PD: Solenoid valve does not switch or does not switch correctly.Plunger does not move; current through solenoid coil is too low; short circuit in solenoid coil	– Press mechanical manual override several times.– Check supply voltage.– Replace device.
	OVEM-...-1PD: Ejector pulse solenoid valve does not switch or does not switch correctly

Fault clearance

Display Di- gnostic level	Description Remedy
Er34 1 Evacuation time exceeded in 2 of 5 cycles		- Check for leakage.
Er35 2 Evacuation time exceeded by a factor of two in 2 of 5 cycles
Er36 1 Air supply time exceeded in 2 of 5 cycles		- Check for leakage.- Extend air supply time.- Check throttle setting.
Er37 2 Air supply time exceeded in 2 of 5 cycles
Er38 2 Switching frequency of air saving function >1 Hz (warning)		- Check for leakage.
Er39 2	SP1 for Out A not reached after 10 s - Check for leakage.- Check compressed air supply.
	Switch-back threshold below specification (active air saving function and threshold value comparator)	- Check switching thresholds.- Check settings for Out A.- Check compressed air supply.
	upper trigger level above or lower trigger level below specification (window comparator)
Er40 2 Supply voltage too high (warning)		- Check supply voltage.
Er41 2 Supply voltage too low (warning)

Tab. 24 Error messages, error codes, diagnostic levels and error description

11.3 Malfunctions

Malfunction Possible cause	use Remedy
Workpiece is not released by the suction gripper	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 dimensions → 7.1 Pneumatic installation).
	Flow control screw closed - Open flow control screw.
Malfunction Possible cause	Remedy
Switching output does not react in accordance with the settings	Short circuit or overload at the output	- Eliminate short circuit/overload.
	Device faulty - Replace device.
	Incorrect switching point taught (e.g. at 0 bar)	Repeat teach procedure
No display	Operating voltage faulty - Apply perm	issible operating voltage→7.2 Electrical installation.
	Electrical connections swapped - Connect device correctly→7.1 Pneumatic installation.
	No control signal Check controller
	Device faulty - Replace device.
Incomplete display Display faulty - Replace device.
Pressure indicator incorrect	Pneumatic connections swapped - Connect device correctly→7.1 Pneumatic installation.
Settings cannot be edited, "[Lock]" is displayed	Security code is active - Enter the security code→9.13 Activating the security code.
"[min]" + "[max]" flashing simultaneously	Diagnostic level 1 active → 11.1 Diagnostic levels
Display + "[min]" + "[max]" flashing simultaneously	Diagnostic level 2 active → 11.1 Diagnostic levels
Display flashes and error code appears	Diagnostic level 3 active → 11.1 Diagnostic levels
"[Option]" flashing Air saving function deactivated because outside the limit value		- Check for leakage.

Tab. 25 Malfunctions

12 Disassembly

1. Switch off energy sources:

- Operating voltage

- Compressed air

1. Disconnect pneumatic and electrical connections from the device.
2. Loosen mountings and remove device.

13 Disposal

ENVIRONMENT!

Send the packaging and product for environmentally sound recycling in accordance with the current regulations → www.festo.com/sp.

14 Technical data

OVEM-... -05 -07/-10 -14/-20-B/-			BN	-20/-30-C
General
Approvals	c UL us - listed (OL)
	RCM compliance mark
	KC mark
Characteristic values
Operating pressure [bar] 2 ... 6 OVEM-...-QS/-GN/-PL
Operating pressure [bar] 2 ... 8 OVEM-...-QO/-GO/-PO
Pressure measuring range [bar]-1 ... 0
Overload pressure at [bar]≤ 5 vacuum port
Ready-state delay [ms]≤ 500
Dead time (evacuation [ms] and ejection)	< 10	≤ 20	≤ 35	≤ 60
Electronics
Nominal operating voltage [V DC] 24 ± 15 %
Max. output current [mA] 100 (per switching output)
Voltage drop (for all [V]≤ 1.5 switching outputs)
No-load supply current [mA] < 70
Coil characteristics 24 [W] 0.3 V DC - low current phase
Coil characteristics 24 [W] 2.55 V DC – high current phase
Time until current [ms] 80 reduction
Capacitive load maxim- [mF] ≤ 100 um DC
Overload protection Present
Inductive protective cir- cuit	adapted to MZ, MY, ME coils
Insulation voltage [V] 50
Surge resistance [kV] 0.8
Max. current consumption
OVEM-...-2P/-2N [mA] 270
OVEM-...-PI/-PU [mA] 180
OVEM-...-1PD [mA] 170
Accuracy [% FS] ± 3
Hysteresis [% FS] ± 0.1
Short circuit current rating	Yes
Reverse polarity pro- tection	For all electrical connections
Display/operation
Setting range threshold [bar]–0.9 values	99 ... 0
Hysteresis setting [bar]–0.9 range	... 0
Setting range ejector [ms] 20 ... pulse duration	9999 40 ...	9999
Environment
Ambient temperature [°C] 0 ...	50
Temperature of medi- [°C] um	0 ... 50

Technical data

OVEM-... -05 -07/-10 -14/-20-B/-		BN	-20/-30-C
Contamination level 3
Operating medium Compressed air to ISO 8573-1:2010 [7:4:4]
Note on the operating medium	Lubricated operation not possible
Shock resistance (in accordance 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 65	1)
Relative humidity [%] 5 ... 85
Interference emission as per EN 61000-6-4
Immunity to interference	as per EN 61000-6-2
Maximum permissible [m] 20 signal line length
Materials
Information on materials – seals	NBR HNBR
Information on materials – housing	Die-cast aluminium, PA reinforced Wrought alu-minium alloy
Information on materials – plug housing	Nickel-plated brass

1) Degree of protection has not been evaluated by UL
Tab. 26 Technical data

Copyright:

Festo SE & Co. KG

73734 Esslingen

Ruiter Straße 82

Germany

Phone:

[phone]

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