Schmalz SMPi 20,SMPi 25 Operating Instruction

SCHMALZ SCPI / SMPI

EN

Operating Instruction

Compact ejector SMPi 20 and 25

30.30.01.00491/03 | 05.2017

Innovative Vacuum for Automation

SCHMALZ SCPI / SMPI

1-2

CONTENTS

1 Safety instructions ............................................................................................. 1-4

Important symbols ....................................................................................................................... 1-4

General safety information .......................................................................................................... 1-4

Intended use ................................................................................................................................ 1-5

2 Start-up ................................................................................................................ 2-6

Installation and operation ............................................................................................................ 2-6

Electrical connection ................................................................................................................... 2-7

Pneumatic connection ................................................................................................................. 2-7

Setting the blow-off volume flow ................................................................................................. 2-8

3 Description .......................................................................................................... 3-8

Version overview ......................................................................................................................... 3-8

Ejector design .............................................................................................................................. 3-9

Operating and display elements .................................................................................................. 3-10

General function description........................................................................................................ 3-11

Operating modes ......................................................................................................................... 3-13

Control concept for IMP ejectors ................................................................................................. 3-14

Status display for system vacuum ............................................................................................... 3-15

Valve LEDs .................................................................................................................................. 3-17

Monitoring of the valve switching frequency (valve protection function) ..................................... 3-17

“Diagnostics” signal output (OUT 1) ............................................................................................ 3-17

4 Operating and menu concepts .......................................................................... 4-18

Menu authorisation ...................................................................................................................... 4-18

Manual mode ............................................................................................................................... 4-19

Basic menu .................................................................................................................................... 4-20

Setting of switching points for the air-saving function with [H-1] and [h-1] ................................ 4-22

Setting of switching points for the signal output with [H-2] and [h-2] .......................................... 4-23

Zero-point adjustment (calibration) [CAL] ................................................................................... 4-24

Counters, software versions and serial numbers ...................................................................... 4-25

Cycle counters [ct1] and [ct2] ...................................................................................................... 4-26

Displaying the cycle counters ...................................................................................................... 4-26

Software version [SoC] ................................................................................................................ 4-27

Serial number [Snr] ..................................................................................................................... 4-27

Configuration menu ...................................................................................................................... 4-28

Configuration of the vacuum unit [uni] ......................................................................................... 4-30

Configuration of the signal output [out] ....................................................................................... 4-30

Configuration of the air-saving function [ctr]................................................................................ 4-31

Configuration of the blow-off function [bLo]................................................................................. 4-31

Rotating the display screen [dPy] ................................................................................................ 4-32

Locking the menus using a PIN code [Pin] ................................................................................. 4-33

Resetting to the factory settings (Clear All) [rES] ........................................................................ 4-34

5 Maintenance ........................................................................................................ 5-35

Spare and wearing parts ............................................................................................................. 5-36

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6 Errors................................................................................................................... 6-37

Troubleshooting ........................................................................................................................... 6-37

Error codes .................................................................................................................................. 6-37

7 Technical data .................................................................................................... 7-38

Electrical data ................................................................................................................................ 7-38

Electrical connection ................................................................................................................... 7-40

Electric Connection ..................................................................................................................... 7-41

Internal wiring of electrical isolation ............................................................................................ 7-41

Mechanical data ............................................................................................................................. 7-42

Dimensions .................................................................................................................................. 7-43

Pneumatic circuit plans ............................................................................................................... 7-45

Overview of display symbols ....................................................................................................... 7-46

Factory settings ............................................................................................................................. 7-47

8 Declaration of conformity .................................................................................. 8-48

SCHMALZ SCPI / SMPI

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

This symbol identifies important information and instructions.

Caution!
This symbol identifies a potentially dangerous situation.
If it is not avoided, slight or minor injuries may result.

Danger!
This symbol identifies an immediate hazard.
If it is not avoided, death or serious injuries may result.

Never look into any open or closed vacuum vents (e.g. vacuum connec­tions or suction pads).
Serious injuries could occur as a result. Eyes can be sucked in.

1 SAFETY INSTRUCTIONS

Important symbols

General safety information

 These operating instructions contain important information on using the ejector. Please

read the operating instructions thoroughly and keep them for later reference.

 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, vapours or aerosols,

etc. If drawn in, these materials will enter the exhaust air and may result in poisoning.

SCHMALZ SCPI / SMPI

1-5

The ejector is not suitable to be used for the transportation or through-suction of
liquids or bulk materials such as granulates.
Personal injury or damage to the ejector may otherwise occur.

The ejector must not be used to fill pressurised containers or to drive cylinders,
valves or other pressure-operated function elements.
Personal injury or damage to the ejector may otherwise occur.

 Use only the connections, attachment holes and attachment materials that have been

provided.

 Carry out mounting and removal only when the device is in a disconnected, depressur-

ised state.

 Do not sit or stand in the area in which the picked-up payload is transported.
 Do not sit or stand in the danger area while the machine or system is in automatic mode.
 Components may be installed by trained specialist personnel only.
 Specialist personnel must be familiar with the most current safety rules and require-

ments. These apply to the use of such components as solenoid valves and pressure
switches and to control units for devices, machines and systems, for example.

 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 for generating a vacuum for gripping and transporting objects when
used with suction pads. Neutral gases in accordance with EN 983 are approved as media to
be evacuated. 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.

SCHMALZ SCPI / SMPI

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The ejector may only be operated via power supply units with protected
extra-low voltage (PELV). The system must incorporate safe electrical cut­off of the power supply in compliance with EN60204.

The device may not be operated in environments where there is a risk of
explosion.
Risk of fire and explosion.

The device may not be operated outside its specified capacities.
Doing so may either cause the device to malfunctions or destroy the device.

During installation and maintenance, make sure that the ejector is disconnected
and depressurised and that it cannot be switched on again without authorisation.
Personal injury or damage to the ejector may otherwise occur.

2 START-UP

Installation and operation

For safe installation and smooth operation, please observe and maintain the following
points:

 Protect the ejector from being damaged at all times.
 No modifications may be made to the ejector.
 Exclusion of warranty if X-Pump has been opened by the customer.
 Connection symbols and designations 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 notices are not observed, then malfunctions, material damage and serious injury

– including fatal injury – could occur as a result.

 If the ejector is no longer operative, the components must be disposed of in an ecologi-

cally sound manner.

SCHMALZ SCPI / SMPI

2-7

Line cross-section internal diameter1)

Compressed air side

Vacuum side

8 mm

9 mm

Electrical connection

 The electrical connection of the ejector is made using 8-pin M12 male connector. The pin

assignment is described in the “Technical data” chapter.

 The plug connectors may not be connected or disconnected when the system is live.
 The ejector may only be operated via power supply units with protected extra-low volt-

age (PELV). The system must incorporate safe electrical cut-off of the power supply in
compliance with EN60204.

 The power supply, signal inputs and signal outputs have a maximum line length of 30

metres.

Pneumatic connection

 Use only well maintained compressed air (air or neutral gas according to EN 983, filtered

40 µm, oiled or unoiled).

 High quality compressed air is important for the prolonged service life of the ejector.
 Dirt particles or foreign bodies in the ejector connections, hoses or pipelines can lead to

partial or complete ejector malfunction.

 Hoses and pipelines should be laid as short as possible.
 Insufficient compressed air is supplied if the internal diameter on the compressed air

side is too small. This prevents the ejector from performing as specified in its defined
performance data.

 Excessive flow resistance occurs if the internal diameter on the vacuum side is too small.

This leads to both a reduction in suction power and increased suction times. Blow-off
times are also lengthened.

 Hose lines must be laid without bends and crimps.
 Only use the hose or pipe internal diameters recommended for the ejector. If this is not

possible, use the next largest internal diameter.

1)

Based on a maximum hose length of 2 m

SCHMALZ SCPI / SMPI

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Do not overwind the stop on the valve screw. A minimum volume flow of approx.
20% is always necessary for technical reasons.

The blow-off volume flow can be set between 20% and 100%.

Product name

Art.-Nr.

SMPi 20 IMP RD M12-8-PT SO (cpl. with connection distributor)

10.02.02.04441

SMPi 20 IMP RD M12-8-PT SO (without connection distributor)

10.02.02.04442

SMPi 25 IMP RD M12-8-PT SO (cpl. with connection distributor)

10.02.02.03480

SMPi 25 IMP RD M12-8-PT SO (without connection distributor)

10.02.02.03334

SMPi 25 IMP ISO_01 RD M12-8-PT SO(without connection distributor)

10.02.02.03649

SMPi 25 IMP ISO_01 RD M12-8-PT SO(cpl. with connection distributor)

10.02.02.03650

SMPi 25 IMP ISO_02 RD M12-8-PT SO(without connection distributor)

10.02.02.03646

SMPi 25 IMP ISO_02 RD M12-8-PT SO(cpl. with connection distributor)

10.02.02.03648

Connection distributor ASV SMPI/SCPI 2xM12-4

10.02.02.03335

Setting the blow-off volume flow

The valve screw for setting the blow-off volume flow is located underneath the vacuum con­nection. The volume flow is reduced by turning the valve screw clockwise and increased by
turning it anti-clockwise. The valve screw is equipped with a stop on both sides.

3 DESCRIPTION

Version overview

SCHMALZ SCPI / SMPI

3-9

Item:

Description

Max. torque

SMPi

SMPi ISO-01

SMPi ISO-02

1

Operating and display elements

2

"Blow-off" valve (NC valve)

0,75 Nm

G3/8“ 0,75 Nm

G1/4“ 0,75 Nm

3

Button for operating the "blow-off"
valve manually

4

Vacuum connection with 3/8" thread

10 Nm

10 Nm

10 Nm

5

Valve screw for blow-off volume flow

6

Integrated power blow-off module
for maximum blow-off volume flow

7

Silencer

8

Electrical connection plug M12, 8-pin

hand-tight

hand-tight

hand-tight

9

"Suction" valve (pulse valve)

0,75 Nm

0,75 Nm

0,75 Nm

10

Compressed air connection with 1/4"
thread

10 Nm

ISO-01

ISO-02

11

Ejector mount

6 Nm

1 Nm

1 Nm

12

Securing screw for silencer

1 Nm

1 Nm

1 Nm

Ejector design

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3-10

Item

Description

1

LED for blow-off valve

2

Status display for system vacuum

3

H1 LED (air-saving function) and H2 LED (parts control signal output)

4

Display (3-digit/7-segment)

5

DOWN button

6

UP button

7

ENTER button

8

MENU button

9

LED for suction valve

Operating and display elements

The ejector can be set and operated easily using the membrane keypad. The current
vacuum and setting values are shown on the three-digit display.

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

The set switching point H1 might be exceeded considerably before the vacuum
is switched off when small volumes are to be evacuated. This system behaviour
does not constitute an error.

General function description

VACUUM GENERATION (WORKPIECE PICK-UP)

The ejector is designed for handling parts using a vacuum together with suction systems.
The Venturi nozzle is activated by the "suction" signal input. On IMP versions, the "suction"

signal input is evaluated for its pulse. This means that "suction" mode is activated on the
ejector when an pulse of at least 50 ms is present. A longer pulse does not affect functional­ity.

An integrated sensor records the vacuum generated by the Venturi nozzle. This is evaluated
by an electronics system and forms the basis of the system status display.

The ejector is available with (RD ejectors) and without (VD ejectors) the air-saving function.
On versions with the air-saving function, the ejector automatically regulates the vacuum
when in suction mode. The electronics system switches the Venturi nozzle off when the H1
switching point set by the user is reached.

When objects with solid surfaces are picked up, the integrated non-return valve prevents the
vacuum from dropping. If the system vacuum drops below the switching point [H1-h1] due to
leaks, the Venturi nozzle is switched back on.

When in automatic mode, the ejector maintains "suction" mode if the power supply fails.
This prevents objects that have been picked up from falling off the suction pad in the event

of a power supply failure. This also applies when the ejector was set to “Venturi nozzle inac-
tive” with air-saving mode activated. In this case, the ejector switches to “Venturi nozzle ac-

tive” (i.e. continuous suction). The energy required to actuate the suction valve (pulse valve)

is supplied in this case by integrated capacitors. When the power supply returns, the ejector
remains in automatic mode with activated air-saving function. If the ejector is in "blow-off"
mode when the power supply fails, the blow-off is stopped and the ejector is set to “Pneu­matically OFF”. This prevents unnecessary consumption of compressed air, thus saving
energy and additional costs. When the power supply returns, the ejector remains in the
“Pneumatically OFF” state.

The power supply is monitored by the electronics system. If the power supply drops below
approximately 21 V, then the air-saving function is deactivated. The suction and blow-off
signal inputs are also no longer processed.

SCHMALZ SCPI / SMPI

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The ejector must not be operated with a closed vacuum connection.
Personal injury or damage to the ejector may otherwise occur.



The ejector also has a manual mode. In this mode, the ejector can be controlled

using the buttons on the membrane keypad. See the “Manual mode” chapter for

more details.

BLOW-OFF (DEPOSITING THE WORKPIECE)

In "blow-off" mode, the vacuum circuit of the ejector is supplied with compressed air. This
ensures that the vacuum drops quickly, depositing the workpiece quickly as well. "Blow-off"
mode is activated by the "blow-off" signal input.

"Suction" mode is simultaneously switched off through the "blow-off" signal input.
On pulse-controlled ejectors, if the suction signal input is still present following the blow-off

status, it is not evaluated. The ejector does not switch to suction mode until after another
pulse.

The blow-off valve is also equipped with a button for manual operation. Using the button for
manual operation, the valve can be set to blow-off mode without a power supply.

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Operating modes

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Suction

signal input

IN1

Blow-off

signal input

IN2

Suction

mode

Blow-off

mode



IMP ejectors are set to “Pneumatically OFF” on delivery. The ejector only starts

the suction procedure after a valid pulse is sent through the suction signal input.

Control concept for IMP ejectors

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Status display

Vacuum monitoring

GREEN

Rising vacuum: Vacuum  H1
Falling vacuum: Vacuum  H1-h1

RED

Vacuum < H1

Status display

Monitoring function

Reaction of ejector

RED

H1 never exceeded in suc­tion cycle

-

Suction valve switches
> 6/3 seconds
(RD ejectors)

Ejector is set to continuous suc­tion (i.e. the ejector then remains

in the “Venturi nozzle active”

state - valve protection function)

Status display for system vacuum

The ejector is equipped with a status display for the system vacuum and monitoring func­tions. System states are indicated in RED or GREEN. The status display is updated after
every suction cycle that is activated over the suction signal input.

During conventional suction cycles, the status display is used to display the system vacuum
level based on the H1 switching point. The status display goes out after a conventional suc­tion cycle ends.

VACUUM MONITORING

MONITORING FUNCTIONS

If the H1 switching point is never reached within a suction cycle, then the status display re­mains RED, even after the cycle is finished and the diagnostic signal output is set..

The ejector has a valve protection function. With the air-saving function activated [ctr=on]
and high leakage rates in the gripper system, the ejector switches constantly between the
“Venturi nozzle active” and “Venturi nozzle inactive” states. The number of valve switching
procedures thus increases rapidly within a short time. In order to protect the ejector and in­crease its service life, the ejector switches the air-saving function off automatically at a
switching frequency of > 6/3 seconds and activates continuous suction (i.e. the ejector then

remains in the “Venturi nozzle active” state). The status display remains RED until the next
suction cycle and the diagnostic signal output is set.

SCHMALZ SCPI / SMPI

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Suction cycle with H1
reached

VD ejectors
RD ejectors:

[ctr=on] and no leakage or
[ctr=oFF]

Suction cycle with vacuum­regulation (air-saving
function)

RD ejectors: [ctr=on]

Suction cycle with vacuum­regulation (air-saving func­tion) where the valve protec­tion function was activated

RD ejectors: [ctr=on]

Suction cycle where H1 is
never exceeded

VD ejectors
RD ejectors

STATUS DISPLAY OVERVIEW

Key:
S: Vacuum ON
B: Vacuum OFF, blow off ON
r: RED
g: GREEN

SCHMALZ SCPI / SMPI

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LED

LED state

Ejector state

Suction valve

LED is continuously lit

NO: No suction on ejector
NC: Suction on ejector
IMP: Suction on ejector

Blow-off valve

LED is continuously lit

Ejector blows off

Valve LEDs

The suction and blow-off valves are each assigned an LED.

Monitoring of the valve switching frequency (valve protection function)

If the suction valve is triggered more than six times within three seconds by the air-saving

function, then the ejector is set to continuous suction (i.e. it remains in the “Venturi nozzle

active” state). The status display turns RED. This indicates the valve protection function.

This remains in place until the next suction cycle begins.

“DIAGNOSTICS” SIGNAL OUTPUT (OUT 1)

The following events activate the “Diagnostics” signal output (OUT 1):

 H1 is never reached during the suction cycle
 Suction valve activates > 6/3 s (valve protection function)

The “Diagnostics” signal output remains activated until the next suction cycle begins.

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

The unit of the current vacuum can be displayed by pressing the button.



The PIN code is set to “000” on delivery, meaning the menus are not locked.



If an incorrect PIN code is entered, then [Loc] is displayed and the menus
remain locked.

If the correct PIN code has been lost, then the ejector must be sent back to the
manufacturer for authorisation.

4 OPERATING AND MENU CONCEPTS

The unit is operated via four buttons on the membrane keypad. Settings are made using
software menus. The operating structure is divided into settings in the basic menu and con­figuration menu. Setting of the ejector in the basic menu is sufficient for standard applica­tions. An extended configuration menu is available for applications with special require­ments.

The ejector is set to display mode when outside the menus. The current vacuum is dis­played.

Menu authorisation

Menus can be protected against unauthorised access by defining a PIN code [Pin] in the
configuration menu. [Loc] flashes in the display when the lock is active, or the PIN code is

requested.
The menus are accessed as follows:

 Press the button.
 Enter the first digit of the PIN code using the or buttons.

 Confirm by pressing the button.
 Enter the remaining digits in the same way.

 Press the button to activate the menus.

The lock is activated again automatically after the selected menu or function is exited. The
PIN code “000” must be set for permanent deactivation of the lock.

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The output signals may change during set-up in manual mode.
Ensure that the machine or system does not start moving as a result.
Personal injury or damage to the ejector could occur as a result.



This is also active in manual mode when the air-saving function is activated
[ctr=on].



The valve protection function is not active in manual mode.



With this type of ejector, blow-off mode cannot be activated when in manual
mode.

The automatic exiting of manual mode through changes to external signals can
cause a handled object to move (suction or blow-off).

Manual mode

Manual mode is used for locating and eliminating leaks in the vacuum circuit. The ejector
can be controlled manually using the buttons on the membrane keypad. In this operating
mode, the H1 and H2 LEDs both flash.

ACTIVATING MANUAL MODE

Activate manual mode as follows:

 Press and hold the and buttons down at the same time for more than 3 sec-

onds.

MANUAL SUCTION

Suction mode is activated in manual mode by pressing the button. Exit suction mode by
pressing the

DEACTIVATING MANUAL MODE

Manual mode is exited from the “Pneumatically OFF” idle setting using the button.
Manual mode is also exited when the status of the external signal inputs is changed.

button again or by pressing the button.

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 4-22

Setting of switching points for
the air-saving function

 4-23

Setting of switching points for
the signal output

 4-24

Setting the blow-off time

 4-25

Zero-point adjustment
(calibration)

BASIC MENU

All settings for standard ejector applications can be made and observed using the basic
menu.

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Value

Description

H1

Deactivation value for air-saving function

h1

Hysteresis of air-saving function

H1-h1

Activation value for air-saving function

H2

Activation value for parts control signal output1)

h2

Hysteresis of parts control signal output

H2-h2

Deactivation value for parts control signal output1)

OVERVIEW OF SWITCHING POINTS

The ejector version with air-saving function is shown here (RD).

1)

Displayed when configuring the [NO] output.

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

When the or button is pressed for approx. 3 seconds, the value to be
changed is scrolled through quickly.



The value is not accepted when exited using the button.



The air-saving function is activated in the configuration menu with [ctr=on] and
deactivated with [ctr=off].

Setting of switching points for the air-saving function with [H-1]
and [h-1]

The deactivation value [H-1] and hysteresis [h-1] of the air-saving function are set using
this function.

When the [H-1] deactivation value is reached or exceeded, then the H1 LED is also
switched on.

The switching points of the air-saving function are set as follows:

 Press the button.
 Enter a valid PIN if the menu is locked.

 Select the desired [H-1] or [h-1] parameter using the or buttons.
 Confirm by pressing the button.

 Change the value using the or buttons.
 Press the button to save the changed value.

The display automatically jumps to the next setting value.

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

When the or button is pressed for approx. 3 seconds, the value to be
changed is scrolled through quickly.



The value is not accepted when exited using the button.



Changes to the configuration of the [no] or [nc] signal output are made in the
configuration menu.

Setting of switching points for the signal output with [H-2] and [h-2]

The activation value [H-2] (when configuring the [no] output) and hysteresis [h-2] of the
parts control signal output are set using this function.

When the [H-2] value is reached or exceeded, then the H2 LED is also switched on.
The switching points of the parts control signal output are set as follows:

 Press the button.
 Enter a valid PIN if the menu is locked.

 Select the desired [H-2] or [h-2] parameter using the or buttons.
 Confirm by pressing the button.

 Change the value using the or buttons.
 Press the button to save the changed value.

The display automatically jumps to the next setting value.

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

The vacuum circuit of the system must be ventilated to the outer atmosphere
before zero-point adjustment is made.



Zero-point adjustment is only possible at an area of 3% from the final value of
the measurement range. This means that the zero point can be adjusted by up
to 30 mbar of vacuum, starting from the original zero point of the sensor.



If the permissible limit of 3% is exceeded, then the [E3] error code is shown in
the display.

Zero-point adjustment (calibration) [CAL]

A zero-point adjustment is made as follows:

 Press the button.
 Enter a valid PIN if the menu is locked.

 Press or until [CAL] appears in the display.
 Confirm by pressing the button.

After confirmation is made, the display flashes briefly and then returns automatically to dis­play mode.

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 4-26

Cycle counters 1

 4-26

Cycle counters 2

 4-27

Software version

 4-27

Serial number

COUNTERS, SOFTWARE VERSIONS AND SERIAL NUMBERS

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Symbol

Function

Description

Counter 1

Counter for suction cycles
(suction signal input)

Counter 2

Counter for valve switching frequency

Displayed position

106

103

100

Digit block



Exit the counter function using the button.

Cycle counters [ct1] and [ct2]

The ejector is equipped with two counters. Counter 1 is increased with each valid pulse on
the suction signal input, and therefore counts the number of suction cycles in automatic
mode. Counter 2 is increased with each switch of the suction valve. The switching frequen­cy of the air-saving function can then be determined from the difference between counters 1
and 2.

Displaying the cycle counters

The cycle counters are displayed as follows:

 Press and hold the and buttons together for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the desired [ct1] or [ct2] counter using the or buttons.
 Confirm by pressing the button.

The final three decimal points of the complete counter value are displayed. The decimal
point at the far right flashes. This corresponds to the three-digit block with the lowest per­ceived value.

The remaining decimal points of the complete counter value can be displayed using the
or buttons. The decimal points show which three-digit block of the complete counter

value is shown in the display.
The complete counter value is comprised of the three digit blocks together:

The current complete counter value in this example is 48 618 593.

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

Exit the software version [SoC] using the button.

Displayed position

106

103

100

Digit block



Exit the serial number [Snr] using the button.

Software version [SoC]

The software version indicates the software currently running on the internal controller. The
software version is displayed as follows:

 Press and hold the and buttons together for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Press or until [SoC] appears in the display.
 Confirm by pressing the button.

Serial number [Snr]

The serial number indicates the production period.
The serial number is displayed as follows:

 Press and hold the and buttons together for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Press or until [Snr] appears in the display.
 Confirm by pressing the button.

The final three decimal points of the serial number are displayed. The decimal point at the
far right flashes. This corresponds to the three-digit block with the lowest perceived value.

The remaining decimal points of the serial number can be displayed using the or
buttons. The decimal points show which three-digit block of the serial number is shown in
the display.

The serial number is comprised of the three digit blocks together:

The current serial number in this example is 48 618 593.

SCHMALZ SCPI / SMPI

4-28

 4-30

Configuration of the vac­uum unit

 4-30

Configuration of the sig­nal type

 4-31

Configuration of the sig­nal output

CONFIGURATION MENU

An extended configuration menu is available for applications with special requirements. The
operating structure is as follows:

SCHMALZ SCPI / SMPI

4-29

 4-31

Configuration of the blow-off func­tion

 4-32

Configuration of the signal type

 4-33

Locking the menus using a PIN
code

 4-34

Resetting to the factory settings
(Clear All)

SCHMALZ SCPI / SMPI

4-30



[-bA]= mbar, [-PA]= kPa, [-iH]= inchHg



The setting of the corresponding switching point [H-2] and hysteresis [h-2] is
made in the basic menu.

Configuration of the vacuum unit [uni]

The unit of the displayed vacuum can be set using this function.
The vacuum unit is set as follows:

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [uni] menu item using the or buttons.
 Confirm by pressing the button.

 Select the desired [-bA], [-PA] or [-iH] unit using the or buttons.
 Confirm by pressing the button.

Configuration of the signal output [out]

The diagnostic signal output (OUT 1) and the parts control signal output (OUT 2) can be
switched between [no] (normally open) and [nc] (normally closed). Both outputs are set at

the same time when this is done.
The signal outputs are configured as follows:

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [out] menu item using the or buttons.
 Confirm by pressing the button.

 Select the desired [no] or [nc] function using the or buttons.
 Confirm by pressing the button.

SCHMALZ SCPI / SMPI

4-31



The setting of the corresponding switching point [H-1] and hysteresis [h-1] is
made in the basic menu.



The [on] function cannot be selected on VD ejectors.

Configuration of the air-saving function [ctr]

This function is used to activate and deactivate the air-saving function.
The air-saving function is configured as follows:

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [ctr] menu item using the or buttons.
 Confirm by pressing the button.

 Select the desired [on] or [oFF] function using the or buttons.
 Confirm by pressing the button.

Configuration of the blow-off function [bLo]

The automatic blow-off function cannot be set on this type of ejector.
Only the externally controlled blow-off function is available [-E-]: the blow-off valve is con-

trolled via the blow-off signal input.

SCHMALZ SCPI / SMPI

4-32



The function of the and buttons also changes together with the display
screen. The Down button becomes the Up button.
The decimal points of the display are shown on the top edge of the screen.



The factory setting is [uPS]. This corresponds to the standard configuration.

Rotating the display screen [dPy]

The display screen can be rotated by 180°.
Rotate the display screen as follows:

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [dPy] menu item using the or buttons.
 Confirm by pressing the button.

 Select the desired [uPS] or [dnS] function using the or buttons.
 Confirm by pressing the button.

SCHMALZ SCPI / SMPI

4-33



The PIN code is set to “000” on delivery, meaning the menus are not locked. A

valid PIN code between 001 and 999 must be entered in order to activate the
menu lock.



The PIN code “000” must be set for permanent deactivation of the lock.



The state of signal inputs and outputs can be changed in parameterisation
mode. Accidental starting of the machine or plant could occur as a result.

Therefore, use the possibility of locking with a PIN code [Pin].

Locking the menus using a PIN code [Pin]

Menus can be protected against unauthorised access by defining a PIN code [Pin].

Activate the menu lock as follows:

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [Pin] menu item using the or buttons.
 Confirm by pressing the button.

 Enter the first digit of the PIN code using the or buttons.
 Confirm by pressing the button.

 Enter the remaining digits in the same way.
 Press the button for more than 3 seconds to save the PIN code.

[Loc] flashes in the display and the configuration menu is exited. The menus are now

locked.

SCHMALZ SCPI / SMPI

4-34

All switching points and configurations are reset to the factory settings. The
counters are not affected by this function.



The zero-point adjustment is also reset. The zero point may need to be set again

[CAL].

The switching points and configuration of the signal output are changed by re­setting to the factory settings. The signal on the signal output may change as a
result.

Resetting to the factory settings (Clear All) [rES]

This function is used to reset the ejector to its factory settings.

 Press the button for more than 3 seconds.
 Enter a valid PIN if the menu is locked.

 Select the [rES] menu item using the or buttons.
 Press the button for more than 3 seconds to reset to the factory settings.

After confirmation is made, the display flashes briefly and then returns automatically to dis­play mode.

The factory settings of the ejector can be found in the appendix.

SCHMALZ SCPI / SMPI

5-35

Replacing the silencer

Step

Description

1

Loosen the fastening screw on the silencer [7] and cover [13] – Keep the screw and O­ring [12] in a safe place.

2

Remove the silencer [7] and cover [13].

3

Attach the new silencer (item no. 10.02.02.03381) and cover [13].

4

Reattach the fastening screw and O-ring [12] and tighten.

Maximum torque = 1 Nm.

5 MAINTENANCE

GENERAL MAINTENANCE

Remove dirt from the outside of the ejector by cleaning with a soft cloth and soap suds
(max. 60 °C). Ensure that the silencer and the controller are not soaked with soap suds.

SILENCER MAINTENANCE

The silencer can become very dirty from the increased effects of dust, oil or chips. This can
reduce the suction power. The silencer should be replaced in this case. Cleaning is not rec­ommended due to the capillary effect of the porous material.

The ejector must only be operated with a silencer in order to avoid impermissible noise lev­els.

Only Standard SCPi

SCHMALZ SCPI / SMPI

5-36

Designation

Art.-Nr.

Connection distributor ASV SMPI/SCPI 2xM12-4

10.02.02.03570

E

Silencer (cube)

10.02.02.03381

V

Silencer (cylinder)

10.02.01.00719

V

Suction valve for IMP ejector (pulse valve) 1,3 W

10.05.01.00280

E

Blow-off valve (NO valve)

10.05.01.00278

E

Observe a maximum torque of 0.75 Nm when tightening the valve fastening
screws.

WARRANTY, SPARE AND WEARING PARTS
This ejector is guaranteed in accordance with our general terms of sale and delivery. The

same applies for spare parts, provided that these are original parts supplied by us.
We fully exclude liability for any damages arising from use of spare parts or accessories that

are not original parts or accessories.
Wearing parts are not covered by the warranty.
Parts are divided into the following types:
E … Spare part

V … Wearing part
VB … Wearing part assembly

Spare and wearing parts

SCHMALZ SCPI / SMPI

6-37

Fault

Possible cause

Solution

Vacuum level is not
reached or vacuum is
created too slowly

Silencer is soiled

Replace silencer

Leakage in hose line

Check hose connections

Leakage on suction pad

Check suction pad

Operating pressure too low

Increase operating pressure
(observe max. limits)

Internal diameter of hose line
too small

See recommended hose diameters

Payload cannot be held
Vacuum level too low

Increase the control range of the air­saving function.

Suction pad too small

Select a larger suction pad

Display shows an
error code

See “Error codes” table

-

Symbol

Error code

Electronics error

Zero-point adjustment outside 3% FS

Actuator supply undervoltage
(display alternates with current vacuum value)

Manual mode not possible during blow-off mode

Actuator/sensor supply undervoltage

Short circuit on OUT signal output

Present vacuum exceeds the measurement range

Overpressure in vacuum circuit



The [E01] error remains in the display after being shown once. Delete the error
by switching off the power supply. If this error occurs again after the power sup­ply is switched back on, then the device must be replaced.

6 ERRORS

Troubleshooting

Error codes

SCHMALZ SCPI / SMPI

7-38

Operating the ejector system outside of the specified values can result in
damage to the system and attached components.

Parameter

Sym

bol

Limit values

Unit

Comment

min.

typ.

max.

Power supply for sensor

US

20,9

24

26,4

V DC

PELV 1)

Rated current for sensor 1,3 W

IS





1002)

mA

No signal output

Voltage for signal outputs (PNP)

UO

US-2



VS

V DC

IO < 150 mA

Current for signal outputs (PNP)

IO





1502)

mA

Short-circuit-proof 3)

Voltage for suction signal input

UIS

9  US

V DC

in reference to GndS

Rated current for suction signal input

IIS  5  mA

Voltage for blow-off signal input

UIB

22,8

24

26,4

V DC

in reference to GndA

Rated current for blow-off signal input

IIB





75

mA

Incl. current for blow­off valve

Pulse length for suction valve

tP

50





ms

Reaction time of signal inputs

tI  15  ms

Reaction time of signal outputs

tO  2  ms

7 TECHNICAL DATA

ELECTRICAL DATA

ELECTRICAL PARAMETERS

1)

The power supply must correspond to the regulations in accordance with EN60204 (protected extra-low voltage).

The power supply, signal inputs and outputs are all protected against reverse polarity.

2)

Pepetitive peak forward current lasting 60ms, repetition rate 560ms.

3)

The signal output is secured against short circuits. However, the signal output is not secured against overloading.

Constant load currents of > 0.15 A can lead to impermissible heating and subsequent destruction of the ejector.

SCHMALZ SCPI / SMPI

7-39

Parameter

Value

Unit

Comment

Display

3

Digit

Red 7-segment LED display

Resolution

 2

Digit

Unit = mbar

Accuracy

 3

% FS

T

amb

= 25 °C, based on

FS final value (full-scale)

Linearity error

 1

%

Offset error

 2

Digit

Entered value after zero-point adjustment

Temperature influence

 3

%

0 °C < T

amb

< 50 °C

Display refresh rate

5

1/s

This only affects the red 7-segment display

(see the “Electrical parameters” section for

signal inputs and outputs).

Idle time before the menu is
exited

2

min

The display mode is accessed automatically
when no settings are made in a menu.

DISPLAY PARAMETERS

SCHMALZ SCPI / SMPI

7-40

Connector

Pin

Core color1)

Symbol

Function

1

White

OUT1

Signal output “Diagnose”

2)

2

Brown

US

Power supply for sensor

3

Green

GndA

Actuator ground

4

Yellow

IN1

"Suction" signal input2)

5

Gray

OUT2

Parts control signal output

2)

6

Pink

IN2

"Blow-off" signal input3)

7

Blue

GndS

Sensor ground

8

Red

-

Not connected

The ejector may only be operated via power supply units with protected
extra-low voltage (PELV). The system must incorporate safe electrical cut­off of the power supply in compliance with EN60204.

The plug connectors may not be connected or disconnected when the system is
live.

Electrical connection

The electrical connection of the ejector is made using an 8-pin M12 male connector. The pin
assignment of the connector is as follows:

M12 8-PIN MALE CONNECTOR – VERSION WITH POTENTIAL ISOLATION (PT)

1)

In connection with Art.-Nr. 21.04.05.00079

2)

in reference to sensor ground GndS

3

in reference to actuator ground GndA

SCHMALZ SCPI / SMPI

7-41

Electric Connection

Internal wiring of electrical isolation

SCHMALZ SCPI / SMPI

7-42

Parameter

Symbol

Limit values

Unit

Comment

min.

typ.

max.

Working temperature of
medium and surrounding area

T

amb

0  50

°C

Humidity

H

rel

10  90

% r.h.

Free from condensation

Protection class





IP65

Operating pressure

p 4 5 7 bar

Operating medium

Filtered air or neutral gas, 40 µm, oiled or unoiled.
Class 5-4-4 compressed air quality according to ISO 8573-1.

Component

Material

Main body

PA

Inner components

Aluminium alloy, brass, galvanised steel,
stainless steel, PU, POM

Controller housing

PA

Silencer cover

PA

Silencer insert

PE

Seals

NBR

Lubrication

Silicone-free

Type

Nozzle -

size

Evacuation

level

Suction -

capacity1)

Air con-

sumption

(suction)1)

Air -

consumption

(blow-off)1)

Noise -

level

1+2)

Weight

mm % l/min

l/min

l/min

dBA

kg

SMPi 20

2,0

85

135

180

200

75

0,56

SMPi 25

2.5

85

185

290

200

78

0.56

MECHANICAL DATA

GENERAL PARAMETERS

MATERIALS USED

MECHANICAL PERFORMANCE DATA

1)

At 4.5 bar

2)

with vacuum applied

SCHMALZ SCPI / SMPI

7-43

SCPi / SMPi

Type

B d G1

G2

G3

G4 H H1

H2

SCPi / SMPi

22,0

6,6

G1/4"

internal

thread

G3/8"

internal

thread

M12x1

external

thread

M4

internal

thread

181.5

131.5

71.5

Type

H3

H4 L L1

L2

L3

X1

X2

Y2

SCPi / SMPi

87.5

76.0

118.5

129.7

112.5

67.5

27.5

14.0

30.0

Dimensions

All dimensions are in mm.

SCHMALZ SCPI / SMPI

7-44

SMPi-ISO01 / ISO02

Typ

B

B1

G2

G3

G4

H

H2

H4

L

SMPi ISO02

37

22

G1/4“-IG

M12x1-

AG

M3

115,5

71,5

5

118,5

SMPi ISO01

53

22

G3/8“-IG

M12x1-

AG

M4

115,5

71,5

7

118,5

Typ

L1

L2

L3

L4

X1

SMPi ISO02

130

112,5

74,5

220

31,25

SMPi ISO01

130

112,5

77,5

215

46

Connection

Max. torque

SMPi

SMPi ISO-01

SMPi ISO-02

Torque of G1 thread

10 Nm

10 Nm

10 Nm

Torque of G2 thread

10 Nm

10 Nm

10 Nm

Torque of G3 thread

Hand tight

Hand tight

Hand tight

Torque of G4 thread

5 Nm

1 Nm

2 Nm

Torque of ejector attachment d
(a washer must always be used)

6 Nm

6 Nm

6 Nm

Maximum torque

SCHMALZ SCPI / SMPI

7-45

SMPi … IMP …

SMPi … IMP …

Pneumatic circuit plans

SCHMALZ SCPI / SMPI

7-46

Symbol

Function

Comment

H1 switching point

Deactivation value of the air-saving function

h1 hysteresis

Hysteresis of the air-saving function

H2 switching point

Activation value for the parts control signal output
(when NO output is configured)

h2 hysteresis

Hysteresis of parts control signal output

Zero-point adjustment
(calibration)

Setting of 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

Serial number

Displays the serial number of the ejector

Vacuum unit

Vacuum unit in which the measurement and setting values
are displayed

Vacuum (in mbar)

The displayed vacuum is shown in mbar.

Vacuum (in kPa)

The displayed vacuum is shown in kPa.

Vacuum (in inHg)

The displayed vacuum is shown in inchHg.

Configuration of
signal output

Menu for configuration of the signal output

Normally open contact

Setting of the signal output as a normally open contact

Normally closed
contact

Setting of the signal output as a normally closed contact

Air-saving function
(control)

Setting of the air-saving function

Air-saving function on

Activation of the air-saving function

Air-saving function off

Deactivation of the air-saving function

Blow-off time

Menu for configuration of the blow-off function

OVERVIEW OF DISPLAY SYMBOLS

SCHMALZ SCPI / SMPI

7-47

Symbol

Function

Comment

“External” blow-off

Selection of externally controlled blow-off

“Internal” blow-off

Selection of internally controlled blow-off (triggered internally;
time can be set)

Display

Selection of the display menu for rotating the display screen

Display top

Display screen not rotated (standard)

Display bottom

Display screen rotated by 180°

PIN code

Entry of the PIN code for unlocking the menu

“Clear all” (reset)

All values are reset to the factory settings.

Menu locked

The keypad and menus remain locked after an incorrect PIN
code is entered.

Menu unlocked

The buttons and menus are unlocked.

Symbol

Function

Factory setting

H1 switching point

750 mbar

h1 hysteresis

150 mbar

H2 switching point

550 mbar

h2 hysteresis

10 mbar / 100 mbar *

Vacuum unit

Vacuum unit (in mbar)

Signal type

PNP switch

Configuration of
output

Normally open contact

Air-saving function

Ejector with air-saving function:

Blow-off function

Externally controlled blow-off

Display

Display screen not rotated

PIN code

FACTORY SETTINGS

* The hysteresis 100mbar applies to the ejectors 10.02.02.04441and 10.02.02.04442,

SMPi 20 IMP RD M12-8-PT SO (with and without connection distributor)

SCHMALZ SCPI / SMPI

8-48

8 DECLARATION OF CONFORMITY

SCHMALZ SCPI / SMPI

8-49

Come visit us on the Internet:

Schmalz online – www.schmalz.com

These operating instructions were originally written in German and have been translated
into English.

The right to make technical changes is reserved. No responsibility is taken for printing errors
or other types of errors.

All information and specifications may be changed without advanced notice.

© J. Schmalz GmbH. All rights reserved.

Schmalz worldwide

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[e-mail]

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J. Schmalz GmbH

Johannes-Schmalz-Str. 1
D-72293 Glatten
Tel. [phone]
Fax [phone]
[e-mail]
www.schmalz.com

30.30.01.00491/03 | 05.2017