AVENTICS ECD-LV Compact ejector Instruction Manual

ECD-LV Compact ejector
**Instruction Manual

**

Operating instructions
ECD-LV R412025991/2019-03,
Replaces: 2019-03,

About this Documentation

These instructions contain important information for the safe and appropriate assembly and commissioning of the product.

• Read these instructions carefully, especially chapter 2 “Notes on safety”, before you start working with the product.

Documentation validity

• This documentation is valid for ECD-LV series compact ejectors.

Additional documentation

• Also follow the instructions for the other system components.
• Please also observe the generally relevant, statutory and other binding regulations of European and national legislation and the national regulations for accident prevention and environmental protection in your country.

For further information about IO-Link mode (R412026283) and an electronic device description (IO Device Description, IODD), please visit our Media Center at www.aventics.com/media-centre/
Use the search bar to search for: IO-Link (ECD-LV) or IODD
Presentation of information
Warnings
In this document, there are safety instructions before the steps whenever there is a danger of personal injury or damage to the equipment. The measures described to avoid these hazards must be followed.
Structure of warnings

SIGNAL WORD
Hazard type and source
Consequences of non-observance
Measures to avoid these hazards
Meaning of the signal words
DANGER
Indicates a hazardous situation which, if not avoided, will certainly result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injuries.
NOTICE
Indicates that damage may be inflicted on the product or the environment.
Symbols
**** Operation may be impaired if this information is disregarded.

Notes on safety

The product has been manufactured according to the accepted rules of current technology. Even so, there is a risk of injury or damage if the following general safety instructions and the specific warnings given in this instruction manual are not observed.

• Please read all these instructions carefully before working with the product.
• Keep these instructions in a location where they are accessible to all users at alltimes.
• Always include the operating instructions when you pass the product on to thirdparties.

Intended use

The ejector is exclusively intended for installation in a machine or system or for combination with other components to form a machine or system.

• Use is permitted only under the operating conditions and within the performancelimits listed in the technical data. Only use neutral gases in accordance with EN 983 as media.
• Exclusively use the ejector for vacuum generation in pneumatic systems.

Compact ejectors are intended for professional use only and not for private use. Compact ejectors may only be used for industrial applications (class A in accordance with DIN EN 55011). An individual license must be obtained from the authorities or an inspection center for systems that are to be used in a residential area (residential, business, and commercial areas).
Intended use includes having read and understood these instructions, especially chapter 2 “Notes on safety”.

Improper use

• Do not use the ejector in explosive areas.
• Do not use the ejector to suction fluids, aggressive or flammable gases, and bulk materials (e.g. granulate).

Personnel qualifications
Assembly, disassembly, commissioning, and maintenance (incl. service and care) require basic mechanical and pneumatic knowledge, as well as knowledge of the appropriate technical terms.
In order to ensure operational safety, these tasks may only be carried out by qualified personnel or an instructed person under the direction of qualified personnel.
Qualified personnel are those who can recognize possible hazards and institute the appropriate safety measures, due to their professional training, knowledge, and experience, as well as their understanding of the relevant regulations pertaining to the work to be done. Qualified personnel must observe the rules relevant to the subject area.
General safety instructions

• Observe the valid local regulations in the country of use to protect the environment and avoid workplace accidents.
• Only use AVENTICS products that are in perfect working order.
• Examine the product for obvious defects, such as cracks in the housing or missing screws, caps, or seals.
• Do not modify or convert the product.
• Opening the product will destroy the “tested” label. This voids the warranty.
• The warranty will not apply if the product is incorrectly assembled.
• Do not place any improper mechanical loads on the product under any circumstances.
• Generally protect the product from damage.
• Product warnings and information must be legible, i.e. not covered by paint, etc.
• No liability is assumed for damage caused by the use of non-original spare parts or accessories. All wear parts are excluded from warranty.

Safety instructions related to the product and technology
WARNING
Open vacuum/exhaust air connections and vacuum cup
Risk of injury by suctioning of eyes or other parts of the body.
Risk of injury due to exhaust air and any other parts and debris that may have been drawn in being emitted from the exhaust air connection at high speed.

• Never look into vacuum openings, neither suctioning or not suctioning (e.g. vacuum connections or connected vacuum cups).
• Never look into or enter the exhaust air stream.

On installation

• Make sure the relevant system component is not under pressure or voltage before assembling the product or when connecting and disconnecting plugs. Protect the system against being restarted.

• Lay cables and lines so that they cannot be damaged and no one can trip over them.

• Observe the connection symbols and connection designations on the ejector.

• Only use the designated connection options, mounting holes, and mounting material.

• Before commissioning, make sure that all the connection seals and locks are properly installed and undamaged to prevent fluids and foreign bodies from penetrating the product.

• Only use the following power supply for the components:
  – 24 V DC PELV circuits in accordance with DIN EN 60204-1/IEC 60204-1.
  – The PELV power source must be a safety isolation transformer in accordance with IEC 61558-1 or IEC 61558-2-6, or a power source offering the same degree of safety as a safety isolation transformer.
  – Make sure that the power supply of the power pack is always less than 300 V AC (outer conductor – neutral wire).

• In case of heavily contaminated vacuum/ambient air, use a VFC cup version vacuum filter between the vacuum connection and the volumes to be evacuated.

During commissioning

• Check that all the electrical and pneumatic connections are allocated or closed. Only commission fully installed products.

• When the supply voltage is switched on, output signals may change (discrete signals as well as IO-Link signals). Depending on the machine’s/system’s functionality, this may lead to severe personal injury or damage to equipment.
  During operation

• Do not use the ejector in areas that are not splashwater-proof.

• Closed containers may explode due to compressed air. Closed containers may implode due to vacuum.

• Only operate the ejector with a silencer. Never look into the exhaust air stream of the silencer.

• The ejector emits acoustic noise. We recommend wearing ear protectors.

• Do not draw in any hazardous dust, oil mist, vapor, aerosol, or similar as they willreach the exhaust air and may result in poisoning.

• Operating the product beyond the specified performance limits is not permitted.Malfunctions and destruction may result.

• No persons are allowed in the transporting area of the suctioned useful load.

• With the machine/system in automatic mode, no persons are allowed in the danger zone.

• The trained personnel must also be familiar with the control concept of the system. In this context, particular attention must be paid to redundant control parts and feedback signals of the system.

• Do not operate the ejector with a closed vacuum connection.
  During cleaning

• Never use solvents or aggressive detergents. Only clean the product using a damp cloth. Only use water and, if necessary, a mild detergent.

• Do not use high-pressure cleaners for cleaning.

During service and repairs

• Make sure that no line connections, ports and components are disconnected as long as pressure and voltage are applied in the system. Protect the system against being restarted.

Scope of Delivery

The scope of delivery include:

• 1 compact ejector ECD-LV
• Operating instructions
• Use the name plate on the product and the description in chapter 4 to verify which variant you are dealing with and whether it corresponds to your order.

About This Product

Product overview 1
Fig.1 shows compact ejector ECD-LV.
Function Description
Vacuum generation (suctioning of workpiece)
The ejector is designed for handling parts using a vacuum in conjunction with suctioning systems.
The ejector is actuated with electrical signals via the M12 plug. The “suction” signalinput activates and deactivates the Venturi nozzle. In the NO version, an applied “suction” signal input deactivates the Venturi nozzle, while in the NC version it activates the nozzle.
An integrated sensor detects the vacuum generated by the Venturi nozzle. This is evaluated via an electronic circuit and is used as the basis for indicating system states. The ejector is available with an air economizer function (ejector variant RD) and without an air economizer function (ejector variant VD).
With the variant RD with air economizer function the ejector automatically regulatesthe vacuum in the “suction” operating state. The electronics switch off the Venturi nozzle when the switching point H1 set by the user is reached.
With small volumes to be evacuated, there may be situations where the vacuum is switched off far beyond the set switching point H1. This behavior does not constitute an error. On suctioned objects with leak-tight surfaces, the integrated non-return valve prevents the vacuum from dropping. If the system vacuum drops below switching point H1-h1 due to leakage, the Venturi nozzle switches on again.
The supply voltage is monitored by the electronics. If the supply voltage falls below around 21 V, the air economizer function is disabled. The signal inputs “suction” and “blow-off” are also no longer processed.
The “suction” valve is additionally equipped with manual override. With the manual override the valve can be operated without supply voltage.
Blow-off (placing down the workpiece)
In “blow-off” operating state, the vacuum circuit of the ejector is pressurized with compressed air. This mode is used to ensure fast vacuum reduction and thus quick placing of the workpiece. The “blow-off” operating state can be actuated either externally or internally.
With externally controlled blowing-off, the “blow-off” operating state is activated via the “blow-off” signal input.
With internally controlled automatic blow-off, the “blow-off” valve is automatically actuated for a set time after leaving the “suction” operating state.
The “blow-off” valve is additionally equipped with manual override. With the manual override the valve can be operated without supply voltage.
With externally controlled automatic blow-off, the “blow-off” valve is automatically actuated for a set time after activation of the “blow-off” signal input.
** The ejector additionally features the “Manual operation” mode. In this operating mode, suction and blow-off can be actuated via the keys on the ejector. Refer to the section “Manual operation” for further information.
Operating modes
All ejectors in the ECD-LV series can be operated in two operating modes. The operator can choose between the direct connection to inputs and outputs (standard I/O = SIO) or a connection via the communication line (IO-Link). In the basic operating state, the ejector always works in SIO mode (standard I/O mode) but can be transferred to the IO-Link operating mode at any time via an IO-Link master, and vice versa.
For further information about IO-Link mode (R412026283) and an electronic device description (IO Device Description, IODD), please visit our Media Center at www.aventics.com/media-centre/
Use the search bar to search for: IO-Link (ECD-LV) or IODD SIO operating mode When operating the ejector in SIO mode, all input and output signals are connected
to a controller (PLC) either directly or via intelligent connection boxes.
In addition to supply voltage, this requires two input and one output signals to be connected, which the controller uses to actuate the ejector.
This way, the ejector’s basic functions such as “suctioning” and “blowing off” as well as feedback can be used. In detail, this means:
Ejector inputs**

• Suctioning ON/OFF
• Blowing off ON/OFF

Ejector output

• Feedback H2

Alternatively, you can waive use of the “blow-off” signal if the ejector is operated in the “internally time-controlled” blow-off mode. This allows for operation on a single
port in a configurable connection box (application 1 x DO and 1 x DI).
The display and operating elements are used to adjust all settings and read out the internal counter.
IO-Link operating mode
The ejector can be operated in IO-Link mode for intelligent communication with a controller.
IO-Link mode enables the ejector to be configured remotely and also allows for energy and process control (EPC).
Energy and process control (EPC) covers:

• Condition Monitoring (CM): Monitors the device status to increase plant availability
• Energy Monitoring (EM): Monitors energy to improve the vacuum system’s energy consumption
• Predictive Maintenance (PM): Allows for predictive maintenance to improve the performance and quality of gripper systems

For further information about IO-Link mode (R412026283) and an electronic device description (IO Device Description, IODD), please visit our Media Center at www.aventics.com/media-centre/
Use the search bar to search for: IO-Link (ECD-LV) or IODD
Product description
PNP or NPN ejector variant
The switching behavior of the ejector’s electrical inputs and its output can be adjusted and therefore is not dependent on the variant.
The ejectors are set to PNP as their factory settings.
Every ejector has an exact article designation (e.g. ECD-LV-EC-20-NO-RD).
The ejectors are distinguished into NO (normally open) and NC (normally closed) based on their basic position when no voltage is applied.
The breakdown for the article designation is as follows:

Type
Operating mode:
electrical
Performance class
Home position
System monitoring| ECD-LV
---|---
EC
20; 25
NO (normally open) suction without current
VD (digital vacuum switch, on request)
NC (normally closed) no suction without current
RD (digital vacuum switch and integrated air economizer function)

• Refer to the name plate of your version for further details.

Display and Operating Elements

Vacuum/pressure indicator
The display either shows the current system vacuum or the menu. The 2 LEDs H1 and H2 indicate in which range the vacuum level currently is with respect to the sethres hold values.
The ejector features 4 buttons, a three-digit display, four LEDs, and a status display for the system vacuum.

| Item| Description
---|---|---
1| LED valve “blow-off”
2| Status display for system vacuum
3| LED “H1” (air economizer function)and LED “H2” (signal output “parts control”)
4| Display (3-digit 7-segment display)
5| Down button
6| Up button
7| ENTER button
8| Menu button
9| LED valve “suction”

For an explanation of the symbols of the display see table 7
Process state LEDs
Process states “suction” and “blow-off” each have an LED assigned.

NC: ejector is suctioning or being regulated
LED “blow-off” is constantly lit| Ejector is blowing off

LEDs threshold values H1 and H2
The LEDs for threshold values H1 and H2 indicate the current system vacuum level.

Vacuum < H2
Vacuum decreasing:
Vacuum < (H2-h2)
LED H2 is constantly lit| Vacuum increasing:
Vacuum > H2 and < H1
Vacuum decreasing:
Vacuum > (H2-h2) and < (H1-h1)
Both LEDs are constantly lit| Vacuum increasing:
Vacuum > H1
Vacuum decreasing:
Vacuum > (H1-h1)

Status display for system vacuum
The ejector features a status display for the system vacuum. and for monitoring functions.
The system status is indicated by the colors RED or GREEN.
The status display is refreshed for each suction cycle that was activated (NC) or deactivated (NO) via the “suction” signal input.
In regular suction cycles, the status display indicates the height of the current system vacuum in relation to the switching point H1. The status display goes out at the end of a regular suction cycle.
Vacuum monitoring

Vacuum decreasing: vacuum ≤ H1-h1
R = RED| Vacuum < H1

Monitoring functions
If the switching point H1 is never reached within a suction cycle, the status display remains RED at the end of the suction cycle.
The ejector variant with air economizer function (RD) features a valve protection function. If the air economizer function is activated [ctr=on] and high leakage in the gripping system, the ejector very frequently switches between the status “Venturi valve active” and “Venturi valve inactive”. This vastly increases the number of switching procedures of the valves within a very short period of time. To protect the ejector and increase the service life, the ejector automatically switches off the air economizer function with a switching frequency of >6/3 s and activates permanent suction, i.e. the ejector remains in the “Venturi valve active” status. The status display remains RED until the next regular suction cycle.

R = RED| H1 is never exceeded in the suction cycle| Vacuum < H1
Suction valves switches

6/3 s (ejector variant RD)| Ejector activates permanent suction, i.e. remains in the status “Venturi valve active” (valve protection function)

Assembly 2

Assembling the ejector 1
The ejector can be mounted with screws, see Fig.1 . See figure for dimensions2.
When mounting the fastening screws, we recommend using washers.
Connecting the ejector pneumatics 3
CAUTION
System is under pressure during operation
Working on the system under pressure can lead to injuries and damage to property.

• Depressurize all relevant system parts prior to performing work on the system.

NOTICE
Equipment damage due to underpressure
Operating the ejector with a closed vacuum connection can lead to underpressure.
This can damage the ejector.

• Make sure that the vacuum connection is not closed.
• Use only compressed air from an appropriately maintained system (air or neutral gas in accordance with EN 983, filtered to 5 μm, oiled or oil-free).
• Dirt particles or foreign bodies in the ejector connection or tubing or pipelines may impair the ejector’s function or lead to a malfunction.
• Route tubing and pipelines as short as possible.
• If the inside diameters selected for the compressed air end are too small, the supply of compressed air will be insufficient. As a result, the ejector will not achieve its specified performance.
• If the inside diameter selected for the vacuum end is too small, this will cause an excessively high flow resistance. This will in turn decrease the suction capacity and increase the suction time. Blow-off times will also increase.
• Use only the tubing or pipe inside diameters that are recommended for the ejector. If this is not possible, use the next higher diameter.

Recommended inside diameters

ECD-LV-EC-…
Performance class| Inside diameter [mm]1
---|---
Compressed air end| Vacuum end
20| 6| 8
25| 8| 9

1. Based on a maximum tubing length of 2 m. In the case of longer tubing lengths, select larger cross sections as appropriate.
   Make the pneumatic connection for the ejector as follows, see Fig. 1:

1. Make sure the relevant system part is not under pressure.
2. Lay the tubes so as not to bend or crush them.
3. Connect the compressed air tubing with the compressed air connection (8) and the vacuum tubing with the vacuum connection (4).

Electrically connecting the ejector
CAUTION
System is under voltage during operation
Working on the system under voltage can lead to injuries due to electric shock or damage to the components.

• Make sure that all relevant system parts are not under voltage before performing work on the system.
• Connect or disconnect plug connectors only if all relevant system parts are without voltage.
• Electrical connection is made via a 5-pin M12 plug that supplies the ejector with power and includes the two input signals and the output signal. Inputs and outputs are not galvanically isolated.
• Use protective extra low voltage (PELV) only and provide for secure electrical isolation of the operating voltage in accordance with EN 60204.
• The maximum line length for the supply voltage and the signal inputs and outputs is 30 m.

Pin assignment of the connection plugs, SIO mode
M12 plug, 5-pin

| 1| USA| Supply voltage
2| IN1| “Suction”1) signal input
3| Gnd SA| Ground
4| Out| “Parts control” signal output (H2)
5| 5IN2| “Blow-off”2) signal input

1. NO version: suction OFF, NC version: suction ON
2. NO/NC version: blow-off ON/OFF

Make the electrical connections for the ejector as follows, see Fig . 1:

1. Make sure the relevant system part is not under voltage.
2. Lay the cables so as not to bend or crush them.
3. Connect the power supply to the ejector’s electrical connection (5).

External blow-off| Automatic blow-off
For directly connecting the ejector to the controller (PLC), use AVENTICS connecting cables, for example.| For connecting the ejector to I/O boxes, use AVENTICS connecting cables, for example. W Connecting cable, 5 m, material number: 8946054702*

W Connecting cable, 5 m, material number: R412026780*

• See chapter 10 “Accessories”
  Planning, SIO mode
  All process signals have to be wired in parallel for operating the ejector in SIO mode.
  Consequently, three lines are required per ejector for the process signals.
  Process data INPUT (PLC)

Process data OUTPUT (PLC)

Commissioning and Operation

WARNING
Severe personal injury or property damage due to moving machine/system parts
When the supply voltage is switched on, the signal output may change. Depending on the machine’s functionality, the machine/system may be put into motion.
Make sure that no persons are in the transporting area when you switch on the machine/system.
CAUTION
Personal injury or property damage caused by non-compliance with specific technical rules
Operating the ejector system without power packs and without complying with standard EN 60204 can result in personal injuries and damage to the system and the connected components.

• Only operate the system using power packs with protective extra-low voltage (PELV) and safe electric isolation of the supply voltage in accordance with EN 60204.
• Do not connect or disconnect plug connectors under voltage.

Operating states 4 5

Automatic
When the ejector is connected to the supply voltage, the ejector is ready for operation and is in automatic mode. This is the normal operating state, in which the ejector is operated via the system controller (PLC).
Ejector parameterization is always performed in automatic mode.
Manual
The buttons on the ejector can be used to switch the operating state from automatic
operation to “Manual operation”.
General functions
In SIO mode, the following functions can be adjusted directly on the ejector.
WARNING
Open vacuum/exhaust air connections and vacuum cup
Risk of injury by suctioning of eyes or other parts of the body.
Risk of injury due to exhaust air and any other parts and debris that may have been drawn in being emitted from the exhaust air connection at high speed.

• Never look into vacuum openings, neither suctioning or not suctioning (e.g. vacuum connections or connected vacuum cups).
• Never look into or enter the exhaust air stream.

Manual operation
WARNING
Personal injury or property damage due to moving machine/system parts
When setting up in manual operation mode, output signals may change and external signals (coming from the PLC via the M12 plug) may end manual operation, which will cause the machine/system to be put into motion.

• Make sure that the machine/system is not put into motion and no persons are in the transporting area when you are setting up manual operation.
• Make sure that there are no control commands coming from the PLC during manual operation, and putting the ejector into automatic mode as a result.

Dropping useful load due to lack of vacuum!
Starting manual operation always results in the “pneumatics OFF” operating state, i.e. active suctioning is interrupted by manual operation. Useful load may therefore drop.

•  Make sure that no persons are located under the useful load in the transporting area.

In manual operation, the “suction” and “blow-off” ejector functions can be controlled using the control panel buttons.
The two LEDs “H1” and “H2” flash in this operating mode.
Because the valve protection function is deactivated in manual operation, this function can also be used to locate and repair leaks in the vacuum circuit.
Activating “Manual operation”
**To activate “Manual operation” mode, simultaneously press and hold the button  buttons for >3 s.
The “Manual operation” operating mode is also available without actuator voltage (emergency OFF, set-up operation in the IO-Link mode).
The current process status is retained when manual operation is first actuated.
Manual suctioning**

• To activate the “suction” operating state in “Manual operation” mode, press the   button.
• To exit the “suction” operating state again, press the button or the button once again.

WARNING
Danger of injury due to moving objects
Automatic exiting of manual operation by changes to external signals
can put a handling object in motion by suctioning or blowing off.

• Make sure that no objects will be moved and no persons are in the transporting area when you are exiting manual mode.
• Press the **Menu** button to exit the “Manual operation” mode.

The “Manual operation” mode is also exited by changing the status of the external signal inputs.
Monitoring the system vacuum
Each ejector features an integrated sensor for monitoring the current system vacuum. The vacuum level provides information about the process and influences the following signals and parameters:

• Threshold value LED H1
• Threshold value LED H2
• Signal output H2
• Vacuum analog value
• Process data bits H1
• Process data bits H2

The threshold values and associated hysteresis values can be adjusted under the menu options [H-1], [h-1], [H-2] and [h-2] in the home menu.
Zero-point adjustment for the Sensor (calibration)
We recommend calibrating the sensor after installing the ejector.
To adjust the zero-point of the vacuum sensor, the system’s vacuum circuit must be exhausted into the atmosphere.
The zero-point can only be adjusted in the range of ±3% from the measuring range’s final value.
** The error code [E03] appears in the display if the permitted limit of ±3% is exceeded.
The function for adjusting the zero-point of the sensor is executed using the [CAL] menu items in the home menu.
Control function (applies only to variant RD with integrated air economizer function)
This ejector function provides the opportunity to save compressed air. When the set switching threshold H1 is reached, vacuum generation is interrupted. If the vacuum drops below the hysteresis threshold H1-h1 due to leakage, vacuum generation is resumed.
The following operating modes for the control function can be adjusted using the [ctr] menu item in the configuration menu:
No control (permanent suction)**

• Ejector suctions constantly with maximum output
• Recommended for very porous work pieces where the high leakage rate would result in vacuum generation switching constantly off and back on again
• Setting for permanent suction: [ctr = oFF]

** This setting ([ctr = oFF]) is only available when control deactivation is disabled [dCS = oFF].
Control**

• Ejector switches off vacuum generation when the threshold H1 is reached and switches it back on again when the system falls below H1-h1 threshold.
• This setting is particularly recommended for suction-proof work pieces.
• Setting for control: [ctr = on]

Control with leak monitoring

• This operating mode is the same as the mode above but also measures the system’s leak rate and compares it to an adjustable limit [-L-]. If the actual leak rate exceeds the limit more than twice in succession, control is deactivated and the system switches to permanent suction.
• Setting for control with leak monitoring: [ctr = onS]

** Activating the function [onS] activates [-L-] in the configuration menu.
Disabling control deactivation
(applies only to variant RD with integrated air economizer function)
WARNING**
Personal injury or property damage caused by moving objects
Disabling control deactivation [dCS = on] can lead to the suction valve being controlled at a very high rate. This results in a risk of the ejector being destroyed!

• Make sure that no persons are in the transporting area when using control deactivation.
• Do not disable control deactivation when switching frequently.

The automatic control deactivation can be disabled by the valve protection function.
The automatic control deactivation can be disabled and enabled using the [dCS] menu item in the configuration menu.

• [dCS = NO]: The ejector switches to the “Permanent suction” operating state if the leak rate is too high and the valve switches too frequently.
• [dCS = YES]: Permanent suction is deactivated; the ejector continues regulating despite the high leak rate or a control frequency of >6/3 s.

The setting [dCS = YES] is only available if the control function [ctr = on] is selected.
In the event of undervoltage or a loss of voltage, the ejector variant NO responds despite permanent suction being deactivated via [dCS = YES] with permanent suction.
Blow-off modes
The menu item [bLo] in the configuration menu can be used to adjust two different blow-off modes:
Externally controlled blowing off

• The “blow-off” valve is directly actuated via the “blow-off” signal input. The ejector will blow-off as long as the signal is present.
• Blow-off setting for externally controlled blow-off: [-E-]

Internally time-controlled blowing off

• The “blow-off” valve is automatically actuated for the set time [tbL ] (basic menu)when exiting the “suction” operating state.
• This function saves an output on the controller.
• Blow-off setting for internally time-controlled blow-off: [I-t]

Signal output
The ejector features a signal output, which can be configured using the corresponding menu item.
Output function
The signal output can be switched between the normally open contact [no] (normallyopen) or the normally closed contact [nc] (normally closed).
The menu item [o-2] in the configuration menu is used to switch the output.
The function for the switching threshold H2-h2 (parts control) is assigned to the signal output OUT 2.
Output type
The output type can be used to switch between PNP and NPN.
Furthermore, this function is also used to configure the signal inputs at the same time.
The menu item [tYP] in the configuration menu is used to switch the output.
Selecting the vacuum unit
The menu item [uni] i n the configuration menu can be used to select the unit for the vacuum value displayed:
Bar
Vacuum values displayed in the unit mbar: [-bA]
Pascal
Vacuum values displayed in the unit kPA: [-PA]
inchHg
Vacuum values displayed in the unit inHG: [-iH] Write protection
A PIN code can be used to prevent the parameters from being changed in the user menu. The display of the current settings is still guaranteed. Upon delivery of the device, the PIN code is 000. This means that access to the parameters is not locked. To activate write protection, you must enter a valid PIN code between 001 and 999.
To permanently enable the display, you must set the PIN code to 000 again.

• Enter the PIN code into the configuration menu (menu item [PIN]).

** As the state of signal inputs and outputs can change as a result of configuration during active operation, we recommend using a PIN code.
Resetting to factory settings**
With this function the ejector is returned to the settings on delivery.
The counter statuses are not affected by this function.

• Run the function using the configuration menu (menu item [rES]).

The factory settings for the ejector are listed at the end of these instructions(table 8)
Resetting the device to its factory settings changes the switching points and the configuration of the signal output. This may change the state of the ejector system.
Counter
The ejector is equipped with two internal counters [cc1] and [cc2].

The counters can be checked on the system menu.
Calculating the difference between counter 2 and counter 1 can provide information regarding the average switching frequency of the air economizer.
Voltage monitoring
All ejector types are equipped with internal voltage monitoring. If the supply voltage drops below the permitted threshold, the ejector switches to fault status E07. This is shown on the display; menu operation and response to signal inputs is prohibited.
The parts control output functions as normal. The button can still be used to display the current supply voltage.
In terms of the pneumatics, the ejector’s state changes as follows:
Ejector type NO
Ejector switches to the “Suction” operating state
Ejector type NC
Ejector switches to the “Pneumatics OFF” operating state
**In the event of undervoltage and active suction, control is no longer active.
Furthermore, the system detects when the supply voltage is too high and generates a corresponding error message.
Setting the blow-off volume flow**

Below the vacuum connection there is a flow control screw for setting the blow-off volume flow.

• Turn the flow control screw clockwise (to the right) in order to reduce the volume flow.
• Turn the flow control screw counterclockwise (to the left) in order to increase the volume flow.

The flow control screw has a stop on both sides.
Do not turn the flow control screw beyond its stops! Due to technical reasons, a minimum volume flow of approx. 20% is always required.
The blow-off volume flow can be set to a value between 20% and 100%.

Commissioning

The ejector may only be commissioned after it has been installed in the machine/system for which it is intended.
First-time commissioning

1. Make sure that all electrical and pneumatic connections of the ejector are correctly connected and are firmly fitted.
2. Enter the required menu settings (basic settings, configuration menu, system menu, and user menu).
3. Switch on the operating voltage.
4. Switch on the operating pressure.

Recommissioning after a downtime

1. Make sure that all electrical and pneumatic connections of the ejector are correctly connected and are firmly fitted.
2. Switch on the operating voltage.
3. Switch on the operating pressure.

A typical handling cycle is divided into the three steps of suctioning, blowing off and idle state. In order to check whether sufficient vacuum has been built up, output 2 is monitored during suctioning.

Adjusting the software menus
The menu is operated using four buttons. Settings are adjusted using the software menu. The operating structure is split into settings for the home menu and settings for the configuration menu. For standard applications, adjusting the ejector’s settings in the home menu will suffice. An advanced configuration menu is available for applications with special requirements.
** When settings are changed, undefined states may occur in the system for short periods of time (for around 50 ms) under certain circumstances.
Vacuum display
Outside of the menus, the ejector is in display mode and displays the current vacuum.
If there is overpressure in the vacuum circuit, the display “-FF” appears. This normally occurs in the “Blow-off” operating state.
If the vacuum value is too high (outside of the measurement range), the display “FFF” appears.
Home menu**
The home menu can be used to adjust and check all of the settings for the ejector’s standard applications.

Adjusting parameters in the home menu
**** If the buttons or are pressed for around 3 s, the system starts scrolling quickly through the numbers to be changed.

1. To adjust the parameters in the home menu, briefly press button .
2. To select the parameter you wish to change, press the button or .
3. To confirm the parameter, press the button .
4. To change the parameter, press the button or .
5. To save the selected parameter, press the button .

Adjusting the zero point (calibration)

1. To adjust the zero point of the built-in sensors, briefly press the button .
2.  Press the button or until [CAL] appears in the display.
3. Press the button to confirm the value.

The vacuum sensor is now calibrated.
Configuration menu
An advanced configuration menu is available for applications with special requirements. The operating structure appears as follows: See fig. 6/1 and 6/2

Adjusting the configuration menu
If the buttons or are pressed for around 3 s, the system starts scrolling quickly through the numbers to be changed.
To leave the configuration menu, press button

1. To adjust the parameters in the configuration menu, press the button >3 s.
2. To select the parameter you wish to change, press the button or .
3. To confirm the parameter, press the button .
4. To change the parameter, press the button or .
5. To save the selected parameter, press the button .

Entering the PIN code

1. To enter the PIN code, press the button >3 s.
2. Press the button or to select the [Pin] menu item.
3. To confirm the menu item, press the button .
4. Use the buttons or to enter the first number in the PIN code.
5. To confirm the entry, press the button .
6. Use the buttons or to enter the other numbers in the PIN code.
7. To save the PIN code, press the button >3 s. [Loc] flashes in the display and the configuration menu disappears.

Running the “Reset to factory settings” function

1. To run the “Reset to factory settings” function, press the button >3 s.
2. To select the menu item [rES], press the button or .
3. To reset the ejector to factory settings press the button >3 s.

After confirmation, the display flashes for three seconds and then automatically returns to display mode.
**** The zero-point adjustment is also reset. The zero point may have to BE reconfigured [CAL].

WARNING
Severe personal injury or property damage due to moving machine/ system parts
Resetting the device to its factory settings changes the switching points and the configuration of the signal output. The changed signal at the signal output can set the machine/system in motion.

• Make sure that the machine/system is not put into motion and no persons are in the transporting area during “reset to factory settings”.

System menu
A special menu is available for checking system data, such as the counters, software version, item numbers and serial numbers. The operating structure is as follows:

Displaying data in the system menu

1. To display data in the system menu, simultaneously press and hold the buttons or >3 s.
2. To select the value you wish to display, press the button or .
3. Press the button to confirm the value. The value is displayed
4. To leave the system menu, press the button .

Displaying the counters
This menu item displays the counters [ct1] (suction cycles) and [ct2] (number of valve switches).
The last three decimal places for the total counter value are displayed. The decimal point furthest to the right flashes. This corresponds to the block of three numbers with the lowest value.
You can use the buttons or to display the other decimal places in the total counter value. The decimal points indicate which block of three numbers from the total counter value is shown in the display.
The total value of the counter is made up of 3 blocks of numbers:

In this example, the total counter value is 48 618 593.
Displaying the software version
The software version provides information regarding the current software on the internal controller.
**** To leave the system menu, press the button .

Service and Repairs

External contamination
NOTICE
Damage and disruptions due to penetrating fluids or contact with aggressive media
Penetrating fluids and use of solvents and aggressive cleaning agents can lead to damage and disruptions.
In this case, reliable ejector function can no longer be guaranteed.

• Only clean the ejector with a damp, lint-free cloth.
• Only use water and, if necessary, a mild detergent for cleaning.
• Make sure that the silencer and the controller are not soaked in fluid.
• Do not use a high-pressure cleaner.

Silencer
NOTICE
Damage due to excessive force
Exerting excessive force when tightening the mounting screws can lead to damage to the housing.
Observe the maximum torque of 0.5 Nm when tightening the mounting screws on the silencer module.
** We recommend that you also replace the damping plate when exchanging the silencer insert.
The open silencer can become soiled if exposed to very heavy contamination by dust, oil, etc. and thus reduce the suction capacity. It should be replaced in this case. Due to the capillary effect of the porous material, cleaning is not recommended.
Press-fit screens
NOTICE
Damage to ejector system due to missing press-fit screen**
Fluids and foreign objects could penetrate and destroy the ejector.

• Do not operate the ejector system without press-fit screens.

Press-fit screens are installed in the vacuum and compressed air connections.
Over time, dust, chips and other solid matter can deposit in these screens.
If the ejector system performance noticeably drops, the screens can easily be replaced.

Spare and wearing parts

Designation……. Mat. no.
Pilot valve blow off, ejector variant ECD-LV-…-NO/NC
pilot valve suction, ejector variant ECD-LV-…-NC…… R412026287
Pilot valve suction, ejector variant ECD-LV-…-NO ,……. R412026288
Further wear and replacement parts can be found in our online catalog at www.aventics.com/pneumatics-catalog

Troubleshooting

Error
The ejector’s error messages are shown on the display.

value)
| Manual operation not possible during the “blow-off” operating state
| Actuator/sensor supply voltage too low
| Short circuit in OUT signal output
| Vacuum created exceeds the measurement range
| Overpressure in the vacuum circuit

**** The error [E01] remains visible after one-time display. Delete the error by disconnecting the supply voltage.
If this error recurs after switching the supply voltage back on, the dive mustbe replaced.

Replace silencer
Leakage in tubing line| Check tubing connections
Leakage on vacuum cup| Check vacuum cup
Operating pressure too low| Increase the operating pressure (observe max. limits)
Inside diameter of tubing line too small| See recommendations for tubing diameter
Unable to hold useful load| Vacuum level too low| Increase control range
Vacuum cup too small| Select larger vacuum cup
The display features an error code| See error code table| –

Accessories

Connecting cable, 5 m
Socket, M12x1, 5-pin
Open cable ends, 5-wire| R412026780
Connecting cable, 5 m
Plug, M12x1, 5-pin
Socket, M12x1, 5-pin| 8946054702
Y-connector
2x socket, M12x1, 5-pin
Plug, M12x1, 5-pin| R412026785
Compressed air subbase, max. 4 ejectors| R412026151
Retaining bracket set| R412026152
Cap nuts for vacant ports| R412026153

Further accessories can be found in our online catalog at www.aventics.com /pneumatics-catalog

Disposal

Dispose of the ejector in accordance with the national regulations in your country.

Technical Data

Electrical parameters

1. The supply voltage must comply with the regulations in accordance with EN 60204
   (Protective extra-low voltage). The supply voltage, the signal inputs and the signal output are protected against polarity reversal.
2. The signal output is resistant against short circuits. However, the signal output is not secured against overload.
   Permanent >0.15 A load currents can result in impermissible heating and therefore destruction of the ejector!
   Display parameters

display (see “Electrical parameters” for signal inputs and outputs).
Rest period until the menu is closed| 2| min.| If no settings are performed in a menu, the system automatically switches back to display mode.

Mechanical data

Parameter| Symbol| Limit  min.| Limit typ.| Limit max.| Unit| Comment
---|---|---|---|---|---|---
Working temperature| T amb| 0| | 50| °C|
Humidity| H ret| 10| | 90| % rH| non-condensing
Protection class| | | | IP65| |
Operating pressure| P| 4| 5| 7| bar|
Operating medium| Neutral gases in accordance with EN 983, e.g., air, nitrogen, and inert gases (e.g., argon, helium, neon),
filtered to 5 μm, oiled or oil-free, compressed air quality class 3-3-3 as per ISO 8573-1

Mechanical parameters

1. At 4.5 bar
2. In the suctioned state

Mate

POM
Control housing| PA
Silencer cover| PA
Silencer insert| PE
Seals| NBR
Lubrication| Silicone-free

**** Figures: View varies according to the series.

1. Valve “blow-off”: All ejector variants NC function (with NO pilot valve)
2. Valve “suction”: Ejector variant NO: NC pilot valve Ejector variant NC: NO pilot valve
3. Manual override valve “suction” only available for ejector variants NO and NC.

Ejector variant NO control

Ejector variant NC control

output NO configuration)
| Hysteresis h2| Hysteresis of “parts control” signal output
| Blow-off time| Blow-off setting for time-controlled blow-off
| Zero-point adjustment (calibrate)| Setting the zero point – calibration
| Counter 1| Counter for suction cycles (“Suction” signal input)
| Counter 2| Counter for valve switching frequency
| Software version| Displays the current software version
| Mat. no.| Displays the ejector’s material number
| Internal index| Vacuum unit in which the measured value and settings values are displayed
| Vacuum unit| The vacuum values are displayed in the unit mbar
| Vacuum value in mbar| The vacuum values are displayed in the unit kPa
| Vacuum value in kPa| The vacuum values are displayed in the unit inchHg
| Vacuum value in inHg| Menu for configuring the signal type (NPN/PNP)
| Configuration signal type| All input and output signals are PNP-switching (Input/output on = 24 V)
| Signal type PNP| All input and output signals are NPN-switching (Input/output on = 0 V)
| Signal NPN| Menu for configuring the signal input
| Configuration signal output| Setting the signal output to normally open
| Normally closed contact (normally closed)| Setting the signal output to normally closed
| Air economizer function (control)| Setting for the air economizer function
| Air economizer function on| Switching on the air economizer function
| Air economizer function off| Switching off the air economizer function
| Blow-off function| Menu for configuring the blow-off function
| “External” blow-off| Selection of externally controlled blow-off (external signal)
| “Internal” blow-off| Selection of internally controlled blow-off (triggered internally, adjustable time)
| Display| Selection of the display menu for rotating the display
| Display on top| Alignment of the display without rotation (standard)
| Display bottom| Alignment of the display rotated by 180°
| PIN code| Enter the PIN code to release the lock
| “Clear all” (reset)| All adjustable values are reset to the factory settings
| Menu locked| After entering a wrong pin code, the keyboard and menus remain locked
| Menu unlocked (unlock)| The buttons and menus are unlocked
Symbol| Function| Factory setting
| Switching point H1| 750 mbar
| Hysteresis h1| 150 mbar
| Switching point H2| 550 mbar
| Hysteresis h2| 10 mbar
| Blow-off time| 0,20 s
| Vacuum unit| Vacuum unit in mbar
| Configuration of signal type| PNP-switching
| Configuration of output| Normally open contact (normally open)
| Air economizer function (control)| Ejector with air economizer function:
Ejector without air economizer function:
| Blow-off function| Externally controlled blow-off
| Display| Alignment of the not rotated display
| PIN code|

The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The given information does not release the user from the obligation of own judgement and verification. It must be remembered that our products are subject to a natural process of wear and aging. An example configuration is depicted on the title page. The delivered product may thus vary from that in the illustration.
Translation of the original operating instructions. The original operating instructions were created in the German language.
R412025991–BAL–001–AC/2019-03
Subject to modifications. © All rights reserved by AVENTICS GmbH, even and especially in cases of proprietary rights applications. It may not be reproduced or given to third parties without its consent.

** AVENTICS GmbH**
Ulmer Straße 4
30880 Laatzen, GERMANY
Phone +49 (0) 511-21 36-0
Fax: +49 (0) 511-21 36-2 69
www.aventics.com
[email protected]

References

• AVENTICS – Smart, reliable solutions for pneumatic automation | Emerson DE

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