Schmalz SCPS-L Series User manual

Compact Ejector SCPS-L
Operating Instructions
WWW.SCHMALZ.COM EN-US · 30.30.01.02636 · 00 · 01/21

Note
The Operating instructions were originally written in German. Store in a safe place for future reference.
Subject to technical changes without notice. No responsibility is taken for printing or other types of er-
rors.
Published by
© J.SchmalzGmbH, 01/21
This document is protected by copyright. J.SchmalzGmbH retains the rights established thereby. Repro-
duction of the contents, in full or in part, is only permitted within the limits of the legal provisions of
copyright law. Any modifications to or abridgments of the document are prohibited without explicit writ-
ten agreement from J.SchmalzGmbH.
Contact
J. Schmalz GmbH
Johannes-Schmalz-Str. 1
72293 Glatten, Germany
T: [phone]
[email protected]
www.schmalz.com
Contact information for Schmalz companies and trade partners worldwide can be found at:
www.schmalz.com/salesnetwork
2 / 40 EN-US · 30.30.01.02636 · 00 · 01/21

Contents
EN-US · 30.30.01.02636 · 00 · 01/21 3 / 40
Contents
1 Important Information ...................................................................................................................................5
1.1 Note on Using this Document ............................................................................................................ 5
1.2 The technical documentation is part of the product ........................................................................ 5
1.3 Type Plate ............................................................................................................................................ 5
1.4 Warnings in This Document................................................................................................................ 5
1.5 Symbol.................................................................................................................................................. 6
2 Fundamental Safety Instructions...................................................................................................................7
2.1 Safety ................................................................................................................................................... 7
2.2 Intended Use........................................................................................................................................ 7
2.3 Non-Intended Use ............................................................................................................................... 8
2.4 Personnel Qualifications ..................................................................................................................... 8
2.5 Modifications to the Ejector ............................................................................................................... 8
3 Product Description ........................................................................................................................................9
3.1 Ejector Designation ............................................................................................................................. 9
3.2 Ejector Structure.................................................................................................................................. 9
3.3 Display and Operating Element in Detail ........................................................................................ 10
4 Technical Data ...............................................................................................................................................12
4.1 General Parameters........................................................................................................................... 12
4.2 Electrical Parameters ......................................................................................................................... 12
4.3 Factory Settings ................................................................................................................................. 13
4.4 Performance Data ............................................................................................................................. 13
4.5 Dimensions......................................................................................................................................... 13
4.6 Pneumatic Circuit Plans..................................................................................................................... 14
5 General Description of Functions ................................................................................................................15
5.1 Picking up the Workpiece (Vacuum Generation)............................................................................ 15
5.2 Depositing the Workpiece/Part (Blowing Off) ................................................................................ 15
5.3 Operating Modes .............................................................................................................................. 15
5.3.1 Operation and Settings .............................................................................................................15
5.3.2 Manual Operating Mode ..........................................................................................................16
5.4 Viewing and Setting Parameters...................................................................................................... 17
5.5 Locking the Keypad........................................................................................................................... 18
5.6 Vacuum Monitoring .......................................................................................................................... 18
5.7 Signal Output .................................................................................................................................... 18
5.8 Control Function................................................................................................................................ 18
5.9 Depositing the Workpiece/Part (Blowing Off) ................................................................................ 18
5.10 Supply Voltage Display ..................................................................................................................... 19
5.11 Signal Type......................................................................................................................................... 19
5.12 Control Concept for NO Ejectors ...................................................................................................... 19
5.13 Control Concept for NC Ejectors....................................................................................................... 19
5.14 Vacuum unit ...................................................................................................................................... 20
6 Transport and Storage..................................................................................................................................21
6.1 Checking the Delivery ....................................................................................................................... 21

Contents
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7 Installation.....................................................................................................................................................22
7.1 Installation Instructions..................................................................................................................... 22
7.2 Mounting ........................................................................................................................................... 22
7.3 Pneumatic Connection ...................................................................................................................... 23
7.3.1 Connecting the Compressed Air and Vacuum ......................................................................... 23
7.3.2 Instructions for the Pneumatic Connection ............................................................................. 24
7.4 Electrical connection ......................................................................................................................... 24
7.4.1 PIN Assignment.......................................................................................................................... 26
7.5 Process Data....................................................................................................................................... 26
7.6 Start of Operations............................................................................................................................ 26
8 Operation ......................................................................................................................................................28
8.1 Safety Instructions for Operation..................................................................................................... 28
8.2 General Preparations ........................................................................................................................ 29
9 Troubleshooting............................................................................................................................................30
9.1 Help with Faults................................................................................................................................. 30
10 Maintenance..................................................................................................................................................31
10.1 Safety ................................................................................................................................................. 31
10.2 Cleaning the Ejector.......................................................................................................................... 31
10.3 Removing the Ejector Module.......................................................................................................... 31
10.4 Replacing the Silencer....................................................................................................................... 32
10.5 Opening and Cleaning the Ejector Module..................................................................................... 32
10.6 Mounting the Ejector Module and Silencer .................................................................................... 32
10.7 Cleaning the Press-in Screen............................................................................................................. 32
11 Warranty........................................................................................................................................................33
12 Spare and Wearing Parts, Accessories.........................................................................................................34
12.1 Spare and wearing parts................................................................................................................... 34
12.2 Accessories ......................................................................................................................................... 34
13 Decommissioning and Recycling..................................................................................................................36
13.1 Disposing of the Ejector.................................................................................................................... 36
13.2 Materials Used ................................................................................................................................... 36
14 EC Conformity ...............................................................................................................................................37
15 Notes..............................................................................................................................................................38

Important Information
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1Important Information
1.1Note on Using this Document
J.SchmalzGmbH is generally referred to as Schmalz in these Operating instructions.
These Operating instructions contain important notes and information about the different operating
phases of the product:
• Transport, storage, start of operations and decommissioning
• Safe operation, required maintenance, rectification of any faults
The Operating instructions describe the product at the time of delivery by Schmalz.
1.2The technical documentation is part of the product
1. For problem-free and safe operation, follow the instructions in the documents.
2. Keep the technical documentation in close proximity to the product. The documentation must be ac-
cessible to personnel at all times.
3. Pass on the technical documentation to subsequent users.
ðFailure to follow the instructions in these Operating instructions may result in injuries!
ðSchmalz is not liable for damage or malfunctions that result from failure to heed these instructions.
If you still have questions after reading the technical documentation, contact Schmalz Service at:
www.schmalz.com/services
1.3Type Plate
The type plate (1) is permanently attached to the
ejector at the location shown and must always be
clearly legible.
The type plate contains the following informa-
tion:
• Pneumatic symbol
• QR code
• Part sales designation/type
• Part number
• Manufacturing date
• Serial number
• Permitted pressure range
• Operating voltage
1
1.4Warnings in This Document
Warnings warn against hazards that may occur when handling the product. This document contains three
levels of danger that you can recognize by the signal word.
Signal word Meaning
WARNING Indicates a medium-risk hazard that could result in death or serious injury if
not avoided.
CAUTION Indicates a low-risk hazard that could result in minor or moderate injury if not
avoided.
NOTE Indicates a danger that leads to property damage.

Important Information
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1.5Symbol
This symbol indicates useful and important information.
üThis symbol represents a prerequisite that must be met prior to an operational step.
4This symbol represents an action to be performed.
ðThis symbol represents the result of an action.
Actions that consist of more than one step are numbered:
1. First action to be performed.
2. Second action to be performed.

Fundamental Safety Instructions
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2Fundamental Safety Instructions
2.1Safety
The ejector emits noise due to its use of compressed air.
WARNING
Noise pollution due to the escape of compressed air
Hearing damage!
4Wear ear protectors.
4The ejector must only be operated with a silencer.
WARNING
Uncontrolled movements of system components or falling of objects caused by in-
correct activation and switching of the Ejector while persons are in the plant
(safety door opened and actuator circuit switched off)
Serious injury
4Ensure that the valves and ejectors are enabled via the actuator voltage by installing a
potential separation between the sensor and actuator voltage.
4Wear the required personal protective equipment (PPE) when working in the danger
zone.
CAUTION
Depending on the purity of the ambient air, the exhaust air can contain particles,
which escape from the exhaust air outlet at high speed.
Eye injuries
4Do not look into the exhaust air flow
4Wear eye protection
2.2Intended Use
The ejector is built in accordance with the latest standards of technology and is safe to operate upon de-
livery; however, hazards can still arise during use.
The ejector is designed to generate a vacuum for gripping and transporting objects when used in conjunc-
tion with suction cups. It is operated by a controller via discrete signals.
Neutral gases are approved as evacuation media. Neutral gases include air, nitrogen and inert gases (e.g.
argon, xenon and neon).
The product is intended for industrial use.
Intended use includes observing the technical data and the installation and operating instructions in this
manual.

Fundamental Safety Instructions
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2.3Non-Intended Use
WARNING
Extraction of hazardous media, liquids or bulk material
Personal injury or damage to property!
4Do not extract harmful media such as dust, oil mists, vapors, aerosols etc.
4Do not extract aggressive gases or media such as acids, acid fumes, bases, biocides, dis-
infectants or detergents.
4Do not extract liquids or bulk materials, e.g. granulates.
Schmalz accepts no liability for damages caused by non-intended usage of the ejector.
In particular, the following are considered non-intended use:
• Filling pressurized containers, driving cylinders, valves or other pressure-operated functional ele-
ments
• In potentially explosive atmospheres
• Use in medical applications
• Lifting people or animals
• Evacuation of objects that are in danger of imploding
• Ballistic applications
2.4Personnel Qualifications
Unqualified personnel cannot recognize dangers and are therefore exposed to higher risks!
1. Task only qualified personnel to perform the tasks described in these Operating instructions.
2. The product must be operated only by persons who have undergone appropriate training.
These Operating instructions are intended for fitters who are trained in handling the product and who
can operate and install it.
2.5Modifications to the Ejector
Schmalz assumes no liability for consequences of modifications over which it has no control:
1. The ejector must be operated only in its original condition as delivered.
2. Use only original spare parts from Schmalz.
3. The ejector must be operated only in perfect condition.

Product Description
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3Product Description
3.1Ejector Designation
The breakdown of the item designation (e.g. SCPSi-L HF 3-16 NC RD M12-5 PNP) is as follows:
Property Variants
Type of ejector SCPSi-L, version with display
SCPS-L, version with bar display
Shape HF for “High Flow”
HV for “High Vacuum”
Nozzle size 2-07 / 2-09 / 2-13 / 2-16 / 3-16 / 3-20
Controller NO for “normally open”
NC for “normally closed”
Control RD for “with control”
No specification for “without control”
Electrical connection M12-5 connector
Signal type for signal inputs and out-
puts
NPN
PNP
3.2Ejector Structure
2
3
4
5
1 6
78
1 1/2" vacuum connection 2 Mounting hole (2x)
3 Display and control element 4 M12 electrical connection
5 1/4" compressed air connection 6 Ejector nozzle (covered)
7 Silencer with thread and snap closure 8 Exhaust outlet

Product Description
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3.3Display and Operating Element in Detail
Simple ejector operation is ensured with 3 buttons, the bar display and 4 LEDs for status information. The
current system vacuum is always displayed in the 8-digit LED bar display.
8 1 2 3 4
567
1MENU BUTTON 2 LED bar display
3 H1 limit value LED 4 DOWN BUTTON
5UP BUTTON 6 H2 limit value LED
7 LED process state “suction” 8 LED process state “blow off”
Definition of the LED Indicators
The “suction” and “blow off” process states are each assigned with an LED.
Display Ejector state
LEDs are both off No suction from ejector
LED for the suction function is constantly lit Ejector is applying suction or in control mode
LED for the blow off function is constantly
lit
Ejector blowing off

Product Description
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Meaning of the Vacuum Limit Value LEDs
The LEDs for the vacuum limit values H1 and H2 indicate the current level of the system vacuum relative
to the configured limit values. The display is independent of the switching function and the assignment of
the output.
Display Ejector state
LEDs both off Rising vacuum:
Vacuum < H2
Falling vacuum:
Vacuum < (H2-h2)
H2 LED lit steadily Rising vacuum:
Vacuum > H2 and < H1
Falling vacuum:
Vacuum > (H2-h2) and < (H1-h1)
Both LEDs lit steadily Rising vacuum:
Vacuum > H1
Falling vacuum:
Vacuum > (H1-h1)
Additional Display Functions on the LED Bar Display
The current system vacuum is always displayed in the 8-digit LED bar display.
LED bar display Meaning
Max. LED lights up briefly Supply pressure present, otherwise no LED is active
10% LED flashes rapidly Vacuum < permitted range (for example, during
blow off)
Entire LED bar lights up Max. LED flashes rapidly Vacuum > permitted range
Max. LED flashes rapidly Voltage supply > permitted range

Technical Data
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4Technical Data
4.1General Parameters
Parameter Symbol Limit value Unit Comment
min. typ. max.
Working temperature Tamb 0 --- 50 °C ---
Storage temperature TSto -10 --- 60 °C ---
Humidity Hrel 10 --- 90 % r.h. Free from condensation
Precision of vacuum sen-
sor
± 3% FS (full scale)
Degree of protection --- --- --- IP65 --- ---
Operating pressure (flow
pressure)
P 2 4.2 6 bar ---
Operating medium Air or neutral gas, 5µm filtered, with or without oil, class 3-3-3 com-
pressed air quality in acc. with ISO 8573-1
4.2Electrical Parameters
Parameter Symbol Limit values Unit Comment
min. typ. max.
Supply voltage USA 22.8 24 26.4 V DC PELV1)
Power consumption from US/A
2) with NO variant
IS/A — 50 4) 120 mA US/A = 24.0V
Power consumption from US/A
2) with NC variant
IS/A — 40 4) 70 mA US/A = 24.0V
Voltage of signal output (PNP) UOH US/SA-2 — VS/SA VDC IOH < 140mA
Voltage of signal output
(NPN)
UOL 0 — 2 VDC IOL < 140mA
Power consumption of signal
output (PNP)
IOH — — 140 mA Short-circuit-proof 3)
Power consumption of signal
output (NPN)
IOL — — -140 mA Short-circuit-proof 3)
Voltage of signal input (PNP) UIH 15 — UA/SA VDC In reference to GndA/
SA
Voltage of signal input (NPN) UIL 0 — 9 VDC In reference to UA/SA
Current of signal input (PNP) IIH — 5 — mA —
Current of signal input (NPN) IIL — -5 — mA —
Reaction time of signal inputs tI— 3 — ms —
Reaction time of signal out-
puts
tO1 — 200 ms Adjustable
1) The power supply must correspond to the regulations in accordance with EN60204 (protected extra-low
voltage). The signal inputs and outputs are all protected against reverse polarity.
2) Plus the output currents
3) The signal output is protected against short circuits. However, the signal output is not protected
against overloading. Constant load currents > 0.15A may lead to impermissible heating and therefore the
destruction of the ejector.
4) Mean value

Technical Data
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4.3Factory Settings
Parameter Value of the factory setting
Limit value H1 750mbar
Hysteresis value h1 150mbar
Limit value H2 550mbar
Hysteresis value h2 10mbar
Control Activated
Continuous suction Deactivated
Blow off function Externally controlled blow off
Vacuum unit Vacuum unit in mbar
Signal output “Normally open” contact = no
4.4Performance Data
Type SCPS-L-
2-07 HV
SCPS-L-
2-09 HV
SCPS-L-
2-13 HF
SCPS-L-
2-16 HV
SCPS-L-
3-16 HV
SCPS-L-
3-20 HV
Nozzle size [mm] 0.7 0.9 1.3 1.6 2.0
Max. vacuum1 [%] 85 61 90
Suction rate1 [l/min] 37 70 145 129 227 323
Max. blow off capacity 1 [l/
min]
130
Air consumption 1 (suction)
(l/min]
22 45 71 98 102 172
Sound level1, unobstructed
suction [dBA]
74 77 76 77 80 81
Sound level1, suction [dBA] 62 63 72 77
Weight [kg] 0.5
1) at 4.5 bar
4.5Dimensions

Technical Data
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B B1 H H1 H3 Y1 Y2 X1 X2
17.6 37.5 95.75 109 56.5 35 28 40 28
G1 G2 G3 G4 L L3 L4 D d
1/4" inter-
nal thread
1/2" inter-
nal thread
M12x1 ex-
ternal
thread, 5-
pin
M4 inter-
nal thread
Max. 230 21 11.5 29 4.5
All specifications are in mm
4.6Pneumatic Circuit Plans
SCPS-L...NO... SCPS-L...NC...

General Description of Functions
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5General Description of Functions
5.1Picking up the Workpiece (Vacuum Generation)
The ejector is designed for vacuum handling of airtight parts in combination with suction systems. The
vacuum is generated in a nozzle according to the Venturi principle, using suction generated by the flow
of accelerated compressed air. Compressed air is channeled into the ejector and flows through the nozzle.
A vacuum is generated immediately downstream of the motive nozzle; this causes the air to be sucked
through the vacuum connection. The air and compressed air that have been removed by the suction exit
together via the silencer or exhaust air channel.
The venturi nozzle on the ejector is activated and deactivated using the suction command:
• In the NO (normally open) variant, the venturi nozzle is deactivated when the suction signal is re-
ceived.
• In the NC (normally closed) variant, the venturi nozzle is activated when the suction signal is re-
ceived.
An integrated sensor records the vacuum generated by the venturi nozzle. This is evaluated by an elec-
tronics system and serves as the basis for displaying the system states and switching the output. The vac-
uum level is shown in the bar display.
The ejector has an integrated air saving function and automatically regulates the vacuum in suction
mode:
• The electronics switch off the venturi nozzle as soon as the set vacuum limit value H1 is reached.
• When objects with airtight surfaces are picked up, the integrated non-return valve prevents the vac-
uum from dropping.
• If the system vacuum drops below the limit value H1-h1 due to leakages, the venturi nozzle is
switched back on.
If small volumes are to be evacuated, the set switching point H1 may be exceeded considerably
before the vacuum is switched off. This system behavior does not constitute an error.
5.2Depositing the Workpiece/Part (Blowing Off)
In blow off mode, the vacuum circuit of the ejector is supplied with compressed air. This ensures that the
vacuum drops quickly, allowing the workpiece to be deposited quickly.
“Blow off” mode can be controlled externally or internally.
• When controlled externally, blow off mode is activated by the “blow off” signal input.
• During internally controlled automatic blow off, the “blow off” valve is activated for a defined pe-
riod after “suction” mode is exited.
The ejector also has a manual mode. In this mode, the ejector can be controlled using the but-
tons on the ejector’s foil keypad. See the “Manual mode” section for more details.
5.3Operating Modes
If the ejector is connected to the supply voltage, it is in automatic mode and ready for operation. This is
the normal operating mode, in which the ejector is operated by the system controller.
In addition to automatic operation, you can also use the keys on the ejector to change the operating state
and switch to manual mode.
The ejector is always parameterized in automatic mode.
5.3.1Operation and Settings
The three keys on the foil keypad are used for operation and setting the parameters. If no parameters are
set, the ejector is in display mode. The current vacuum is displayed.

General Description of Functions
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If settings are changed, undefined states of the system may occur for a short time (for approx. 50ms).
5.3.2Manual Operating Mode
WARNING
Through an external signal, manual operation is exited, external signals are evalu-
ated and system parts move.
Personal injury or damage to property due to collisions
4Ensure that the danger zone of the system is clear of people during operation.
4Wear the required personal protective equipment (PPE) when working in the danger
zone.
WARNING
Falling objects due to incorrect operation in manual mode
Risk of injury
4Higher level of attention
4Ensure that there are no persons within the danger zones of the machine/system
In manual mode, a higher level of attention is advisable because incorrect operation may cause gripped
parts to fall, resulting in injuries.
In manual mode, the “suction” and “blow off” ejector functions can be controlled independently of the
higher-level controller using the buttons on the operating panel. In this operating mode, the “H1” and
“H2” LEDs both flash.
Because the valve protection function is deactivated in manual mode, this function can be used to locate
and rectify leaks in the vacuum circuit.
Activating the Operating Mode
Press and hold the or button for more than 3 seconds.
Manual suction
The button activates “suction” on the ejector.
Press the or button to exit the “suction” operating state again.
When the air saving function is switched on, it is also active in the “Manual Operation” operating mode.
Manual blow off
The button activates “blow off” on the ejector for as long as the button is pressed. The H1 and H2
LEDs light up simultaneously.
Deactivating the Operating Mode
Using the button or through an external state change by signal inputs.
The valve protection function is not active in manual mode.

General Description of Functions
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5.4Viewing and Setting Parameters
The following parameters can be set for the ejector:
• The vacuum limit value H1 for the control
• The vacuum limit value H2 for the signal output
• The blow off period for the time-controlled blow off
The hystereses for the vacuum limit values are pre-defined.
The table below shows the various options
For H1, the hysteresis h1 is always 20% of the H1 value; the hysteresis h2 is always 10mbar.
LED bar dis-
play
H1 h1 H2 h2 Blow off time
0% — — — — External
10% — — 100mbar 10mbar 20ms
20% 200mbar 40mbar 200mbar 10mbar 50ms
30% 300mbar 60mbar 300mbar 10mbar 100ms
40% 400mbar 80mbar 400mbar 10mbar 250ms
55% 550mbar 110mbar 550mbar 10mbar 500ms
65% 650mbar 130/75mbar 1) 650mbar 10mbar 750ms
75% 750mbar 150/75mbar 1) 750mbar 10mbar 1000ms
Max. Control function deactivated — — 1500ms
1) If a value > (H1-h1) is selected for H2, the hysteresis h1 is dynamically adjusted so that (H1-h1) is 25mbar
above H2.
The value set for H1 must always be greater than the value set for H2. Only settings that meet this specifi-
cation can be made.
Setting Parameters
The LEDs assigned to the parameters flash to indicate which value is currently being displayed or changed.
Operating structure overview

General Description of Functions
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1. Press the button to select the parameter to be changed:
Press once => first parameter “Vacuum limit value H1”
Press twice => second parameter “Vacuum limit value H2”
Press three times => third parameter “Blow off time”
ðThe LED for the selected parameter flashes.
2. Change the selected parameter by pressing the or button.
ðThe bar display LED increases or decreases.
3. Press the button to leave adjustment mode.
ðThe value will flash briefly to indicate that a changed parameter is being applied.
5.5Locking the Keypad
4Pressing the and keys at the same time locks the keys.
4Pressing both keys again unlocks the keypad.
5.6Vacuum Monitoring
The ejector has an integrated sensor for monitoring the current system vacuum. The vacuum level pro-
vides information about the process and has an effect on the following signals and parameters:
• The limit value LED H1
• The limit value LED H2
• The signal output H2
5.7Signal Output
The ejector has a signal output.
The signal output is a normally open (NO) contact and cannot be changed.
The signal output is switched on or off when the system vacuum is higher or lower than the relevant limit
value.
5.8Control Function
The ejector allows you to conserve compressed air or prevent an excessive vacuum from being generated.
Vacuum generation is interrupted when the set limit value H1 is reached. If leakage causes the vacuum to
fall below the hysteresis limit value (H1-h1), vacuum generation resumes.
The control function can be deactivated by setting the threshold value for H1 to “Max.”.
5.9Depositing the Workpiece/Part (Blowing Off)
In blow off mode, the vacuum circuit of the ejector is supplied with compressed air. This ensures that the
vacuum drops quickly, allowing the workpiece to be deposited quickly.
The ejector provides two blow off modes for selection:
•Externally controlled blow off: The “blow off” valve is controlled directly by the “blow off” signal
input. The ejector switches to blow off mode for as long as the signal is present.
•Internally time-controlled blow off: The “blow off” valve is automatically activated for the config-
ured time period as soon as the ejector leaves “suction” mode. This function makes it possible to
save an output on the controller.
4The time-controlled blow off is activated by setting a value greater than zero for the blow off time.

General Description of Functions
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5.10Supply Voltage Display
In operating modes in which no LEDs are activated, the “Max” LED lights up briefly. This indicates a sup-
ply voltage.
5.11Signal Type
The signal type, or the ejector switching behavior (PNP or NPN) of the electrical signal inputs and the sig-
nal output, is permanently set on the device and is therefore dependent on the ejector version.
5.12Control Concept for NO Ejectors
1
1
0
0
“Suction” [IN1]
“Blow off” [IN2]
“Blow off” state
“Suction” state
-p
p
0bar
0bar
5.13Control Concept for NC Ejectors
1
1
0
0
“Suction” [IN1]
“Blow off” [IN2]
“Blow off” state
“Suction” state
-p
p
0bar
0bar

General Description of Functions
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5.14Vacuum unit
The vacuum level in the LED bar is shown as a percentage of the maximum possible vacuum.
If the vacuum is outside the permitted range, the LED next to this bar flashes rapidly. That means the LED
flashes “10%” when overpressure is applied.