Schmalz SCPS Series User manual

Innovative Vacuum for Automation
EN
Operating instructions
Compact ejector SCPS
30.30.01.00422/05 | 07.2018

SCHMALZ SCPS
CONTENTS
1Safety Instructions.................................................................................................... 1-4
Important symbols........................................................................................................................1-4
General safety instructions...........................................................................................................1-4
Intended use................................................................................................................................1-5
Installation and operation .............................................................................................................1-6
2Product Overview...................................................................................................... 2-7
General description of functions...................................................................................................2-7
Vacuum generation (picking up the workpiece).............................................................................2-7
Blow-off (depositing the workpiece) ..............................................................................................2-7
Vacuum/pressure display.............................................................................................................2-8
Versions.........................................................................................................................................2-8
Ejector version PNP or NPN.........................................................................................................2-8
Electrical connection ....................................................................................................................2-8
Ejector design................................................................................................................................2-9
Operating and display elements .................................................................................................2-10
3Description of Functions........................................................................................ 3-12
Operating modes..........................................................................................................................3-12
Ansteuerung Ejektorvariante NO................................................................................................3-14
Ansteuerung Ejektorvariante NC ................................................................................................3-14
General functions.........................................................................................................................3-15
Manual mode.............................................................................................................................3-15
Monitoring the system vacuum...................................................................................................3-16
Control function..........................................................................................................................3-16
Blow-off modes ..........................................................................................................................3-16
Signal output..............................................................................................................................3-16
Vacuum unit...............................................................................................................................3-17
Operating voltage display...........................................................................................................3-17
Locking the keypad....................................................................................................................3-17
Setting the blow-off volume flow.................................................................................................3-17
4Operation and Settings........................................................................................... 4-18
Viewing and setting parameters..................................................................................................4-18
Overview of the operating structure ...........................................................................................4-19
5Operation.................................................................................................................. 5-20
Overview....................................................................................................................................5-20
Mounting....................................................................................................................................5-20
Pneumatic connection................................................................................................................5-21
Electrical connection ..................................................................................................................5-22
Pin assignment of the connection plug........................................................................................5-23
Projektieren................................................................................................................................5-23
Start of operations......................................................................................................................5-24

SCHMALZ SCPS
6Maintenance............................................................................................................. 6-25
General maintenance...................................................................................................................6-25
Exterior soiling ...........................................................................................................................6-25
Silencer......................................................................................................................................6-25
press-in filters.............................................................................................................................6-25
Warranty, spare parts and wearing parts....................................................................................6-25
Spare and wearing parts ............................................................................................................6-26
Troubleshooting...........................................................................................................................6-26
Accessories..................................................................................................................................6-27
7Technical Data ......................................................................................................... 7-28
Electrical parameters...................................................................................................................7-28
Mechanical data...........................................................................................................................7-29
General parameters ...................................................................................................................7-29
Materials used............................................................................................................................7-29
Mechanical parameters..............................................................................................................7-29
Dimensions................................................................................................................................7-30
Pneumatic circuit diagrams.........................................................................................................7-31
8Conformity Declaration .......................................................................................... 8-32

SCHMALZ SCPS
1-4
1 SAFETY INSTRUCTIONS
IMPORTANT SYMBOLS

This symbol indicates important information and instructions.
Caution!
This symbol indicates a potentially dangerous situation.
If it is not avoided, slight or minor injuries may result.
Danger!
This symbol indicates an immediate hazard.
If it is not avoided, death or serious injuries may result.
GENERAL SAFETY INSTRUCTIONS
These operating instructions contain important information on using the ejector. Please
read the operating instructions thoroughly and keep them for later reference.
Never look into any open or closed vacuum vents (e.g. vacuum connec-
tions or suction pads).
Serious injuries could occur as a result. Eyes can be sucked in.
Compressed air can cause closed containers to explode. A vacuum can cause closed
containers to implode.
The ejector may only be operated with a silencer. Never look into the exhaust air jet of
the silencer.
The ejector emits noise. We recommend wearing ear protection.
This device is not intended for use with hazardous dust, oil mist, vapors or aerosols, etc.
If drawn in, these materials will enter the exhaust air and may result in poisoning.
Use only the connections, mounting holes and attachment materials that have been pro-
vided.
Carry out mounting and removal only when the device is in an idle, depressurized state.
No person may sit or stand in the area in which the load is to be transported.
No person may sit or stand in the danger zone while the machine or system is in auto-
matic mode.
Components may be installed by trained specialist personnel only.

SCHMALZ SCPS
1-5
Specialist personnel must be familiar with current safety rules and requirements. For ex-
ample, these apply to the use of components such as solenoid valves and pressure
switches as well as to controllers used in devices, machines and systems.
Specialist personnel must also be familiar with the system’s control concept. In particu-
lar, they must be familiar with the system’s redundant control components and feedback
signals.
INTENDED USE
The ejector is designed to generate a vacuum for gripping and transporting objects when
used in conjunction with suction pads. Neutral gases in accordance with EN 983 are ap-
proved as evacuation media. Neutral gases include air, nitrogen and inert gases (e.g. argon,
helium and neon). Aggressive gases or media such as acids, acid fumes, bases, biocides,
disinfectants or detergents are not permitted.
The ejector is not suitable for transporting or sucking through liquids or bulk ma-
terial such as granulates.
Personal injury or damage to the ejector may occur.

SCHMALZ SCPS
1-6
INSTALLATION AND OPERATION
For safe installation and trouble-free operation, please observe and comply with the follow-
ing points:
The ejector may only be operated using power supply units with protected
extra-low voltage (PELV). The system must incorporate safe electrical cut-
off of the power supply in compliance with EN60204.
Do not operate the ejector in environments where there is a risk of
explosion.
Risk of fire and explosion.
Output signals (discrete signals as well as IO-Link signals) can change
when the power supply is switched on or the M12 connectors are plugged
in. Depending on the function of the machine/system, this can result in
serious personal injury or damage to the equipment.
The device may not be operated outside its specified performance limits.
Doing so may cause it to malfunction or be destroyed.
During installation and maintenance, make sure that the ejector is disconnected
and depressurized and that it cannot be switched on again without authorization.
Personal injury or damage to the ejector may occur.
Protect the ejector from damage at all times.
No modifications may be made to the ejector.
Opening the ejector will damage the “tested” labels. This voids the warranty.
Connection symbols and labels are located on the ejector.
These must be observed.
Only the intended connections may be used.
Pneumatic and electrical line connections must be securely connected and attached to
the ejector.
The ejector may be installed in any position.
If these instructions are not observed, malfunctions, material damage and serious injury
–including fatal injury –may result.
If the ejector is no longer operative, the components must be disposed of in an ecologi-
cally sound manner.

SCHMALZ SCPS
2-7
2 PRODUCT OVERVIEW
GENERAL DESCRIPTION OF FUNCTIONS
VACUUM GENERATION (PICKING UP THE WORKPIECE)
The ejector is designed for vacuum handling of parts in combination with suction systems.
The Venturi nozzle is activated and deactivated via the suction signal input. In the NO ver-
sion, the Venturi nozzle is deactivated when the suction input signal is present. In the NC
version, the Venturi nozzle is activated when the suction input signal is present.
An integrated sensor records the vacuum generated by the Venturi nozzle. This is evaluated
by an electronics system and serves as the basis for displaying the system states and
switching the output.
The ejector has an integrated air-saving function. The ejector automatically regulates the
vacuum while in suction mode. The electronics system switches the Venturi nozzle off when
the switching point H1 set by the user is reached.

If small volumes are to be evacuated, the set switching point H1 might be ex-
ceeded considerably before the vacuum is switched off. This system behavior
does not constitute an error.
When objects with dense surfaces are picked up, the integrated non-return valve prevents
the vacuum from dropping. If leakage causes the system vacuum to drop below the switch-
ing point H1-h1, the Venturi nozzle is switched on again.
BLOW-OFF (DEPOSITING THE WORKPIECE)
In blow-off mode, the vacuum circuit of the ejector is supplied with compressed air. This en-
sures that the vacuum drops quickly, depositing the workpiece quickly as well. Blow-off
mode can be controlled externally or internally.
When controlled externally, blow-off mode is activated by the “blow-off” signal input.
When controlled internally (automatic blow-off), the blow-off valve is actuated for a defined
period after suction mode is exited.

The ejector also has a manual mode. In this mode, the ejector can be controlled
using the buttons on the ejector’s foil keypad. See the “Manual mode” section for
more details.

SCHMALZ SCPS
2-8
VACUUM/PRESSURE DISPLAY
The current system vacuum is always displayed in the 8-digit LED bar display. The 2 LEDs,
H1 and H2, indicate which range the vacuum level is in relative to the threshold
values set.
VERSIONS
Each ejector has a specific item designation (e.g. SCPS-10-G2-NO-M12-5-PNP).
The item designation can be broken down as follows:
Type
Perfomance
class
Pneumatic
connection
Idle position
Electrical
connection
Signal input /
Signal output
SCPS
07
10
15
G2
(2x G1/8”)
NO
Normally open
NC
Normally closed
M12-5
(1xM12, 5-pin)
NPN
PNP
EJECTOR VERSION PNP OR NPN
The switching properties of the ejector’s electrical inputs and output are permanently set on
the device, meaning they are independent of the version.
Input
Output
NPN
PNP
ELECTRICAL CONNECTION
The electrical connection is established using a 5-pin M12 connector that supplies the ejec-
tor with voltage, and contains the two input signals and the output signal. The inputs and
outputs are not electrically isolated from one another.

SCHMALZ SCPS
2-9
EJECTOR DESIGN
Only screw unions with cylindrical G-threads can be used at pos. 4 and pos. 8.
We recommend using washers on the mounting holes.
Do not look into the exhaust outlet (compressed air) during operation!
Position
Description
Max. tightening
torque
1
Process state display: suction/blow-off
2
Controls
3
Blow-off valve screw
4
G1/8" vacuum connection (label: 2 [V])
4 Nm
5
M12 electrical connection
Hand-tight
6
Controller
7
Mounting holes
2 Nm
8
Compressed air connection
G1/8" in H version (label: 1 [P])
4 Nm
9
Silencer cover
0,5 Nm
10
Exhaust outlet (label 3)
3
4
1 5
6
8
7
9
10
2

SCHMALZ SCPS
2-10
OPERATING AND DISPLAY ELEMENTS
The foil keypad with the LED bar and 4 additional LEDs allows for very simple operation of
the ejector.
Position
Description
1
LED-bar
2
LEDs for threshold values H1 / H2
3
MENÜ - button
4
UP - button
5
DOWN - button
6
LED process state: suction
7
LED process state: blow-off
PROCESS STATE LEDS
The process states „Suction“ and „Blow-off“ are each assigned an LED.
Process state LEDs
Ejector status
LEDs are both off
No suction on ejector
Suction LED
is continuously lit
Ejector is in suction state or being con-
trolled
Blow-off LED
is continuously lit
Ejector blows off
5
1
7
4
236