WAGO I/O-SYSTEM 750 User manual

Manual
WAGO I/O-SYSTEM 750
2AI 4-20mA Diff.
753-454
2-Channel Analog Input Module 4-
20 mA;
Differential Inputs
Version 1.1.0

2 WAGO I/O-SYSTEM 750
753-454 2AI 4-20mA Diff.
Manual
Version 1.1.0
© 2015 by 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 I/O-SYSTEM 750 Table of Contents 3
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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 ........................................................................................................ 14
3.2 Connectors............................................................................................... 15
3.2.1 Data Contacts/Internal Bus................................................................. 15
3.2.2 Power Jumper Contacts/Field Supply ................................................ 15
3.2.3 CAGE CLAMP®Connectors ............................................................. 16
3.3 Display Elements .................................................................................... 17
3.4 Schematic Diagram ................................................................................. 18
3.5 Technical Data ........................................................................................ 19
3.5.1 Device................................................................................................. 19
3.5.2 Supply................................................................................................. 19
3.5.3 Communication .................................................................................. 19
3.5.4 Inputs .................................................................................................. 19
3.5.5 Connection.......................................................................................... 19
3.5.6 Climatic Environmental Conditions................................................... 20
3.6 Approvals ................................................................................................ 21
3.7 Standards and Guidelines........................................................................ 23
4Process Image............................................................................................. 24
5Mounting..................................................................................................... 26
5.1 Mounting Sequence................................................................................. 26
5.2 Inserting and Removing Devices ............................................................ 27
5.2.1 Inserting the I/O Module .................................................................... 27
5.2.2 Removing the I/O Module.................................................................. 28
5.3 I/O Modules with Pluggable Wiring Level (Series 753) ........................ 29
5.3.1 Coding ................................................................................................ 30
5.3.2 Connector Removal ............................................................................ 32
6Connect Devices ......................................................................................... 33
6.1 Connecting a Conductor to the CAGE CLAMP®................................... 33
6.2 Connection Examples.............................................................................. 34

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7Use in Hazardous Environments .............................................................. 35
7.1 Marking Configuration Examples........................................................... 36
7.1.1 Marking for Europe According to ATEX and IEC-Ex ...................... 36
7.1.2 Marking for America According to NEC 500.................................... 41
7.2 Installation Regulations........................................................................... 42
7.2.1 Special Conditions for Safe Use (ATEX Certificate TÜV 07
ATEX 554086 X) ............................................................................... 43
7.2.2 Special Conditions for Safe Use (ATEX Certificate TÜV 12
ATEX 106032 X) ............................................................................... 44
7.2.3 Special Conditions for Safe Use (IEC-Ex Certificate
TUN 09.0001 X)................................................................................. 45
7.2.4 Special Conditions for Safe Use (IEC-Ex Certificate IECEx
TUN 12.0039 X)................................................................................. 46
7.2.5 Special Conditions for Safe Use According to ANSI/ISA 12.12.01.. 47
List of Figures ...................................................................................................... 48
List of Tables........................................................................................................ 49

WAGO I/O-SYSTEM 750 Notes about this Documentation 5
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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 753-454
(2AI 4-20mA Diff.).
The I/O module 753-454 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
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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.

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Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).

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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]

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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 that serve to increase the efficiency of technical
progress. 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.

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Appropriate housing (per 94/9/EG) is required when operating the WAGO-I/O-
SYSTEM 750 in hazardous environments. Please note that a prototype test
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.

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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.

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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.

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3 Device Description
The Analog Input Module 753-454 (2AI 4-20mA Diff.) processes differential
signals with the norm value of 4 ... 20 mA.
The I/O module has 2 input channels for differential signals. The sensors may be
received via the CAGE CLAMP®connectors +AI 1 and -AI 1 or +AI 2 and –AI 2.
The input channels have a common ground 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 “Connecting Devices” > … >
“Connection Example(s)”.
The input signal is electrically isolated and is transmitted with a resolution of
12 bits.
The operational readiness and the trouble-free internal data bus communication of
the channels are indicated via a green function LED.
A red fault LED per channel indicates a wire break or that the signal is outside the
measuring range.
With consideration of the power jumper contacts, the individual modules can be
arranged in any combination when configuring the fieldbus node. An arrangement
in groups within the group of potentials is not necessary.
Use a supply module!
Use a supply module for field-side power supply of downstream I/O modules.
Power to the internal electronics is supplied via internal data bus.
The I/O module 753-454 can be used with all fieldbus couplers/controllers of the
WAGO-I/O-SYSTEM 750 (except for the economy types 750-320, -323, -324
and -327).

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3.1 View
Depiction of the I/O module with 753-110 Connector!
Information on this pluggable connection pertains to the 753-110 Connector,
which is not included with the I/O module.
Figure 1: View
Table 3: 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
Release tab
“Mounting” > “Inserting and Removing
Devices” and “I/O Modules with
Pluggable Wiring Level (Series 753)”
6
Coding possibility with coding
fingers
“Mounting” > “Coding”
7
Test port
---
8
Fixing lug for cable ties
“Mounting” > “I/O Modules with
Pluggable Wiring Level (Series 753)”

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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.
3.2.2 Power Jumper Contacts/Field Supply
The I/O module 753-454 has no power jumper contacts.

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3.2.3 CAGE CLAMP®Connectors
Depiction of the I/O module with 753-110 Connector!
Information on this pluggable connection pertains to the 753-110 Connector,
which is not included with the I/O module.
Figure 3: CAGE CLAMP®Connectors
Table 4: Legend for Figure “CAGE CLAMP®Connectors”
Channel
Designation
Connector
Function
1
+AI 1
1
Input +AI 1: Differential input +
−AI 1
2
Input −AI 1: Differential input −
Common
(ground)
3 Ground of the analog input circuit
Shield
(screen)
4 Shield
2
+AI 2
5
Input +AI 2: Differential input +
−AI 2
6
Input −AI 2: Differential input −
Common
(ground)
7 Ground of the analog input circuit
Shield
(screen)
8 Shield

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3.3 Display Elements
Figure 4: Display Elements
Table 5: Legend for Figure “Display Elements”
Channel Designation LED State Function
1
Function
AI 1 A
Off
Not ready for operation or no or
disturbed internal bus communication
Green
Operational readiness and trouble-free
internal data bus communication
Error
AI 1 B
Off
Normal operation
Red
Overrange/underrange of the
admissible measuring range, broken
wire
2
Function
AI 2 C
Off
Not ready for operation or no or
disturbed internal bus communication
Green
Operational readiness and trouble-free
internal data bus communication
Error
AI 2 D
Off
Normal operation
Red
Overrange/underrange of the
admissible measuring range, broken
wire

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3.4 Schematic Diagram
Figure 5: Schematic Diagram

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3.5 Technical Data
3.5.1 Device
Table 6: Technical Data ‒ Device
Width
12 mm
Height (from upper edge of 35 DIN rail)
64 mm
Depth
100 mm
Weight
Approx. 51 g
3.5.2 Supply
Table 7: Technical Data ‒ Supply
Voltage supply
Via system voltage internal bus DC/DC
Current consumption (5 VDC system
voltage) typ.
70 mA
Isolation (peak value)
500 V system/supply
3.5.3 Communication
Table 8: Technical Data ‒ Communication
Internal bit width (internal bus)
2-Channel operation
2 × 16 bits data
2 × 8 bits control/status (optional)
3.5.4 Inputs
Table 9: Technical Data ‒ Inputs
No. of inputs
2
Sensor connection
4-wire (differential inputs, external
transducer supply is necessary)
Conversion time
2 ms
Resolution
12 bits
Measurement deviation at 25°C
≤ ±0,2 % of full scale value
Temperature coefficient
< ±0,01 %/K of full scale value
Common mode voltage max.
35 VDC
Signal current
4 mA ... 20 mA
Input resistance typ.
< 220 Ω at 20 mA
3.5.5 Connection
Table 10: Technical Data – Field Wiring
Wire connection
CAGE CLAMP®
Cross section
0.08 mm² ... 2.5 mm² / AWG 28 … 14
Stripped length
9 ... 10 mm / 0.37 in

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Table 11: Technical Data – Data Contacts
Data contacts
Slide contact, hard gold plated, self-
cleaning
3.5.6 Climatic Environmental Conditions
Table 12: Technical Data – Climatic Environmental Conditions
Operating temperature range
0 °C … 55 °C
Storage temperature range
−25 °C … +85 °C
Relative humidity without condensation
Max. 95 %
Resistance to harmful substances
Acc. to IEC 60068-2-42 and
IEC 60068-2-43
Maximum pollutant concentration at
relative humidity < 75 %
SO
2
≤25 ppm
H2S
≤
10 ppm
Special conditions
Ensure that additional measures for
components are taken, which are used in
an environment involving:
– dust, caustic vapors or gases
– ionizing radiation