WAGO 750-484 User manual

WAGO-I/O-SYSTEM 750
Manual
750-484
2 AI 4-
20 mA HART Ex i
2-Channel-Analog Input Module 4-
20 mA HART, Ex i
V 1.2.0
HW-Version 04, SW-
Version 03

2 WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
© 2017 WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]om
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]om
Every conceivable measure has been taken to ensure the accuracy and
completeness of this documentation. However, as errors can never be fully
excluded, we always appreciate any information or suggestions for improving the
documentation.
E-Mail: [e-mail]
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 protected by trademark or patent.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-484 2 AI 4-20 mA HART Ex i
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Table of Contents
1Notes about this Documentation................................................................. 5
1.1 Validity of this Documentation................................................................. 5
1.2 Copyright................................................................................................... 5
1.3 Symbols..................................................................................................... 6
1.4 Number Notation....................................................................................... 8
1.5 Font Conventions ...................................................................................... 8
2Important Notes ........................................................................................... 9
2.1 Legal Bases ............................................................................................... 9
2.1.1 Subject to Changes ............................................................................... 9
2.1.2 Personnel Qualifications....................................................................... 9
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with
Underlying Provisions.......................................................................... 9
2.1.4 Technical Condition of Specified Devices......................................... 10
2.2 Safety Advice (Precautions).................................................................... 11
3Device Description ..................................................................................... 13
3.1 View ........................................................................................................ 16
3.2 Connectors............................................................................................... 17
3.2.1 Data Contacts/Internal Bus................................................................. 17
3.2.2 Power Jumper Contacts/Field Supply ................................................ 18
3.2.3 CAGE CLAMP®Connectors ............................................................. 19
3.3 Display Elements .................................................................................... 20
3.4 Operating Elements................................................................................. 20
3.5 Schematic Diagram ................................................................................. 21
3.6 Technical Data ........................................................................................ 22
3.6.1 Device Data ........................................................................................ 22
3.6.2 Supply................................................................................................. 22
3.6.3 Communication .................................................................................. 22
3.6.4 Inputs .................................................................................................. 23
3.6.5 Explosion Protection .......................................................................... 24
3.6.6 Connection Type ................................................................................ 24
3.6.7 Climatic Environmental Conditions................................................... 25
3.7 Approvals ................................................................................................ 26
3.8 Standards and Guidelines........................................................................ 28
4Process Image ............................................................................................. 30
4.1 2 AI 4-20 mA + 6-Byte Mailbox............................................................. 31
4.2 2 AI 4-20 mA, 1 HART Variable per Channel ....................................... 33
4.3 2 AI 4-20 mA, 2 HART Variables per Channel...................................... 33
4.4 2 AI 4-20 mA, 3 HART Variables per Channel...................................... 34
4.5 2 AI 4-20 mA, 4 HART Variables per Channel...................................... 35
4.6 AI 4-20 mA + Acyclic PROFIBUS Services.......................................... 37
5Appendix: Information for Hart Library................................................ 38
5.1 CODESYS Library.................................................................................. 38
5.2 PROFIBUS Gateway .............................................................................. 38
6Mounting..................................................................................................... 39

4 Table of Contents WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
6.1 Mounting Sequence................................................................................. 39
6.2 Inserting and Removing Devices ............................................................ 40
6.2.1 Inserting the I/O Module .................................................................... 40
6.2.2 Removing the I/O Module.................................................................. 41
7Connect Devices ......................................................................................... 42
7.1 Connecting a Conductor to the CAGE CLAMP®................................... 42
7.2 Power Supply Concept............................................................................ 43
7.2.1 Power Supply Concept in Marine Applications ................................. 45
7.3 Connection Example ............................................................................... 47
8Function Description ................................................................................. 48
9Operating Modes........................................................................................ 49
9.1 Setting the Operating Mode Parameters ................................................. 50
9.1.1 Setting Up using WAGO-I/O-CHECK .............................................. 50
9.1.2 Setting Up via GSD............................................................................ 53
9.2 FDT/DTM Concept................................................................................. 57
9.3 HART on PROFIBUS............................................................................. 58
10 Description of Operation........................................................................... 60
10.1 With PLC Library on all compatible 75x-xxx Couplers/Controllers...... 60
10.1.1 Communication with 75x-xxx via PLC Library................................. 61
10.1.2 Commissioning on a 75x-xxx via PLC Library ................................. 62
10.2 With HART Dynamic Variables on PROFIBUS DP/V1 750-333
and 750-833............................................................................................. 63
10.2.1 Communication on the 750-333, -833 with Dynamic Variables........ 65
10.2.2 Commissioning on the 750-333, -833 with Dynamic Variables ........ 65
10.3 FDT/DTM with the PROFIBUS DP/V1 750-333, 750-833 ................... 67
10.3.1 Communication on 750-333, -833 via FDT/DTM ............................. 68
10.3.2 Commissioning on a 750-333, -833 via FDT/DTM........................... 69
11 Use in Hazardous Environments .............................................................. 78
11.1 Marking Configuration Examples........................................................... 79
11.1.1 Marking for Europe According to ATEX and IECEx........................ 79
11.1.2 Marking for America (NEC) and Canada (CEC) ............................... 82
11.2 Installation Regulations........................................................................... 86
11.2.1 Special Notes Regarding Explosion Protection.................................. 86
11.2.2 Special Notes Regarding ANSI/ISA Ex ............................................. 88
12 Appendix..................................................................................................... 89
12.1 Rated Surge Voltage ............................................................................... 89
List of Figures ...................................................................................................... 90
List of Tables........................................................................................................ 92

WAGO-I/O-SYSTEM 750 Notes about this Documentation 5
750-484 2 AI 4-20 mA HART Ex i
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1 Notes about this Documentation
Always retain this documentation!
This documentation is part of the product. Therefore, retain the documentation
during the entire service life of the product. Pass on the documentation to any
subsequent user. In addition, ensure that any supplement to this documentation is
included, if necessary.
1.1 Validity of this Documentation
This documentation is only applicable to the I/O module 750-484
(2 AI 4-20 mA HART Ex i).
The I/O module 750-484 shall only be installed and operated according to the
instructions in this manual and in the manual for the used fieldbus
coupler/controller.
Consider power layout of the WAGO-I/O-SYSTEM 750!
In addition to these operating instructions, you will also need the manual for the
used fieldbus coupler/controller, which can be downloaded at www.wago.com.
There, you can obtain important information including information on electrical
isolation, system power and supply specifications.
1.2 Copyright
This Manual, including all figures and illustrations, is copyright-protected. Any
further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and phototechnical
filing/archiving (e.g., photocopying) as well as any amendments require the
written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany.
Non-observance will involve the right to assert damage claims.

6 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
1.3 Symbols
Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in
damage to property.

WAGO-I/O-SYSTEM 750 Notes about this Documentation 7
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Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).

8 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
1.4 Number Notation
Table 1: Number Notation
Number Code
Example
Note
Decimal
100
Normal notation
Hexadecimal
0x64
C notation
Binary
'100'
'0110.0100'
In quotation marks, nibble separated with
dots (.)
1.5 Font Conventions
Table 2: Font Conventions
Font Type
Indicates
italic
Names of paths and data files are marked in italic-type.
e.g.: C:\Program Files\WAGO Software
Menu
Menu items are marked in bold letters.
e.g.: Save
>
A greater-than sign between two names means the selection of a
menu item from a menu.
e.g.: File > New
Input
Designation of input or optional fields are marked in bold letters,
e.g.: Start of measurement range
“Value”
Input or selective values are marked in inverted commas.
e.g.: Enter the value “4 mA” under Start of measurement range.
[Button]
Pushbuttons in dialog boxes are marked with bold letters in square
brackets.
e.g.: [Input]
[Key]
Keys are marked with bold letters in square brackets.
e.g.: [F5]

WAGO-I/O-SYSTEM 750 Important Notes 9
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2 Important Notes
This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To protect
your health and prevent damage to devices as well, it is imperative to read and
carefully follow the safety guidelines.
2.1 Legal Bases
2.1.1 Subject to Changes
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications. WAGO Kontakttechnik GmbH & Co. KG owns all
rights arising from the granting of patents or from the legal protection of utility
patents. Third-party products are always mentioned without any reference to
patent rights. Thus, the existence of such rights cannot be excluded.
2.1.2 Personnel Qualifications
All sequences implemented on WAGO-I/O-SYSTEM 750 devices may only be
carried out by electrical specialists with sufficient knowledge in automation. The
specialists must be familiar with the current norms and guidelines for the devices
and automated environments.
All changes to the coupler or controller should always be carried out by qualified
personnel with sufficient skills in PLC programming.
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with
Underlying Provisions
Fieldbus couplers, fieldbus controllers and I/O modules found in the modular
WAGO-I/O-SYSTEM 750 receive digital and analog signals from sensors and
transmit them to actuators or higher-level control systems. Using programmable
controllers, the signals can also be (pre-) processed.
The devices have been developed for use in an environment that meets the IP20
protection class criteria. Protection against finger injury and solid impurities up to
12.5 mm diameter is assured; protection against water damage is not ensured.
Unless otherwise specified, operation of the devices in wet and dusty
environments is prohibited.
Operating the WAGO-I/O-SYSTEM 750 devices in home applications without
further measures is only permitted if they meet the emission limits (emissions of
interference) according to EN 61000-6-3. You will find the relevant information
in the section “Device Description” > “Standards and Guidelines” in the manual
for the used fieldbus coupler/controller.
Appropriate housing (per 2014/34/EU) is required when operating the WAGO-
I/O-SYSTEM 750 in hazardous environments. Please note that a prototype test

10 Important Notes WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
certificate must be obtained that confirms the correct installation of the system in
a housing or switch cabinet.
2.1.4 Technical Condition of Specified Devices
The devices to be supplied ex works are equipped with hardware and software
configurations, which meet the individual application requirements. WAGO
Kontakttechnik GmbH & Co. KG will be exempted from any liability in case of
changes in hardware or software as well as to non-compliant usage of devices.
Please send your request for modified and new hardware or software
configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

WAGO-I/O-SYSTEM 750 Important Notes 11
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2.2 Safety Advice (Precautions)
For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any
installation, repair or maintenance work.
Install the device only in appropriate housings, cabinets or in electrical
operation rooms!
The WAGO-I/O-SYSTEM 750 and its components are an open system. As such,
install the system and its components exclusively in appropriate housings,
cabinets or in electrical operation rooms. Allow access to such equipment and
fixtures to authorized, qualified staff only by means of specific keys or tools.
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts), since the long-term functionality of device/module involved can no
longer be ensured.
Protect the components against materials having seeping and insulating
properties!
The components are not resistant to materials having seeping and insulating
properties such as: aerosols, silicones and triglycerides (found in some hand
creams). If you cannot exclude that such materials will appear in the component
environment, then install the components in an enclosure being resistant to the
above-mentioned materials. Clean tools and materials are imperative for handling
devices/modules.
Clean only with permitted materials!
Clean soiled contacts using oil-free compressed air or with ethyl alcohol and
leather cloths.

12 Important Notes WAGO-I/O-SYSTEM 750
750-484 2 AI 4-20 mA HART Ex i
Manual
V 1.2.0 HW-Version 04, SW-Version 03
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.
Avoid electrostatic discharge!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge when touched. Please observe the safety precautions
against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the
devices, please ensure that environmental factors (personnel, work space and
packaging) are properly grounded.

WAGO-I/O-SYSTEM 750 Device Description 13
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3 Device Description
The Analog Input Module 750-484 processes analog signals with the norm value
of 4 ... 20 mA from intrinsically safe sensors, operating in hazardous
environments of zone 0+1.
Installation only in zone 2 or in non-hazardous environments!
The installation of the WAGO-I/O-SYSTEM 750 fieldbus couplers/controllers
and I/O modules is only to be done in zone 2 or in non-hazardous environments.
The I/O module also enables digital communication to be carried out with HART-
enabled field devices (Highway Addressable Remote Transducer).
To fulfill Ex i regulations, only passive transducers, that means without their own
voltage supply, like adjustable resistances, pressure, flow and level meters, may
be connected to the input module.
The transducers are directly supplied from the I/O module.
The I/O module allows the connection of 2-wire technology sensors. The sensors
are connected via HART + and HART +. They are supplied by the I/O module’s
field supply.
The I/O module has 2 input channels and enables field signals to be received via
the HART 1+ and HART 1− and HART 2+ and HART 2−connections. Typically,
the current values are measured at these connections, but at the same time the
HART signals can also be coupled and decoupled on an alternating voltage basis.
The channels have a common reference potential and a shield connection.
The shield connection is fed directly to the carrier rail and contact is made
automatically by snapping the module onto the rail.
The assignment of the connections is described in the “Connectors” section.
Connection examples are shown in section “Connect Devices” > … >
“Connection Example(s)”.
The channels are not electrically isolated from one another.
The input signal is electrically isolated and is transmitted with a resolution of
12 bits.
Simple parameterization of the HART I/O module for 6 different operating modes
enables the I/O module to be used optimally for 3 different types of application.

14 Device Description WAGO-I/O-SYSTEM 750
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Table 3: Types of Application
Types of Application for the HART I/O Module
1
Programmable fieldbus controllers can communicate with HART devices
from IEC61131-3 programs using the "WagoLibHART_0x.lib" PLC library.
2
Up to 4 HART dynamic variables (PV, SV, TV, QV) can be incorporated in
the cyclic process image of the 750-333 PROFIBUS Coupler or 750-833
PROFIBUS Controller by parameterization via GSD (device master data) or
WAGO-I/O-CHECK 2.
3
When using the 750-333 PROFIBUS DP/V1 Coupler or 750-833
PROFIBUS Controller and the 759-360 PROFIBUS/HART Gateway DTM,
FDT tool routing is possible to the DTM of the connected HART device.
The operating status of the channels is indicated by a green status LED per
channel.
A red fault LED per channel indicates a wire break or that the signal is outside the
measuring range.
The meaning of the LEDs is described in the “Display Elements” section.
Any configuration of the I/O module is possible within an intrinsically safe
segment when configuring the fieldbus node. An arrangement in groups within the
group of potentials is not necessary.
The HART I/O module can be used with all couplers and controllers of the
WAGO-I/O-SYSTEM 750 listed in the following table “Compatibility List”.

WAGO-I/O-SYSTEM 750 Device Description 15
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Table 4: Compatibility List
Bus System
Fieldbus
Coupler/
Controller
Item No.
Hard-
ware
Version
Soft-
ware
Version
Max.
Number
of
Modules
Function *)
ETHERNET
TCP/IP
Programmable
Fieldbus
Controllers
750-841
03
07
8
(1)
750-842
04
12
8
(1)
750-871
01
01
8
(1)
750-872
01
01
8
(1)
750-872/
020-000
01 07 8 (1)
750-873
01
01
8
(1)
CANopen
Programmable
Fieldbus
Controllers
750-837
07
12
8
(1)
750-838 02 12 8 (1)
DeviceNet
Programmable
Fieldbus
Controllers
750-806 04 09 8 (1)
LON
Programmable
Fieldbus
Controllers
750-819 xx 09 8 (1)
PROFIBUS
Fieldbus Coupler
750-333
12
ab 13
8
(2), (3), (4)
Programmable
Fieldbus
Controllers
750-833 12 ab 10 8 (1), (2), (3), (4)
BACnet
Programmable
Fieldbus
Controllers
750-830 01 01 8 (1)
KNX
Programmable
Fieldbus
Controllers
750-849 xx ab 01 8 (1)
Other Fieldbus Coupler/Controller on request.
+)
Functions:
(1)
WAGO-I/O-PRO CAA (CODESYS) PLC library „WagoLibHART_0x.lib“
(2)
Cyclic Profibus communication with HART dynamic variables
(3)
Acyclic Profibus communication with HART Toolrouting FDT/DTM or eddl/SimaticPDM
(4)
PROFIBUS/HART Gateway DTM 759-360

16 Device Description WAGO-I/O-SYSTEM 750
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3.1 View
Figure 1: View
Table 5: Legend for Figure “View”
Pos.
Description
Details See Section
1
Marking possibility with Mini-
WSB
---
2
Status LEDs
“Device Description” > “Display Elements”
3
Data contacts
“Device Description” > “Connectors”
4
CAGE CLAMP®connectors
“Device Description” > “Connectors”
5
Power jumper contacts
“Device Description” > “Connectors”
6
Release tab
“Mounting” > “Inserting and Removing
Devices”

WAGO-I/O-SYSTEM 750 Device Description 17
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3.2 Connectors
3.2.1 Data Contacts/Internal Bus
Communication between the fieldbus coupler/controller and the I/O modules as
well as the system supply of the I/O modules is carried out via the internal bus. It
is comprised of 6 data contacts, which are available as self-cleaning gold spring
contacts.
Figure 2: Data Contacts
Do not place the I/O modules on the gold spring contacts!
Do not place the I/O modules on the gold spring contacts in order to avoid soiling
or scratching!
Ensure that the environment is well grounded!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge. When handling the devices, ensure that the environment
(persons, workplace and packing) is well grounded. Avoid touching conductive
components, e.g. data contacts.

18 Device Description WAGO-I/O-SYSTEM 750
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3.2.2 Power Jumper Contacts/Field Supply
Risk of injury due to sharp-edged blade contacts!
The blade contacts are sharp-edged. Handle the I/O module carefully to prevent
injury.
The I/O module 750-484 has 2 self-cleaning power jumper contacts that supply
and transmit power for the field side. The contacts on the left side of the I/O
module are designed as blade contacts and those on the right side as spring
contacts.
Figure 3: Power Jumper Contacts
Table 6: Legend for Figure “Power Jumper Contacts”
Contact
Type
Function
1
Spring contact
Potential transmission (Uv) for field supply
2
Spring contact
Potential transmission (0 V) for field supply
3
Blade contact
Potential feed-in (0 V) for field supply
4
Blade contact
Potential feed-in (Uv) for field supply
Do not exceed maximum current via power contacts!
The maximum current available from the 750-606 or 750-625/000-001 Ex-i
Supply Module is 1 A.
When configuring the system, ensure that this current is not exceeded.
If exceeded, an additional potential feed module must be used.

WAGO-I/O-SYSTEM 750 Device Description 19
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3.2.3 CAGE CLAMP®Connectors
Figure 4: CAGE CLAMP®Connectors
Table 7: Legend for Figure “CAGE CLAMP®Connectors”
Channel
Designation
Connector
Function
1
HART 1 +
1 (left)
Sensor 1: Connection HART +
HART 1 -
3 (left)
Sensor 1: Connection HART -
S
4 (left)
Screen
2
HART 2 +
5 (left)
Sensor 2: Connection HART +
HART 2 -
7 (left)
Sensor 2: Connection HART -
S
8 (left)
Screen

20 Device Description WAGO-I/O-SYSTEM 750
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3.3 Display Elements
Figure 5: Display Elements
Table 8: Legend for Figure „Display Elements“
A
B
Channel 1
state Description
Function
HART 1
Error
HART 1
Green/Off 1 × flashing Power-On
Hardware and software
initialization
Green Red/Off
Ready for
operation
Power on completed successfully;
internal data bus communication
Green/Off Red Error
Wire break, measuring overrange/
underrange
E
F
Channel 2
state Description
Function
HART 2
Error
HART 2
Green/Off 1 × flashing Power-On
Hardware and software
initialization
Green Red/Off
Ready for
operation
Power on completed successfully;
internal data bus communication
Green/Off Red Error
Wire break, measuring overrange/
underrange
3.4 Operating Elements
The I/O module 750-484 has no operating elements.