WAGO 750-341 User guide

Modular I/O-System
ETHERNET TCP/IP
750-341
Manual
Technical description, installation and configuration
Version 1.0.0
ii • General
Copyright © 2004 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.
This product includes software developed by the University of California, Berkley and ist contributors.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Table of Contents • iii
TABLE OF CONTENTS
1 Important Comments .................................................................................1
1.1 Legal Principles........................................................................................1
1.2 Symbols....................................................................................................2
1.3 Font Conventions .....................................................................................3
1.4 Number Notation......................................................................................3
1.5 Safety Notes .............................................................................................4
1.6 Scope ........................................................................................................5
1.7 Important Comments for Starting up........................................................5
1.8 Abbreviation.............................................................................................5
2 The WAGO-I/O-SYSTEM 750.................................................................. 6
2.1 System Description...................................................................................6
2.2 Technical Data.......................................................................................... 7
2.3 Manufacturing Number .......................................................................... 10
2.4 Component Update.................................................................................11
2.5 Storage, Assembly and Transport ..........................................................12
2.6 Mechanical Setup ................................................................................... 12
2.7 Power Supply .........................................................................................20
2.8 Grounding............................................................................................... 31
2.9 Shielding (Screening).............................................................................34
2.10 Assembly Guidelines / Standards........................................................... 35
3 Fieldbus Coupler....................................................................................... 36
3.1 Fieldbus Coupler 750-341......................................................................36
4 I/O Modules ...............................................................................................91
4.1 General ...................................................................................................91
4.2 Digital Input Modules ............................................................................91
4.3 Digital Output Modules..........................................................................93
4.4 Analog Intput Modules........................................................................... 94
4.5 Analog Output Modules ......................................................................... 95
4.6 Special Modules ..................................................................................... 95
4.7 System Modules .....................................................................................96
5 ETHERNET...............................................................................................97
5.1 General ................................................................................................... 97
5.2 Network Architecture – Principles and Regulations..............................98
5.3 Network Communication .....................................................................106
6 MODBUS Functions ...............................................................................130
6.1 General ................................................................................................. 130
6.2 Use of the MODBUS Functions........................................................... 132
6.3 Description of the MODBUS Functions ..............................................133
6.4 MODBUS Register Mapping ............................................................... 145
6.5 Internal Variables ................................................................................. 146
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP
iv • Table of Contents
7 Ethernet/IP (Ethernet/Industrial Protocol)..........................................157
7.1 General ................................................................................................. 157
7.2 Characteristics of the Ethernet/IP Protocol Software........................... 158
7.3 Object model ........................................................................................ 159
8 Application examples.............................................................................. 173
8.1 Test of MODBUS protocol and fieldbus nodes ...................................173
8.2 Visualization and control using SCADA software...............................173
9 Use in Hazardous Environments ...........................................................176
9.1 Foreword ..............................................................................................176
9.2 Protective measures.............................................................................. 176
9.3 Classification meeting CENELEC and IEC......................................... 176
9.4 Classifications meeting the NEC 500................................................... 180
9.5 Identification ........................................................................................182
9.6 Installation regulations ......................................................................... 184
10 Glossary....................................................................................................186
11 Literature List .........................................................................................199
12 Index ......................................................................................................... 200
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Important Comments • 1 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 non­conforming 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 ETHERNET TCP/IP
2 • Important Comments Symbols
1.2 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
ETHERNET TCP/IP
Important Comments • 3 Font Conventions
1.3 Font Conventions
Italic
Italic
\
END
< >
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>
Program code is printed with the font Courier. 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 ETHERNET TCP/IP
4 • Important Comments Safety Notes
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 enclosure
- 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.
Do not use any contact spray. The spray may impair the functioning of the contact area.
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
ETHERNET TCP/IP

Important Comments • 5 Scope

1.6 Scope
This manual describes the field bus independent WAGO-I/O-SYSTEM 750 with the fieldbus coupler for ETHERNET 10/100 MBit/s.
Item.-No. Description
750-341 Fieldbus Coupler EtherNet 10/100 MBit/s
1.7 Important Comments for Starting up
Attention
For the start-up of the coupler 750-341 important notes are to be considered, because it strongly differentiates in some points of starting up the cooupler 750-342. Read for this the chapter: 3.1.6 “Starting up ETHERNET TCP/IP fieldbus nodes“.
1.8 Abbreviation
AI AO DI DO I/O ID
Analog Input Analog Output Digital Input Digital Output Input/Output Identifier
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP

6 The WAGO-I/O-SYSTEM 750 System Description

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 type of signal. Together, these make up the fieldbus node. The end module (3) completes the node.
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 analog 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 status indication, insertable mini WSB markers and pullout group marker carriers. The 3-wire technology supplemented by a ground wire connection allows for direct sensor/actuator wiring.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

The WAGO-I/O-SYSTEM 750 • 7 Technical Data

2.2 Technical Data
Mechanic
Material Polycarbonate, Polyamide 6.6
Dimensions
- Coupler / Controller
- I/O module, single
- I/O module, double
- 51 mm x 65* mm x 100 mm
- 12 mm x 64* mm x 100 mm
- 24 mm x 64* mm x 100 mm
* from upper edge of DIN 35 rail
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
< 1 V/64 modules
max
10 A
max
Data contacts slide contact, hard gold plated
1,5µm, self-cleaning
Climatic environmental conditions
Operating temperature 0 °C ... 55 °C
Storage temperature -20 °C ... +85 °C
Relative humidity 5% to 95 % without condensation
Resistance to harmful substances acc. To IEC 60068-2-42 and IEC 60068-2-43
Maximum pollutant concentration at relative humidity < 75%
25 ppm
SO
2
H
S 10 ppm
2
Special conditions Ensure that additional measures for components are
taken, which are used in an environment involving: – dust, caustic vapors or gasses – ionization radiation.
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP
8 The WAGO-I/O-SYSTEM 750 Technical Data
Mechanical strength
Vibration resistance acc. to IEC 60068-2-6
Comment to the vibration restistance: a) Type of oscillation: sweep with a rate of change of 1 octave per minute 10 Hz f < 57 Hz, const. Amplitude 0,075 mm 57 Hz f < 150 Hz, const. Acceleration 1 g b) Period of oscillation: 10 sweep per axis in each of the 3 vertical axes
Shock resistance acc. to IEC 60068-2-27
Comment to the shock restistance: a) Type of impulse: half sinusoidal b) Intensity of impulse: 15 g peak value, 11 ms maintenance time c) Route of impulse: 3 impulses in each pos. And neg. direction of the 3 vertical axes of the test object, this means 18 impulses in all
Free fall acc. to IEC 60068-2-32
1m (module in original packing)
Safe electrical isolation
Air and creepage distance acc. to IEC 60664-1
Degree of pollution
2
acc. To IEC 61131-2
Degree of protection
Degree of protection IP 20
Electromagnetic compatibility*
Directive Test values Strength class Evaluation criteria
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)
Measuring distance
Class
EN 55011 30 dBµV/m (30m) A
37 dBµV/m
Emission of interference acc. to EN 50081-1 (93)
Measuring distance
Class
EN 55022 30 dBµV/m (10m) B
37 dBµV/m
* Exception: 750-630, 750-631
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
The WAGO-I/O-SYSTEM 750 • 9 Technical Data
Range of application
Industrial areas EN 50081-2 : 1993 EN 50082-2 : 1996
Residential areas EN 50081-1 : 1993*) EN 50082-1 : 1992
*)
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, small­scale 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.
Required specification emission of interference
750-342/-841/-842
750-319/-819
750-337/-837
750-306/-806
750-312/-314/ -315/ -316 750-812/-814/ -815/ -816
Required specification immunity to interference
Maximum power dissipation of the components
Bus modules 0.8 W / bus terminal (total power dissipation,
system/field)
Fieldbus coupler / controller 2.0 W / coupler / controller
Warning
The power dissipation of all installed components must not exceed the maximum 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.
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP
10 The WAGO-I/O-SYSTEM 750 Manufacturing Number
Dimensions
02
01
35
A
B
24V 0V
+
-
A
C
B
D
+
A
C
D
A
C
B
B
D
A
C
D
C
B
D
100
-
51
65
Side view
Fig. 2-2: Dimensions g01xx05 e
2.3 Manufacturing Number
The manufacturing number indicates the delivery status directly after production. This number is part of the lateral marking on the component. In addition, starting from calender week 43/2000 the manufacturing number is also printed on the cover of the configuration and programming interface of the fieldbus coupler or controller.
12
24
Dimensions in mm
64
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

The WAGO-I/O-SYSTEM 750 • 11 Component Update

PROFIBUS
ITEM-NO.:750-333
ITEM-NO.:750-333
PROFIBUS DP 12 MBd /DPV1
Hansastr. 27
Hansastr. 27
GL
D-32423 Minden
D-32423 Minden
24V DC
24V DC
AWG 28-14
AWG 28-14
55°C max ambient
55°C max ambient
72072
72072
DS
NO
SW
HW
3
0
version
FWL
2
0
0
0
Hardware
LISTED 22ZA AND 22XM
LISTED 22ZA AND 22XM
0103000203-B000000
750-333
WAGO - I/O - SYSTEM
01030002 03-B 060606 72072
Calendar
week
Fig. 2-3: Example: Manufacturing Number of a PROFIBUS fieldbus coupler 750-333
0103000203-B060606
Manufacturing Number
0
1
0
Year Software
PROFIBUS DP 12 MBd /DPV1
-
+
Power Supply
Power Supply Field
II3GD
II3GD DEMKO 02 ATEX132273 X
DEMKO 02 ATEX132273 X EEx nA II T4
EEx nA II T4
3
-B060606
version
Power Supply Electronic
Electronic
PATENTS PENDING
PATENTS PENDING
Firmware Loader
24 V 0V
0V
version
Internal
Number
g01xx15e
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.
2.4 Component Update
For the case of an Update of one component, the lateral marking on each component contains a prepared matrix.
This matrix makes columns available for altogether three updates to the entry of the current update data, like production order number (NO; starting from calendar week 13/2004), update date (DS), software version (SW), hardware version (HW) and the firmware loader version (FWL, if available).
Update Matrix
Current Version data for: 1. Update 2. Update 3. Update
Production Order Number
Datestamp Software index Hardware index Firmware loader
index
If the update of a component took place, the current version data are registered into the columns of the matrix.
Additionally with the update of a fieldbus coupler or controller also the cover of the configuration and programming interface of the coupler or controller is printed on with the current manufacturing and production order number.
NO
DS SW HW FWL
<- Only starting from
Calendar week 13/2004
<- Only for coupler/controller
The original manufacturing data on the housing of the component remain thereby.
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP

12 The WAGO-I/O-SYSTEM 750 Storage, Assembly and Transport

2.5 Storage, Assembly and Transport
Wherever possible, the components are to be stored in their original packaging. Likewise, the original packaging provides optimal protection during transport.
When assembling 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.
2.6 Mechanical Setup
2.6.1 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 249-116 End stop for DIN 35 rail, 6 mm wide WAGO item 249-117 End stop for DIN 35 rail, 10 mm wide
2.6.2 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
- inputs / outputs
- power supply modules
- etc.
1 12 mm end module
sum 831 mm
Warning
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
The maximal total expansion of a node must not exceed 831 mm
The WAGO-I/O-SYSTEM 750 • 13 Mechanical Setup

2.6.3 Assembly onto Carrier Rail

2.6.3.1 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 should take place.
Carrier rails have different mechanical and electrical properties. For the optimal system setup on a carrier rail, certain guidelines 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 mounting 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 I/O components extends into the profile of the carrier rail. For carrier rails with a height of 7.5 mm, mounting points are to be riveted under the node in the carrier rail (slotted head captive screws or blind rivets).
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP
14 The WAGO-I/O-SYSTEM 750 Mechanical Setup
2.6.3.2 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
2.6.4 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 g01xx13x
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
ETHERNET TCP/IP
The WAGO-I/O-SYSTEM 750 • 15 Mechanical Setup

2.6.5 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 locking disc 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.
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 ETHERNET TCP/IP
16 The WAGO-I/O-SYSTEM 750 Mechanical Setup
2.6.6 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, and 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
ETHERNET TCP/IP
The WAGO-I/O-SYSTEM 750 • 17 Mechanical Setup

2.6.7 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 touch the gold spring contacts on the I/O modules in order to avoid soiling or scratching!
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 ETHERNET TCP/IP
18 The WAGO-I/O-SYSTEM 750 Mechanical Setup
2.6.8 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 accuracy check.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
The WAGO-I/O-SYSTEM 750 • 19 Mechanical Setup
2.6.9 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.
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 made at one connection point, then they should be made away from the connection point using WAGO Terminal Blocks. The terminal blocks may be jumpered together and a single wire brought back to the I/O module connection point.
Attention If it is unavoidable to jointly connect 2 conductors, then a ferrule must be used to join the wires together. Ferrule: Length 8 mm Nominal cross section
1 mm2 for 2 conductors with 0.5 mm2
max.
each WAGO Product 216-103 or products with comparable properties
WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP
20 The WAGO-I/O-SYSTEM 750 Power Supply
2.7 Power Supply
2.7.1 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 analog input modules have each channel electrically isolated, please see catalog.
Fig. 2-10: Isolation g0xxx01e
Attention The ground wire connection must be present in each group. In order that all protective conductor functions are maintained under all circumstances, it is recommended that a ground wire be connected at the beginning and end of a potential group. (ring format, please see chapter "2.8.3"). 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 eliminated for the potential group.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
The WAGO-I/O-SYSTEM 750 • 21 Power Supply
2.7.2 System Supply
2.7.2.1 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.
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).
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2.7.2.2 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 W4 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)
: 2000 mA at 5V
total
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 10 digital input modules (750-405).
Current consumption: 20* 90 mA = 1800 mA 10* 2 mA = 20 mA Sum 1820 mA
The coupler can provide 1650 mA for the bus modules. Consequently, an internal system supply module (750-613), e.g. in the middle of the node, should be added.
Recommendation With the WAGO ProServe® Software smartDESIGNER, the assembly of a fieldbus node can be configured. The configuration can be tested via the integrated accuracy check.
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The WAGO-I/O-SYSTEM 750 • 23 Power Supply
The maximum input current of the 24 V system supply is 500 mA. The exact electrical consumption (I
Coupler/Controller
) can be determined with the following formulas:
(24 V)
I(5 V)
750-613
I(5 V)
= Sum of all the internal current consumption of the connected
total
bus modules + internal current consumption coupler / controller
= Sum of all the internal current consumption of the connected
total
bus modules
Input current I(24 V) =
5 V / 24 V * I(5 V)
η = 0.87 (at nominal load)
total
/ η
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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2.7.3 Field Supply
2.7.3.1 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 to the next module 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 inserting an additional power supply module, the field supply via the power contacts is disrupted. From there a new power supply occurs which may also contain a new voltage potential.
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Attention Some bus modules have no or very few power contacts (depending on the I/O function). Due to this, the passing through 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.
2.7.3.2 Fusing
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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Warning In the case of power supply modules with fuse holders, only fuses with a maximum 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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