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

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

1.1.1Copyright

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.

1.1.2Personnel 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.

1.1.3Intended 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

END

< >

Courier

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

1.4 Number Notation

Number Code	Example	Note
Decimal	100	normal notation

Hexadecimal	0x64	C notation

Binary	'100'	Within ',
	'0110.0100'	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

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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	Analog Input
AO	Analog Output
DI	Digital Input
DO	Digital Output
I/O	Input/Output
ID	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.

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

2.2 Technical Data

	Mechanic
	Material	Polycarbonate, Polyamide 6.6

	Dimensions
	- Coupler / Controller	- 51 mm x 65* mm x 100 mm
	- I/O module, single	- 12 mm x 64* mm x 100 mm
	- I/O module, double	- 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 contactsmax	10 A
	Voltage drop at Imax	< 1 V/64 modules
	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	SO2 ≤ 25 ppm
	relative humidity < 75%	H2S ≤ 10 ppm
	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

acc. To IEC 61131-2

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)

EN 61000-4-3

10V/m 80% AM

(3)

EN 61000-4-4

2kV

(3/4)

EN 61000-4-6

10V/m 80% AM

(3)

Emission of interference acc. to

Measuring

Class

EN 50081-2 (94)

distance

EN 55011

30 dBµV/m

(30m)

37 dBµV/m

Emission of interference acc. to

Measuring

Class

EN 50081-1 (93)

distance

EN 55022

30 dBµV/m

(10m)

37dBµV/m * Exception: 750-630, 750-631

WAGO-I/O-SYSTEM 750

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			The WAGO-I/O-SYSTEM 750		• 9
				Technical Data


Range of	Required specification			Required specification
application	emission of interference			immunity to interference
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 750-342/-841/-842 LonWorks 750-319/-819 CANopen 750-337/-837 DeviceNet 750-306/-806

MODBUS 750-312/-314/ -315/ -316 750-812/-814/ -815/ -816

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.

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

01	02
A		A	A	A	A
	C	C	C	C	C
B		B	B	B	B
	D	D	D	D	D

24V 0V

+ +

<![if ! IE]>

<![endif]>100

- -

<![if ! IE]>

<![endif]>35

<![if ! IE]>

<![endif]>65

<![if ! IE]>

<![endif]>64

Side view

Dimensions in mm

Fig. 2-2: Dimensions

g01xx05e

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.

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The WAGO-I/O-SYSTEM 750 • 11

Component Update

PROFIBUS

<![if ! IE]>

<![endif]>WAGO - I/O - SYSTEM

<![if ! IE]>

<![endif]>750-333

01030002

03-B

060606

72072

					ITEM-NO.:750-333
<![if ! IE]> <![endif]>24V DC AWG 28-14 55°Cmaxambient	<![if ! IE]> <![endif]>22XMAND22ZALISTED	<![if ! IE]> <![endif]>B-3020003006006006	72072 NO DS SW HW FWL		PROFIBUS DP 12 MBd /DPV1
<![if ! IE]> <![endif]>24V DC AWG 28-14 55°Cmaxambient	<![if ! IE]> <![endif]>22XMAND22ZALISTED	<![if ! IE]> <![endif]>B-3020003006006006	72072 NO DS SW HW FWL	DEMKO 02 ATEX132273 X
			GL	Hansastr. 27
				D-32423 Minden
					-	+	24 V
					-	+	0 V
				Power Supply			Power Supply
				Field			Electronic
				II 3 GD		PATENTS PENDING
				II 3 GD
		<![if ! IE]> <![endif]>0		EEx nA II T4
		<![if ! IE]> <![endif]>01

Manufacturing Number

0 1 0 3 0 0 0 2 0 3 - B 0 6 0 6 0 6

Calendar Year	Software	Hardware	Firmware Loader Internal
week	version	version	version	Number

Fig. 2-3: Example: Manufacturing Number of a PROFIBUS fieldbus coupler 750-333

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	NO			<- Only starting from
Number				Calendar week 13/2004
Datestamp	DS
Software index	SW
Hardware index	HW
Firmware loader	FWL			<- Only for coupler/controller
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.

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

2.6.1Installation 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

2.6.2Total 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

The maximal total expansion of a node must not exceed 831 mm

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The WAGO-I/O-SYSTEM 750 • 13

Mechanical Setup

2.6.3Assembly onto Carrier Rail

2.6.3.1Carrier 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 electromagnetic 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

2.6.3.2WAGO 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

2.6.4Spacing

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.

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The WAGO-I/O-SYSTEM 750 • 15

Mechanical Setup

2.6.5Plugging 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

2.6.6Assembly 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).

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The WAGO-I/O-SYSTEM 750 • 17

Mechanical Setup

2.6.7Internal 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)

WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP

18 • The WAGO-I/O-SYSTEM 750

Mechanical Setup

2.6.8Power 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

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8 mm

1 mm2 for 2 conductors with 0.5 mm2 each

216-103

or products with comparable properties

The WAGO-I/O-SYSTEM 750 • 19

Mechanical Setup

2.6.9Wire 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

Nominal cross sectionmax.

WAGO Product

WAGO-I/O-SYSTEM 750 ETHERNET TCP/IP

20 • The WAGO-I/O-SYSTEM 750

Power Supply

2.7 Power Supply

2.7.1Isolation

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

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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.

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2.7.2System Supply

2.7.2.1Connection

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

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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

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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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2.7.2.2Alignment

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*)	Current consumption via system voltage:
	5 V for electronics of the bus modules and coupler /
	controller
Residual current for bus	Available current for the bus modules. Provided by
terminals*)	the bus power supply unit. See coupler / controller
	and internal system supply module (750-613)
*) cf. catalogue W4 Volume 3, manuals or Internet
Example	Coupler 750-301:
	internal current consumption:350 mA at 5V
	residual current for
	bus modules:	1650 mA at 5V
	sum I(5V) total :	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 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 maximum input current of the 24 V system supply is 500 mA. The exact electrical consumption (I(24 V)) can be determined with the following formulas:

Coupler/Controller
I(5 V) total =	Sum of all the internal current consumption of the connected
	bus modules
	+ internal current consumption coupler / controller
750-613
I(5 V) total =	Sum of all the internal current consumption of the connected
	bus modules
Input current I(24 V) =	5 V / 24 V * I(5 V) total / 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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2.7.3Field Supply

2.7.3.1Connection

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)

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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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Power Supply

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.

2.7.3.2Fusing

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)

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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

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Lifting the cover to the side opens the fuse carrier.

Fig. 2-16: Opening the fuse carrier

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Fig. 2-17: Change fuse

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After changing the fuse, the fuse carrier is pushed back into its original position.

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