WAGO 750-306, WAGO-I/O-SYSTEM 750, 750-806 Technical Description
Modular I/O System
DeviceNet
750-306, 750-806
Manual
Technical Description,
Installation and
Configuration
Supplement for the Manual 750-135
Version 2002-07-01
ii • General
Copyright ã 2002 by WAGO Kontakttechnik GmbH
All rights reserved.
WAGO Kontakttechnik GmbH
Hansastraße 27
D-32423 Minden
Phone: +49 (0) 571/8 87 – 0
Fax: +49 (0) 571/8 87 – 1 69
E-Mail: info@wago.com
Web: http://www.wago.com
Technical Support
Phone: +49 (0) 571/8 87 – 5 55
Fax: +49 (0) 571/8 87 – 85 55
E-Mail: support@wago.com
Every conceivable measure has been taken to ensure the correctness and completeness of this documentation. However, as errors can never be fully excluded we would appreciate any information or ideas at any time.
E-Mail: documentation@wago.com
We wish to point out that the software and hardware terms as well as the
trademarks of companies used and/or mentioned in the present manual are
generally trademark or patent protected.
WAGO-I/O-SYSTEM 750
DeviceNet
TABLE OF CONTENTS
1 Important Comments.................................................................................4
1.1 Legal Principles......................................................................................4
1.2 Symbols..................................................................................................5
1.3 Font Conventions ...................................................................................6
1.4 Number Notation....................................................................................6
1.5 Safety Notes ...........................................................................................7
1.6 Scope ......................................................................................................8
1.7 Abbreviation...........................................................................................8
2 The WAGO-I/O-SYSTEM 750 .................................................................9
2.1 System Description ................................................................................9
2.2 Technical Data......................................................................................10
2.3 Manufacturing Number........................................................................13
2.4 Storage, Consignment and Transport...................................................14
2.5 Mechanical Setup .................................................................................14
2.6 Power Supply .......................................................................................22
2.7 Grounding.............................................................................................33
2.8 Shielding (screening)............................................................................36
2.9 Assembly Guidelines / Norms .............................................................37
Table of Contents • iii
3 Fieldbus Coupler/Controller...................................................................38
3.1 Fieldbus Coupler 750-306....................................................................38
3.2 Fieldbus Controller 750-806 ................................................................61
4 I/O modules.............................................................................................105
5 DeviceNet.................................................................................................106
5.1 Description .........................................................................................106
5.2 Network Architecture.........................................................................107
5.3 Network Communication ...................................................................112
5.4 Module Characteristics.......................................................................113
5.5 Process data and Diagnostic Status ....................................................114
5.6 Configuration / Parametering with the Object Model........................116
6 Application in Explosive Environments...............................................139
6.1 Foreword ............................................................................................139
6.2 Protective Measures ...........................................................................139
6.3 Classification Meeting CENELEC and IEC ......................................139
6.4 Classifications Meeting the NEC 500 ................................................144
6.5 Identification ......................................................................................146
6.6 Installation Regulations......................................................................148
7 Glossary...................................................................................................150
8 Literature List ........................................................................................151
9 Index ........................................................................................................152
WAGO-I/O-SYSTEM 750
DeviceNet
4 • Important Comments
Legal Principles
1 Important Comments
To ensure fast installation and start-up of the units described in this manual,
we strongly recommend that the following information and explanations are
carefully read and abided by.
1.1 Legal Principles
1.1.1 Copyright
This manual is copyrighted, together with all figures and illustrations contained therein. Any use of this manual which infringes the copyright provisions stipulated herein, is not permitted. Reproduction, translation and electronic and photo-technical archiving and amendments require the written consent of WAGO Kontakttechnik GmbH. Non-observance will entail the right of
claims for damages.
WAGO Kontakttechnik GmbH reserves the right to perform modifications
allowed by technical progress. In case of grant of a patent or legal protection
of utility patents all rights are reserved by WAGO Kontakttechnik GmbH.
Products of other manufacturers are always named without referring to patent
rights. The existence of such rights can therefore not be ruled out.
1.1.2 Personnel Qualification
The use of the product detailed in this manual is exclusively geared to specialists having qualifications in PLC programming, electrical specialists or
persons instructed by electrical specialists who are also familiar with the valid
standards. WAGO Kontakttechnik GmbH declines all liability resulting from
improper action and damage to WAGO products and third party products due
to non-observance of the information contained in this manual.
1.1.3 Intended Use
For each individual application, the components supplied are to work with a
dedicated hardware and software configuration. Modifications are only permitted within the framework of the possibilities documented in the manuals.
All other changes to the hardware and/or software and the non-conforming use
of the components entail the exclusion of liability on part of WAGO Kontakttechnik GmbH.
Please direct any requirements pertaining to a modified and/or new hardware
or software configuration directly to WAGO Kontakttechnik GmbH.
WAGO-I/O-SYSTEM 750
DeviceNet
1.2 Symbols
Important Comments • 5
Symbols
Danger
Always abide by this information to protect persons from injury.
Warning
Always abide by this information to prevent damage to the device.
Attention
Marginal conditions must always be observed to ensure smooth operation.
ESD (Electrostatic Discharge)
Warning of damage to the components by electrostatic discharge. Observe the
precautionary measure for handling components at risk.
Note
Routines or advice for efficient use of the device and software optimization.
More information
References on additional literature, manuals, data sheets and INTERNET
pages
WAGO-I/O-SYSTEM 750
DeviceNet
6 • Important Comments
Font Conventions
1.3 Font Conventions
Italic
Italic
\
END
< >
Courier Program code is printed with the font Courier.
1.4 Number Notation
Names of path and files are marked italic
i.e.: C:\programs\WAGO-IO-CHECK
Menu items are marked as bold italic
i.e.: Save
A backslash between two names marks a sequence of
menu items
i.e.: File\New
Press buttons are marked as bold with small capitals
i.e.: ENTER
Keys are marked bold within angle brackets
i.e.: <F5>
i.e.: END_VAR
Number Code Example Note
Decimal 100 normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100'
Within ',
Nibble separated with dots
WAGO-I/O-SYSTEM 750
DeviceNet
1.5 Safety Notes
Attention
Switch off the system prior to working on bus modules!
In the event of deformed contacts, the module in question is to be replaced, as
its functionality can no longer be ensured on a long-term basis.
The components are not resistant against materials having seeping and insulating properties. Belonging to this group of materials is: e.g. aerosols, silicones, triglycerides (found in some hand creams).
If it cannot be ruled out that these materials appear in the component environment, then additional measures are to be taken:
- installation of the components into an appropriate housing
- handling of the components only with clean tools and materials.
Attention
Cleaning of soiled contacts may only be done with ethyl alcohol and leather
cloths. Thereby, the ESD information is to be regarded.
Important Comments • 7
Safety Notes
Do not use any contact spray, as in a worst-case scenario; the functioning of
the contact area can be impaired.
The WAGO-I/O-SYSTEM 750 and its components are an open system. It
must only be assembled in housings, cabinets or in electrical operation
rooms. Access must only be given via a key or tool to authorized qualified
personnel.
The relevant valid and applicable standards and guidelines concerning the
installation of switch boxes are to be observed.
ESD (Electrostatic Discharge)
The modules are equipped with electronic components that may be destroyed
by electrostatic discharge. When handling the modules, ensure that the environment (persons, workplace and packing) is well grounded. Avoid touching
conductive components, e.g. gold contacts.
WAGO-I/O-SYSTEM 750
DeviceNet
8 • Important Comments
Scope
1.6 Scope
Item no. Description
750-306 fieldbus Coupler DeviceNet; 125 – 500 kBaud
750-806 prog. Fieldbus Controller DeviceNet; 125 – 500 kBaud
Attention
This document is a supplement for the DeviceNet manual.
This manual describes the modular WAGO-I/O-SYSTEM 750 with the fieldbus Coupler for DeviceNet or with the programmable fieldbus Controller for
DeviceNet.
This extract does not contain:
The chapter 3 "I/O modules"
(Description of the field bus independent I/O modules).
1.7 Abbreviation
AI
AO
BC
CAL
CAN
DI
DIP
DO
EDS
I/O
ID
Idx
ISO/ OSI
M
MAC ID
MS
Analog Input
Analog Output
BusCoupler
CAN Application Layer
Controller Area Network
Digital Input
Dual In-line Package
Digital Output
Electronic Data Sheets
Input/Output
Identifier, Identification
Index
International Organization for Standardization / Open Systems Interconnection (model)
Master
Media Access Control Identifier (nodeaddress)
Module Status
NMT
NS
PFC
RO
RW
Network Management
Network Status
Programmable fieldbus Controller
Read Only
Read/Write
WAGO-I/O-SYSTEM 750
DeviceNet
2 The WAGO-I/O-SYSTEM 750
2.1 System Description
The WAGO-I/O-SYSTEM 750 is a modular, fieldbus independent I/O system.
It is comprised of a fieldbus coupler/controller (1) and up to 64 connected
fieldbus modules (2) for any kind of signal. Together, these make up the
fieldbus node. The end module (3) completes the node.
The WAGO-I/O-SYSTEM 750 • 9
System Description
Fig. 2-1: Fieldbus node g0xxx00x
Couplers / controllers for fieldbus systems such as PROFIBUS, INTERBUS,
ETHERNET TCP/IP, CAN (CANopen, DeviceNet, CAL), MODBUS, LON
and others are available.
The coupler / controller contains the fieldbus interface, electronics and a
power supply terminal. The fieldbus interface forms the physical interface to
the relevant fieldbus. The electronics process the data of the bus modules and
make it available for the fieldbus communication. The 24 V system supply and
the 24 V field supply are fed in via the integrated power supply terminal.
The fieldbus coupler communicates via the relevant fieldbus. The programmable fieldbus controller (PFC) enables the implementation of additional PLC
functions. Programming is done with the WAGO-I/O-PRO 32 in accordance
with IEC 61131-3.
Bus modules for diverse digital and analogue I/O functions as well as special
functions can be connected to the coupler / controller. The communication
between the coupler/controller and the bus modules is carried out via an internal bus.
The WAGO-I/O-SYSTEM 750 has a clear port level with LEDs for the status
indication, insertable mini WSB markers and pullout group marker carriers.
The 3-wire technology supplemented by a ground wire connection allows the
direct sensor/actuator wiring.
WAGO-I/O-SYSTEM 750
DeviceNet
10 • The WAGO-I/O-SYSTEM 750
Technical Data
2.2 Technical Data
Mechanic
Material Polycarbonate, Polyamide 6.6
Dimensions Coupler / Controller 51 mm x 65* mm x 100 mm
Dimensions I/O module, single 12 mm x 64* mm x 100 mm
Dimensions I/O module, double 24 mm x 64* mm x 100 mm
Installation on DIN 35 with interlock
modular by double featherkey-dovetail
Mounting position any position
Length of entire node
≤ 831 mm
Marking marking label type 247 and 248
paper marking label 8 x 47 mm
Wire range
Wire range CAGE CLAMP® Connection
0,08 mm² ... 2.5 mm²
AWG 28-14
8 – 9 mm Stripped length
Contacts
Power jumpers contacts blade/spring contact
self-cleaning
Current via power contacts
Voltage drop at I
max
max
10 A
< 1 V/64 modules
Data contacts slide contact, hard gold plated
1,5µ, self-cleaning
Climatic environmental conditions
Operating temperature 0 °C ... 55 °C
Storage temperature -20 °C ... +85 °C
Relative humidity 95 % without condensation
Resistance to harmful substances acc. to IEC 60068-2-42 and IEC 60068-2-43
Special conditions Ensure that additional measures for components are
taken, which are used in an environment involving:
– dust, caustic vapors or gasses
– ionization radiation.
Mechanical strength
Vibration resistance acc. to IEC 60068-2-6
Shock resistance acc. to IEC 60068-2-27
Free fall acc. to IEC 60068-2-32
≤ 1m (module in original packing)
* from upper edge of DIN 35 rail
WAGO-I/O-SYSTEM 750
DeviceNet
The WAGO-I/O-SYSTEM 750 • 11
Safe electrical isolation
Air and creepage distance acc. to IEC 60664-1
Degree of protection
Degree of protection IP 20
Electromagnetic compatibility*
Technical Data
Directive Test values Strength
class
Immunity to interference acc. to EN 50082-2 (96)
EN 61000-4-2 4kV/8kV (2/4) B
EN 61000-4-3 10V/m 80% AM (3) A
EN 61000-4-4 2kV (3/4) B
EN 61000-4-6 10V/m 80% AM (3) A
Emission of interference acc. to
EN 50081-2 (94)
EN 55011 30 dBµV/m (30m) A
37 dBµV/m
Emission of interference acc. to
EN 50081-1 (93)
EN 55022 30 dBµV/m (10m) B
37 dBµV/m
* Exception: 750-630, 750-631
Range of application
Required specification
emission of interference
Measuring
distance
Measuring
distance
Required specification
immunity to interference
Evaluation
criteria
Class
Class
Industrial areas EN 50081-2 : 1993 EN 50082-2 : 1996
Residential areas EN 50081-1 : 1993*) EN 50082-1 : 1992
*)
WAGO-I/O-SYSTEM 750
DeviceNet
The system meets the requirements on emission of interference in residential areas with
the fieldbus coupler/controller for:
ETHERNET
LonWorks
CANopen
DeviceNet
MODBUS
With a special permit, the system can also be implemented with other fieldbus couplers/controllers in residential areas (housing, commercial and business areas, small-scale
enterprises). The special permit can be obtained from an authority or inspection office. In
Germany, the Federal Office for Post and Telecommunications and its branch offices
issues the permit.
It is possible to use other field bus couplers / controllers under certain boundary conditions. Please contact WAGO Kontakttechnik GmbH.
750-342/-842
750-319/-819
750-337/-837
750-306/-806
750-312/-314/ -315/ -316
750-812/-814/ -815/ -816
12 • The WAGO-I/O-SYSTEM 750
Technical Data
Maximum power dissipation of the components
Bus modules 0.8 W / bus terminal (total power dissipation, sys-
Fieldbus coupler / controller 2.0 W / coupler / controller
Warning
The power dissipation of all installed components must not exceed the maximal conductible power of the housing (cabinet).
When dimensioning the housing, care is to be taken that even under high external temperatures, the temperature inside the housing does not exceed the
permissible ambient temperature of 55 °C.
tem/field)
Dimensions
Fig. 2-2: Dimensions g01xx05e
WAGO-I/O-SYSTEM 750
DeviceNet
2.3 Manufacturing Number
The production number is part of the lateral marking on the component.
Hansastr. 27
D-32423 Minden
The WAGO-I/O-SYSTEM 750 • 13
Manufacturing Number
ITEM-NO.:750-400
2DI 24V DC 3.0ms
2
0.08-2.5mm
24V DC
CL I DIV 2
AWG 28-14
55°C max ambient
Grp. A B C D
op temp code T4A
24246
LISTED 22ZA AND 22XM
0901--02----03
0V 24V DI1
II3G
KEMA 01ATEX1024 X
EEx nA II T4
Di2
PATENTS PENDING
Manufacturing Number
0
9
Calendar
week
1
0
-
Year Software
version
2
0
0
-
Hardware
version
Fig. 2-3: Manufacturing Number g01xx09e
The manufacturing number consists of the production week and year, the
software version (if available), the hardware version of the component, the
firmware loader (if available) and further internal information for
WAGO Kontakttechnik GmbH.
As of calendar week 43/2000, the production number is also printed on the
cover of the configuration and programming interface of the fieldbus coupler
or controller.
WAGO-I/O-SYSTEM 750
DeviceNet
14 • The WAGO-I/O-SYSTEM 750
Storage, Consignment and Transport
2.4 Storage, Consignment and Transport
Wherever possible, the components are to be stored in their original packaging. Likewise, the original packaging provides optimal protection during
transport.
When consigning or repacking the components, the contacts must not be
soiled or damaged. The components must be stored and transported in appropriate containers/packaging. Thereby, the ESD information is to be regarded.
Statically shielded transport bags with metal coatings are to be used for the
transport of open components for which soiling with amine, amide and silicone has been ruled out, e.g. 3M 1900E.
2.5 Mechanical Setup
2.5.1 Installation Position
Along with horizontal and vertical installation, all other installation positions
are allowed.
Attention
In the case of vertical assembly, an end stop has to be mounted as an additional safeguard against slipping.
WAGO item 249-117/002-000 End stop for DIN 35 rail, 10 mm wide
2.5.2 Total Expansion
The maximum total expansion of a node is calculated as follows:
Quantity Width Components
1 51 mm coupler / controller
64 12 mm bus modules
1 12 mm end stop
- inputs / outputs
- power supply modules
- etc.
sum 831 mm
Warning
The maximal total expansion of a node must not exceed 831 mm
WAGO-I/O-SYSTEM 750
DeviceNet
The WAGO-I/O-SYSTEM 750 • 15
Mechanical Setup
2.5.3 Assembly onto Carrier Rail
2.5.3.1 Carrier rail properties
All system components can be snapped directly onto a carrier rail in accordance with the European standard EN 50022 (DIN 35).
Warning
WAGO supplies standardized carrier rails that are optimal for use with the
I/O system. If other carrier rails are used, then a technical inspection and approval of the rail by WAGO Kontakttechnik GmbH must take place.
Carrier rails have different mechanical and electrical properties. For the optimal system setup on a carrier rail, certain marginal terms must be observed:
• The material must be non-corrosive.
• Most components have a contact to the carrier rail to ground electro-magnetic disturbances.
In order to avoid corrosion, this tin-plated carrier rail contact must not form a galvanic cell
with the material of the carrier rail which generates a differential voltage above 0.5 V (saline
solution of 0.3% at 20°C) .
• The carrier rail must optimally support the EMC measures integrated into the system and the
shielding of the bus module connections.
• A sufficiently stable carrier rail should be selected and, if necessary, several assembly points
(every 20 cm) should be used in order to prevent bending and twisting (torsion).
• The geometry of the carrier rail must not be altered in order to secure the safe hold of the
components. In particular, when shortening or mounting the carrier rail, it must not be
crushed or bent.
• The base of the components extends into the profile of the carrier rail. For carrier rails with a
height of 7.5 mm, assembly points (screws) are to be riveted under the node in the carrier rail
(slotted head captive screws or blind rivets).
WAGO-I/O-SYSTEM 750
DeviceNet
16 • The WAGO-I/O-SYSTEM 750
Mechanical Setup
2.5.3.2 WAGO DIN Rail
WAGO carrier rails meet the electrical and mechanical requirements.
Item Number Description
210-113 /-112 35 x 7.5; 1 mm; steel yellow chromated; slotted/unslotted
210-114 /-197 35 x 15; 1.5 mm; steel yellow chromated; slotted/unslotted
210-118 35 x 15; 2.3 mm; steel yellow chromated; unslotted
210-198 35 x 15; 2.3 mm; copper; unslotted
210-196 35 x 7.5; 1 mm; aluminum; unslotted
2.5.4 Spacing
The spacing between adjacent components, cable conduits, casing and frame
sides must be maintained for the complete field bus node.
Fig. 2-4: Spacing g01xx13 x
The spacing creates room for heat transfer, installation or wiring. The spacing
to cable conduits also prevents conducted electromagnetic interferences from
influencing the operation.
WAGO-I/O-SYSTEM 750
DeviceNet
The WAGO-I/O-SYSTEM 750 • 17
2.5.5 Plugging and Removal of the Components
Warning
Before work is done on the components, the voltage supply must be turned
off.
In order to safeguard the coupler/controller from jamming, it should be fixed
onto the carrier rail with the To do so, push on the upper groove of the locking disc using a screwdriver.
To pull out the fieldbus coupler/controller, release the locking disc by pressing
on the bottom groove with a screwdriver and then pulling the orange colored
unlocking lug.
Mechanical Setup
Fig. 2-5: Coupler/Controller and unlocking lug g01xx12e
It is also possible to release an individual I/O module from the unit by pulling
an unlocking lug.
Fig. 2-6: removing bus terminal p0xxx01x
Danger
Ensure that an interruption of the PE will not result in a condition which
could endanger a person or equipment!
For planning the ring feeding of the ground wire, please see chapter 2.6.3.
WAGO-I/O-SYSTEM 750
DeviceNet
18 • The WAGO-I/O-SYSTEM 750
Mechanical Setup
2.5.6 Assembly Sequence
All system components can be snapped directly on a carrier rail in accordance
with the European standard EN 50022 (DIN 35).
The reliable positioning and connection is made using a tongue and groove
system. Due to the automatic locking, the individual components are securely
seated on the rail after installing.
Starting with the coupler/controller, the bus modules are assembled adjacent to
each other according to the project planning. Errors in the planning of the node
in terms of the potential groups (connection via the power contacts) are recognized, as the bus modules with power contacts (male contacts) cannot be
linked to bus modules with fewer power contacts.
Attention
Always link the bus modules with the coupler / controller, always plug from
above.
Warning
Never plug bus modules from the direction of the end terminal. A ground
wire power contact, which is inserted into a terminal without contacts, e.g. a
4-channel digital input module, has a decreased air and creepage distance to
the neighboring contact in the example DI4.
Always terminate the fieldbus node with an end module (750-600).
WAGO-I/O-SYSTEM 750
DeviceNet
2.5.7 Internal Bus / Data Contacts
Communication between the coupler/controller and the bus modules as well as
the system supply of the bus modules is carried out via the internal bus. It is
comprised of 6 data contacts, which are available as self-cleaning gold spring
contacts.
Fig. 2-7: Data contacts p0xxx07x
Warning
Do not connect the I/O module to gold spring contacts in order to avoid soiling or scratches!
The WAGO-I/O-SYSTEM 750 • 19
Mechanical Setup
ESD (Electrostatic Discharge)
The modules are equipped with electronic components that may be destroyed
by electrostatic discharge. When handling the modules, ensure that the environment (persons, workplace and packing) is well grounded. Avoid touching
conductive components, e.g. gold contacts.
WAGO-I/O-SYSTEM 750
DeviceNet
20 • The WAGO-I/O-SYSTEM 750
Mechanical Setup
2.5.8 Power Contacts
Self-cleaning power contacts , are situated on the side of the components
which further conduct the supply voltage for the field side. These contacts
come as touchproof spring contacts on the right side of the coupler/controller
and the bus module. As fitting counterparts the module has male contacts on
the left side.
Danger
The power contacts are sharp-edged. Handle the module carefully to prevent
injury.
Attention
Please take into consideration that some bus modules have no or only a few
power jumper contacts. The design of some modules does not allow them to
be physically assembled in rows, as the grooves for the male contacts are
closed at the top.
Fig. 2-8: Example for the arrangement of power contacts g0xxx05e
Recommendation
With the WAGO ProServe® Software smartDESIGNER, the assembly of a
fieldbus node can be configured. The configuration can be tested via the integrated plausibility check.
WAGO-I/O-SYSTEM 750
DeviceNet
2.5.9 Wire connection
All components have CAGE CLAMP® connections.
The WAGO CAGE CLAMP® connection is appropriate for solid, stranded
and fine–stranded conductors. Each clamping unit accommodates one conductor.
The WAGO-I/O-SYSTEM 750 • 21
Mechanical Setup
Fig. 2-9: CAGE CLAMP® Connection g0xxx08x
The operating tool is inserted into the opening above the connection. This
opens the CAGE CLAMP®. Subsequently the conductor can be inserted into
the opening. After removing the operating tool, the conductor is safely
clamped.
More than one conductor per connection is not permissible. If several conductors have to be laid at a connection, then they should be laid in off-course
wiring; e.g. together with WAGO transfer terminals.
Attention
If it is unavoidable to jointly connect 2 conductors, then a ferrule must be
used.
Ferrule:
Length 8 mm
Nominal cross section
max.
1 mm2 for 2 conductors with 0.5 mm
2
each
WAGO Product 216-103
or products with comparable properties
WAGO-I/O-SYSTEM 750
DeviceNet
22 • The WAGO-I/O-SYSTEM 750
Power Supply
2.6 Power Supply
2.6.1 Isolation
Within the fieldbus node, there are three electrically isolated potentials.
• Operational voltage for the fieldbus interface.
• Electronics of the couplers / controllers and the bus modules (internal bus).
• All bus modules have an electrical isolation between the electronics (internal bus, logic) and
the field electronics. Some analogue input modules have each channel electrically isolated,
please see catalogue.
Fig. 2-10: Isolation g0xxx01e
Attention
The ground wire connection must be existent in each group. In order that all
protective conductor functions are maintained under all circumstances, it is
sensible to lay the connection at the beginning and end of a potential group.
(ring format, please see chapter "2.7.3"). Thus, if a bus module comes loose
from a composite during servicing, then the protective conductor connection
is still guaranteed for all connected field devices.
When using a joint power supply unit for the 24 V system supply and the
24 V field supply, the electrical isolation between the internal bus and the
field level is disregarded for the potential group.
WAGO-I/O-SYSTEM 750
DeviceNet
2.6.2 System Supply
2.6.2.1 Connection
The WAGO-I/O-SYSTEM 750 requires a 24 V direct current system supply
(-15% or +20 %). The power supply is provided via the coupler / controller
and, if necessary, in addition via the internal system supply modules
(750-613). The voltage supply is reverse voltage protected.
The WAGO-I/O-SYSTEM 750 • 23
Power Supply
Fig. 2-11: System Supply g0xxx02e
The direct current supplies all internal system components, e.g. coupler/controller electronics, fieldbus interface and bus modules via the internal
bus (5 V system voltage). The 5 V system voltage is electrically connected to
the 24 V system supply.
Fig. 2-12: System Voltage g0xxx06e
Attention
Resetting the system by switching on and off the system supply, must take
place simultaneously for all supply modules (coupler / controller and
750-613).
WAGO-I/O-SYSTEM 750
DeviceNet
24 • The WAGO-I/O-SYSTEM 750
Power Supply
2.6.2.2 Alignment
Recommendation
A stable network supply cannot be taken for granted always and everywhere.
Therefore, regulated power supply units should be used in order to guarantee
the quality of the supply voltage.
The supply capacity of the coupler/controller or the internal system supply
module (750-613) can be taken from the technical data of the components.
Internal current consumption*)
Residual current for bus terminals*)
*) cf. catalogue W3 Volume 3, manuals or Internet
Example
Current consumption via system voltage:
5 V for electronics of the bus modules and coupler /
controller
Available current for the bus modules. Provided by
the bus power supply unit. See coupler / controller
and internal system supply module (750-613)
Coupler 750-301:
internal current consumption:350 mA at 5V
residual current for
bus modules: 1650 mA at 5V
sum I(5V) ges: 2000 mA at 5V
The internal current consumption is indicated in the technical data for each bus
terminal. In order to determine the overall requirement, add together the values of all bus modules in the node.
Attention
If the sum of the internal current consumption exceeds the residual current for
bus modules, then an internal system supply module (750-613) must be
placed before the module where the permissible residual current was exceeded.
Example:
A node with a PROFIBUS Coupler 750-333 consists of 20 relay modules (750-517) and 20 digital input modules (750-405).
Current consumption:
20*105 mA = 2100 mA
10* 2 mA = 20 mA
Sum 2120 mA
The coupler can provide 1800 mA for the bus modules. Consequently,
an internal system supply module (750-613), e.g. in the middle of the
node, should be planned.
Recommendation
With the WAGO ProServe® Software smartDESIGNER, the assembly of a
fieldbus node can be configured. The configuration can be tested via the integrated plausibility check.
WAGO-I/O-SYSTEM 750
DeviceNet
The WAGO-I/O-SYSTEM 750 • 25
Power Supply
The maximum input current of the 24 V system supply amounts to 500 mA.
The exact electrical consumption (I
) can be determined with the following
(24 V)
formulas:
Coupler/Controller
I(5 V) ges. = Sum of all current consumptions of the connected bus modules
+ internal current consumption coupler / controller
750-613
I(5 V) ges. = Sum of all current consumptions of the connected bus modules
Input current I(24 V) =
5 V / 24 V * I(5 V) ges./ η
η = 0.87 (at nominal load)
Note
If the electrical consumption of the power supply point for the 24 V-system
supply exceeds 500 mA, then the cause may be an improperly aligned node
or a defect.
During the test, all outputs, in particular those of the relay modules, must be
active.
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26 • The WAGO-I/O-SYSTEM 750
Power Supply
2.6.3 Field Supply
2.6.3.1 Connection
Sensors and actuators can be directly connected to the relevant channel of the
bus module in 1-/4 conductor connection technology. The bus module supplies
power to the sensors and actuators. The input and output drivers of some bus
modules require the field side supply voltage.
The coupler/controller provides field side power (DC 24V). Power supply
modules are available for other potentials, e.g. AC 230 V. Likewise, with the
aid of the power supply modules, various potentials can be set up. The connections are linked in pairs with a power contact.
Fig. 2-13: Field Supply (Sensor / Actuator) g0xxx03e
The supply voltage for the field side is automatically passed on via the power
jumper contacts when assembling the bus modules .
The current load of the power contacts must not exceed 10 A on a continual
basis. The current load capacity between two connection terminals is identical
to the load capacity of the connection wires.
By setting an additional power supply module, the field supply via the power
contacts is disrupted. From there a new power supply occurs which also contains a potential alternation.
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2.6.3.2 Fusing
The WAGO-I/O-SYSTEM 750 • 27
Power Supply
Attention
Some bus modules have no or very few power contacts (depends on the I/O
function). Due to this, the passing on of the relevant potential is disrupted. If
a field supply is required for subsequent bus modules, then a power supply
module must be used.
Note the data sheets of the bus modules.
In the case of a node setup with different potentials, e.g. the alteration from
DC 24 V to AC 230V, a spacer module should be used. The optical separation of the potentials acts as a warning to heed caution in the case of wiring
and maintenance works. Thus, the results of wiring errors can be prevented.
Internal fusing of the field supply is possible for various field voltages via an
appropriate power supply module.
750-601 24 V DC, Supply / Fuse
750-609 230 V AC, Supply / Fuse
750-615 120 V AC, Supply / Fuse
750-610 24 V DC, Supply / Fuse / Diagnosis
750-611 230 V AC, Supply / Fuse / Diagnosis
Fig. 2-14: Supply module with fuse carrier (Example 750-610) g0xxx09x
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28 • The WAGO-I/O-SYSTEM 750
Power Supply
Warning
In the case of power supply modules with fuse holders, only fuses with a
maximal dissipation of 1.6 W (IEC 127) must be used.
For UL approved systems only use UL approved fuses.
In order to insert or change a fuse, or to switch off the voltage in succeeding
bus modules, the fuse holder may be pulled out. In order to do this, use a
screwdriver for example, to reach into one of the slits (one on both sides) and
pull out the holder.
Fig. 2-15: Removing the fuse carrier p0xxx05x
Lifting the cover to the side opens the fuse carrier.
Fig. 2-16: Opening the fuse carrier p0xxx03x
Fig. 2-17: Change fuse p0xxx04x
After changing the fuse, the fuse carrier is pushed back into its original position.
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The WAGO-I/O-SYSTEM 750 • 29
Power Supply
Alternatively, fusing can be done externally. The fuse modules of the WAGO
series 281 and 282 are suitable for this purpose.
Fig. 2-18: Fuse modules for automotive fuses, Series 282 pf66800x
Fig. 2-19: Fuse modules with pivotable fuse carrier, Series 281 pe61100x
Fig. 2-20: Fuse modules, Series 282 pf12400x
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30 • The WAGO-I/O-SYSTEM 750
Power Supply
2.6.4 Supplementary power supply regulations
The WAGO-I/O-SYSTEM 750 can also be used in shipbuilding or offshore
and onshore areas of work (e.g. working platforms, loading plants). This is
demonstrated by complying with the standards of influential classification
companies such as Germanischer Lloyd and Lloyds Register.
Filter modules for 24-volt supply are required for the certified operation of the
system.
Item No. Name Description
750-626 Supply filter Filter module for system supply and field supply (24 V,
0 V), i.e. for field bus coupler / controller and bus power
supply (750-613)
750-624 Supply filter Filter module for the 24 V- field supply
(750-602, 750-601, 750-610)
Therefore, the following power supply concept must be absolutely complied
with.
Fig. 2-21: Power supply concept g01xx11e
Note
Another potential power terminal 750-601/602/610 must only be used behind
the filter terminal 750-626 if the protective earth conductor is needed on the
lower power contact or if a fuse protection is required.
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