Pilz PSSuniversal User manual

PSSuniversal
Installation Manual-21262-EN-07
}Programmable control systems PSS

Preface
This document is a translation of the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for internal purposes. Suggestions and comments for improving this documentation will be
gratefully received.
Source code from third-party manufacturers or open source software has been used for
some components. The relevant licence information is available on the Internet on the Pilz
homepage.
Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®, SafetyBUS p®,
SafetyEYE®, SafetyNET p®, the spirit of safety® are registered and protected trademarks
of Pilz GmbH & Co. KG in some countries.
SD means Secure Digital

Contents
Installation Manual PSSuniversal
21262-EN-07 3
Section 1 Introduction 5
1.1 Validity of documentation 5
1.2 Definition of symbols 5
Section 2 Safety 7
2.1 General safety guidelines 7
2.2 Use of qualified personnel 7
2.3 Safety during installation 7
2.3.1 Supply voltage 7
2.3.2 Installation 8
2.3.3 ESD 9
Section 3 Electromagnetic Compatibility (EMC) 10
3.1 Overview 10
3.2 Making the installation EMC-compliant 11
3.2.1 Connecting the earth cables 11
3.2.2 Cabling 11
3.2.3 Connecting the fieldbuses 12
3.2.4 Equipotential bonding 12
3.2.5 Screening 13
3.2.6 Suppression on inductive loads 13
3.2.7 Installing within an enclosure or wall-mounting 13
3.2.8 Lighting in the control cabinet 14
3.3 Testing the EMC-compliance of an installation 14
Section 4 Installing the PSSu system 16
4.1 Modular structure 16
4.2 Module layout 17
4.3 Connection levels 18
4.3.1 Connections on the base modules 18
4.3.1.1 Colour marking on the connection levels 19
4.3.2 Connections on the compact modules 19
4.4 Installation environment 21
4.4.1 Mounting distances 22
4.5 Mechanical coding of the electronic modules 23
4.5.1 Removing the mechanical coding from an electronic module 25
4.5.2 Removing the mechanical coding from a base module 25
4.6 Steps 27
4.6.1 Procedure for installing the PSSuniversal 27
4.6.2 Procedure for removing the PSSuniversal 27
Section 5 Installing the modules 29
5.1 Head modules 29
5.1.1 Installing the head module 29
5.1.2 Removing the head module 29
5.2 Base modules 30
5.2.1 Installing base modules 30

Contents
Installation Manual PSSuniversal
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5.2.2 Removing base modules 31
5.3 Electronic modules 33
5.3.1 Inserting an electronic module 33
5.3.2 Removing an electronic module 34
5.4 Compact modules 34
5.4.1 Install the compact modules 34
5.4.2 Remove the compact modules 35
5.5 End bracket 36
5.5.1 Install an end bracket on the left 36
5.5.2 Install a connection plate on the right 37
5.5.3 Remove the end bracket on the left 38
5.5.4 Remove the connection plate on the right 39
Section 6 Connecting the PSSu system 40
6.1 Supply voltages 40
6.2 Power supplies 42
6.3 Earthing 46
6.4 Separation of supply 47
6.5 Wiring the base modules 48
6.5.1 Cable requirements 49
6.5.2 Connecting FS inputs and outputs 50
6.6 Wiring the compact modules 50
6.6.1 Cable requirements 51
6.7 Wiring test and function test 51

Introduction
Installation Manual PSSuniversal
21262-EN-07 5
1 Introduction
1.1 Validity of documentation
This installation manual contains all the information you need to install a PSSu system.
A description of its functionality plus operational guidelines can be found in the following
documents:
}System Description PSS 4000
}PSSuniversal System Description
The modules for the PSSuniversal are described in detail in the respective operating manu-
als.
This documentation is intended for instruction and should be retained for future reference.
This documentation is valid for the PSSuniversal.
It is valid until new documentation is published. The latest documentation is always en-
closed with the unit.
1.2 Definition of symbols
Information that is particularly important is identified as follows:
DANGER!
This warning must be heeded! It warns of a hazardous situation that poses
an immediate threat of serious injury and death and indicates preventive
measures that can be taken.
WARNING!
This warning must be heeded! It warns of a hazardous situation that could
lead to serious injury and death and indicates preventive measures that can
be taken.
CAUTION!
This refers to a hazard that can lead to a less serious or minor injury plus
material damage, and also provides information on preventive measures
that can be taken.
NOTICE
This describes a situation in which the product or devices could be dam-
aged and also provides information on preventive measures that can be
taken. It also highlights areas within the text that are of particular import-
ance.

Introduction
Installation Manual PSSuniversal
21262-EN-07 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.

Safety
Installation Manual PSSuniversal
21262-EN-07 7
2 Safety
2.1 General safety guidelines
Please note the following general safety guidelines:
}Ensure VDE and local regulations are met, especially those relating to safety. The rel-
evant safety regulations for the respective application must also be met.
}The PSSuniversal is exclusively designed for use in an industrial environment. It is not
suitable for use in a domestic environment, as this can lead to interference.
}The deciding factors in how to use the device are the requirements of the relevant certi-
fication body (e.g. BG or TÜV).
}In particular please observe the wiring regulations.
}If the modules are altered in any way, such as exchanging a component or carrying out
soldering work, the guarantee, and any approval, will be rendered invalid.
}The date of manufacture can be found on the quality seal.
}Modules must be disposed of properly when they reach the end of their service life.
2.2 Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.
A competent person is a qualified and knowledgeable person who, because of their train-
ing, experience and current professional activity, has the specialist knowledge required. To
be able to inspect, assess and operate devices, systems and machines, the person has to
be informed of the state of the art and the applicable national, European and international
laws, directives and standards.
It is the company’s responsibility only to employ personnel who
}Are familiar with the basic regulations concerning health and safety / accident preven-
tion,
}Have read and understood the information provided in this description under "Safety"
}Have a good knowledge of the generic and specialist standards applicable to the spe-
cific application.
2.3 Safety during installation
2.3.1 Supply voltage
Please refer to the technical details of the head modules with integrated supply voltage or
of the supply voltage modules.
The PSSuniversal requires a 24 VDC supply. Check that the external power supply
provides this voltage.
The tolerance of the supply voltage must correspond to the technical details of the supply
voltage modules. The correct operation of the PSSuniversal cannot be guaranteed outside
this range.

Safety
Installation Manual PSSuniversal
21262-EN-07 8
Overvoltage and interference spikes can damage the PSSuniversal. You should therefore
ensure that appropriate EMC measures are taken.
To achieve the lowest possible residual ripple (< ± 1.2 V), we recommend that you install a
three-phase bridge rectifier or regulated supply.
Protect the external power supply by fitting a fuse between the external power supply and
the controller. The size of the fuse will depend on the specification of the external power
supply, the cable cross section and on local regulations.
WARNING!
Risk of electrocution!
Safe electrical isolation must be ensured for the external power supply that
generates the supply voltage. Power supplies must conform to EN 60950,
03/97, section 2.3, EN 60742, 9/95 and EN 50178, 10/97.
Connect together the 0V connections on all the 24 V power supplies and earth the 0 V
mains at a single point, or ensure that measures are in place to monitor for earth faults.
The connection of the 0 V supply to the central earth bar or earth fault monitor must be in
accordance with national regulations (such as EN60204-1, NFPA 79:17-7, NEC: Article
250, for example).
WARNING!
Risk of electrocution!
If voltages higher than 50VAC or 120VDC are connected to the PSSuni-
versal, e.g. to switch contacts on relay modules, please note the following:
– Specific accident prevention regulations apply.
– For safety reasons, only the protective earth (PE) may be connected
to the C-rail of the supply group.
2.3.2 Installation
Please note:
}Install the PSSuniversal in a protected environment, e.g. in a control cabinet or a pro-
tected interior compartment.
}Comply with the protection class required for the installation environment.
}Refer to the technical details of the relevant modules during installation.
}Ensure there is sufficient ventilation to prevent heat building up. Monitor the ambient
temperature to ensure it complies with the values stated in the modules' technical data.

Safety
Installation Manual PSSuniversal
21262-EN-07 9
CAUTION!
Risk of burns!
If a PSSu system is operated at an ambient temperature of more than 45
°C, surface temperatures on the housing may reach more than 90 °C at full
load.
Do not touch the housing!
}In extreme ambient conditions, additional measures such as air conditioning may be re-
quired in order to keep within the prescribed value range.
}Sufficient protection must be provided to prevent the built-in controller from being
touched unintentionally.
}Further information on installation can be found in the chapter entitled Installing the
PSSu system [ 16].
2.3.3 ESD
NOTICE
Damage due to electrostatic discharge!
Electrostatic discharge can damage components. Ensure against discharge
before touching the product, e.g. by touching an earthed, conductive sur-
face or by wearing an earthed armband.

Electromagnetic Compatibility (EMC)
Installation Manual PSSuniversal
21262-EN-07 10
3 Electromagnetic Compatibility (EMC)
3.1 Overview
The PSSu is designed for use within an electromagnetic industrial environment. To ensure
electromagnetic compatibility the correct procedures must be carried out when installing the
PSSu.
A device is electromagnetically compatible if
}It functions without error in a given electromagnetic environment.
}It does not adversely affect its own environment.
Electromagnetic interference can reach the PSSu through:
}Fields
}Power supplies
}Earth cabling
}Bus connections
}Interfaces
}Input and output cables
The interference can be transferred from the source to the receiver (interference sink) via
the coupling routes.
Interference reaches the interference sink (e.g. the PSSu) in various ways:
}DC coupling:
DC coupling occurs if the source and sink of interference have common cable connec-
tions. The common cable presents complex resistances, inducing potential differences.
– Typical sources of interference are switches/relays, running motors or varying po-
tentials for other systems on the same power supply.
}Capacitive (electrical) coupling:
A different potential between the source and interference sink (e.g. two cables) creates
an electrical field. Coupling is proportional to the rate of voltage change.
– Typical sources of interference are contactors, static discharge, parallel signal
cables.
}Inductive (magnetic) coupling:
A live cable produces a magnetic field which also surrounds adjacent cables. Interfer-
ence voltage is induced. Coupling is proportional to the rate of current change.
– Typical sources of interference are mains cables running in parallel, live cables,
high frequency cables, inductors, transformers, motors.
}Electromagnetic coupling
A cable can emit a signal as a radio wave. This wave is then picked up by another
cable.
– Typical sources of interference are transmitters such as radios, sparks from spark
plugs, welding equipment, etc.

Electromagnetic Compatibility (EMC)
Installation Manual PSSuniversal
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NOTICE
Powerful HF transmitters should only be operated at a distance of more
than 0.6 m.
}Static discharge:
Static discharge occurs where there are very high differences in potential between two
points. If the two points are brought closer together or if the potential difference is in-
creased, discharges can occur in the air gaps.
– Typical source of interference: people who are statically charged from a synthetic
carpet, for example.
3.2 Making the installation EMC-compliant
3.2.1 Connecting the earth cables
Please note:
}A conductor cross section of at least 2.5 mm2 should be used for the connection to the
central earth bar. Connections should be kept as short as possible.
}Connections to the earth bar should always be in star form.
}Connect together the 0V connections on all the 24 V power supplies and earth the 0 V
mains at a single point, or ensure that measures are in place to monitor for earth faults.
}Earthed supply voltages offer the best noise immunity.
}The connection of the 0 V supply to the central earth bar or earth fault monitor must be
in accordance with relevant national regulations (such as EN60204-1, NFPA 79, NEC:
Article 250).
}Define a central earthing point.
}Make sure that the control system and motor are earthed correctly.
}Earth the mounting plate.
}Connections should be protected from corrosion.
}Flexible earthing straps should be used on moving earth parts (e.g. machine parts,
gates). Ensure these earthing straps are as short and wide as possible.
3.2.2 Cabling
It is possible to differentiate between cables according to their function. The following
groups exist:
}Group 1: Data and supply lines for DC voltages below 60 V and AC voltages below 25
V
}Group 2: Data and supply lines for DC voltages from 60 V to 400 V and AC voltages
from 25 V to 400 V.
}Group 3: Supply lines above 400 V
Cabling inside buildings
}The cable groups listed above should be laid separately.

Electromagnetic Compatibility (EMC)
Installation Manual PSSuniversal
21262-EN-07 12
}Cables of the same group can be laid within the same cable duct.
}Cables from group 1 and group 2 should be laid in separate groups or in cable ducts
which are at least 10 cm apart.
}Cables from group 1 and group 3 should be laid in separate groups or in cable ducts
which are at least 50 cm apart.
}Data and signal lines should be laid as close as possible to an earthed surface.
Cabling to open air systems
}As far as possible use metal conduits. These should be electrically connected and
earthed.
}Ensure there is sufficient protection against lightning by using metal conduits earthed at
both ends, or concrete cable ducts with reinforcements connected across the joints.
3.2.3 Connecting the fieldbuses
Please note:
}SafetyNETp
See System Description PSS 4000
INFORMATION
To connect the available fieldbus systems, please refer to the operating
manual for the respective head module and the guidelines published by the
user group or manufacturer.
3.2.4 Equipotential bonding
Potential differences may occur if the PSSu system and its periphery devices are connec-
ted to different earth connections. Equalising currents can flow through cable shields that
are connected at either end and have different earth connections. These equalising cur-
rents can cause interference or destroy the cable shield. In order to avoid interference,
equipotential bonding cables must be installed. Please note:
}Select a low impedance equipotential bonding cable.
}Select the following as standard values for the cross section of the equipotential bond-
ing cables:
– 16 mm2 for equipotential bonding cable up to 200m in length
– 25 mm2 for equipotential bonding cable over 200m in length
}If the PSSu system and periphery devices are connected with shielded signal cables
which are earthed at either end, the impedance is calculated as follows:
– Impedance equipotential bonding cable = 10 % of shield impedance
}Use copper or galvanised steel equipotential bonding cable.
}Connect equipotential bonding cables to the earth bar over as wide a surface area as
possible.
}As short a distance as possible should be kept between the equipotential bonding cable
and signal cable.

Electromagnetic Compatibility (EMC)
Installation Manual PSSuniversal
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3.2.5 Screening
Interference currents must be diverted to cable shields via shield bars.
Please note:
}Connect the shields with low impedance to the shield bar or earth bar.
}Use cables with braided shield, with a minimum cover area of 80 %.
}When laying cables without equipotential bonding or using foil shields: Connect the
shield at one end.
}If possible, use metal or metallised plugs to connect cables for serial data transfer. Al-
ways refer to the regulations relating to the fieldbus systems.
}If the shield is not to be connected at the end of the cable, it must have no connection
to the connector housing.
}At the point where the cable enters the cabinet, connect the shield to the earth bar,
without making a break in the cable. Use metal cable clamps which cover the shield
over a wide surface area. Take the screen as far as the PSSuniversal, but do not lay it
on top of the PSSuniversal.
Digital inputs and outputs on the PSSu system do not need shielded cables. However, if the
connection cables have a shield, it should be connected at one end.
Analogue inputs and outputs plus the inputs and outputs on the counter modules should al-
ways be connected using shielded cables.
}On base modules with C-rail:
– Connect the shield to the terminals on the C-rail.
– Connect the C-rail with low impedance to the functional earth.
}On analogue modules and base modules without C-rail:
– Connect the shield as shown in the terminal configuration section of the configura-
tion data sheets.
– The module connects the shield to the functional earth via the mounting rail.
3.2.6 Suppression on inductive loads
Suppression should not be used to protect the digital semiconductor outputs.
Digital semiconductor outputs on the PSSuniversal do not need suppression. With FS out-
puts on the PSSuniversal, suppression can lead to errors on the on/off tests and test
pulses.
However, inductive loads that are not switched by the PSSuniversal should be wired with
suppression elements for EMC reasons.
3.2.7 Installing within an enclosure or wall-mounting
Care must be taken to avoid interference when installing the unit within an enclosure or
wall-mounting:
}Earth bars, earth conductors and the housing should be attached to metal parts in order
to divert any coupled interference on to large metal areas. For wall-mounting we recom-
mend: that the overall potential surfaces are made of steel.

Electromagnetic Compatibility (EMC)
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}For varnished or anodised metal parts you should use special contact plates or remove
the protective coating.
}Install an earth bar for the cable shields.
}The earth bar can also be used as the ground conductor bar.
}Connect the earth bar or earth conductor to the mounting plate over a wide surface
area and with low impedance. If the bar is to be used as the earth conductor, comply
with the latest regulations for earthing the bar.
3.2.8 Lighting in the control cabinet
Use low interference panel lighting for inside the control cabinet.
3.3 Testing the EMC-compliance of an installation
You can use the list below to check that the installation of the PSSu is EMC-compliant.
Check Action Done
Are there areas with a high
probability of interference?
(e.g. computers running,
process control areas, distri-
bution cabinets, cable cas-
ing, frequency converters,
hand-held radios etc.)
EMC protection in these areas should be
planned with particular care.
Are areas where computers
are running or areas such as
process control rooms suffi-
ciently shielded from electro-
magnetic coupling?
If necessary shield the whole area.
Does the cable layout take
into account the principles of
EMC compliance?
Some important points: Lay cables close to
earth, keep clear of other electrical equipment,
keep cables in ducts separate from other parts
of the installation, keep cables as short as pos-
sible.
Is the supply voltage free of
interference?
Supplies with interference voltages should be
fitted with a mains filter.
EMC characteristics of indi-
vidual units / all units once
installed?
Test under operating conditions, e.g. while
hand-held radios are in use, or HF frequency
generators are close by. Test static discharge
with operating personnel, test mutual interfer-
ence between units under different operating
conditions.
Earthed parts connected
correctly?
Most important are the connections to the
PSSu housing, racking bars, earth conductors
and earth bars; inactive metal parts should be
connected over a wide surface area and
earthed at a central point; with insulated metal:
Remove insulation or use special contact fix-
ings; protect the connection from corrosion;
connect the cabinet doors to the body of the
cabinet using earthing straps

Electromagnetic Compatibility (EMC)
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Check Action Done
Cable groups laid separ-
ately?
Separate cables into groups. Supply and signal
leads should be laid separately
Are the shields connected
correctly?
Use shielded cables for analogue and data
leads; use metallic plugs; connect cable shields
to shield bar at point of entry to cabinet; con-
nect cable shields over a wide surface area and
with low impedance
Equipotential bonding car-
ried out?
If the installation extends over a wide area: lay
equipotential bonding cable.
Are inductive loads
switched?
Inductive loads that are not switched by digital
outputs on the PSSu must be wired with sup-
pression elements.
24 VDC power supply? As regards safe separation, power supplies
must conform to EN 60950-1, 02.2011, section
2.3, EN 61558-1, 11/2006 or EN 50178, 10/97

Installing the PSSu system
Installation Manual PSSuniversal
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4 Installing the PSSu system
4.1 Modular structure
The PSSuniversal is a modular, programmable system for controlling plant and machinery.
The PSSuniversal Configurator/PSS 4000 system software is available for configuration.
The PSSuniversal Assistant software/Tool Suite PAS4000 provides support when selecting
components. A PSSuniversal type system consists of:
}One head module
}At least one supply voltage module, if the head module does not have an integrated
supply voltage
}Input/output modules for standard and failsafe applications
}End bracket to secure the system at the start
}Terminating plate with integrated bus terminating resistors and end bracket to secure
the system at the end
The head module:
}Connects the sensor/actuator level for standard applications with standard fieldbus sys-
tems (e.g. PROFIBUS-DP)
}Connects the sensor/actuator level for failsafe applications, e.g. with SafetyBUS p or
SafetyNETp
}Co-ordinates the entire process data traffic
}May have an integrated supply voltage for module supply and periphery supply
Supply voltage modules:
}Consist of an electronic module and a base module
}Are available for various functions
Input/output modules:
}Consist of an electronic module and a base module
}Are incorporated in a compact module
}Are available for a wide range of input/output functions
}Can be installed in any order
Base modules:
}Are carrier units for the supply voltage modules and input/output modules
}Are used to connect the field wiring
}Are available in the following connection types:
– Spring-loaded terminals or
– Screw terminals
Electronic modules:
}Are plugged into base modules.
}Determine the function of the supply voltage or input/output module
}Communicate with the head module via the module bus
Compact modules:
}Incorporate base module and electronic module in one housing

Installing the PSSu system
Installation Manual PSSuniversal
21262-EN-07 17
}Are available in the following connection types:
– Spring-loaded terminals
}Communicate with the head module via the module bus
End bracket Electronic module
(Grid width 2 x 12,6 mm)
Electronic module
(Grid width 1 x 12,6 mm)
Monting rail
(DIN EN 50022)
Base module
(Grid width 2 x 12,6 mm)
Base module
(Grid width 1 x 12,6 mm)
Compact module
(Grid width 1 x 30 mm)
Head module
(with integrated
suply voltage module)
End bracket
(integrated in
terminating plate)
Terminating plate
4.2 Module layout
}The first module on a PSSuniversal system is always a head module.
}If the head module does not have an integrated power supply, a supply voltage module
is connected to the right of the head module. The supply voltage module is used
– To provide the module supply (supply for the head module and the input/output
modules)
– To provide the periphery supply (supply for the sensors and actuators)
}Input/output modules for FS and ST applications may follow on to the right.
– The input/output modules may be installed in any order.
– Input/output modules for FS applications and ST applications may be combined as
required.

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– Base modules and electronic modules can be combined with compact modules at
will.
– However, if modules of the same function are combined into groups it makes things
clearer and simplifies the wiring.
– It is not possible to mix base modules with screw terminals and base modules with
spring-loaded terminals in one PSSuniversal system.
– The maximum number of input/output modules is determined through the defined
system limits.
– Input/output modules for FS applications cannot be used on head modules that do
not have an FS section.
}Additional supply voltage modules may be required in order to refresh the module sup-
ply or periphery supply.
}Supply groups require an additional voltage supply module at the start of each group.
The modules belonging to the supply group will then follow to the right.
}The final element in a PSSu system is always a terminating plate containing the termin-
ating resistors for the module bus.
}The system is attached to the mounting rail using fastening elements at the start and
end of the system. The following are available, depending on vibration and shock
stress:
– Plastic version (standard)
– Metal version (where there is increased stress)
Module layout:
Head module
End angle
(metal version
if necessary)
Supply voltage
(Supply voltage module
if necessary)
Input/output module
Electronic/base module
or
compact module
(with supply voltage modules for
potential isolation if necessary)
Terminating plate
with integrated
end angle
If necessary:
Additional metal
end angle
4.3 Connection levels
4.3.1 Connections on the base modules
The connections on the base modules are divided into connection levels and connection
columns. The connections have a two-digit number.

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}The first digit denotes a base module's connection column (e.g.: connection 23 is in the
second column).
}The second digit denotes a base module's connection level (e.g.: connection 23 is in
the third level).
The function of the base module connections depends on the electronic module.
4.3.1.1 Colour marking on the connection levels
The colour marking on the connection levels is a wiring aid. Various colour markers are
available for labelling. The colour markers can be used to label different supplies. This way
the connection levels remain clearly visible, even after wiring.
Example:
Head Module
2111
2212
2313
2414
Power Supply
2111
2212
2313
2414
PSSu E S 4DI
2111
2212
2313
2414
PSSu E F 2DO 2
2111
2212
2313
2414
PSSu E S 4AI U
2111
2212
2313
2414
PSSu E S 2DO 2
2111
2212
2313
2414
PSSu E S 4AO U
2111
2212
2313
2414
PSSu E F 4DI
2111
2212
2313
2414
PSSu E S 4DI
2111
2212
2313
2414
PSSu E F 4DI
Connection level 1
Connection level 2
Connection level 3
Connection level 4
[1] : + 24V DC Periphery Supply
[2] : 0 V DC Periphery Supply
[4] : Inputs/outputs
2111
2212
2313
2414
PSSu E F 4DI
2111
2212
2313
2414
PSSu E F 2DO 2
Digit. Output
Digital Input
[2]
2515
2616
2515
2616
[5] : Cable screening
Connection level 5
Connection level 6
Analog
[2] [5]
[5]
[3]
[4]
[4]
[1]
[1]
[3] : 0 V DC Analog
[3]
4.3.2 Connections on the compact modules
The connections on the compact modules are divided into terminal rows. Single or three-
row connectors with spring-loaded terminals can be plugged into the device's single-row
10-pin connector strip.
The function of the connections depends on the compact module.
}Terminal row 1
Connection of the inputs and outputs, periphery supply (24V and 0V).

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}Terminal row 2
All connections are linked; bridged to the 24V periphery supply connection from the
first connection level
}Terminal row 3
All connections are linked; bridged to the 0 V periphery supply connection from the first
connection level
Input/output modules can be installed in any order. However, for the connection diagram to
be consistent it makes sense to arrange input/output modules of the same type into groups.
Single-row connector
24 V
0 V
Inputs or
outputs
Terminal rows
1
2
3
4
5
6
7
9
8
10
1
Three-row connector
111 21
12 22
13 23
14 24
15 25
16 26
17 27
18 28
19 29
20 30
10
9
8
3
5
6
7
24 V
4
2
0 V
Inputs or
outputs
Terminal rows
1 2 3