WAGO 750-492 User manual

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Manual
WAGO-I/O-SYSTEM 750
2AI 4-20mA Differential Input
750-492
2-Channel Analog Input Module 4-20 mA,
Differential Input
Version 1.1.0
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2 WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
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]
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]
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: [email protected]
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.
=== Ende der Liste für TextmarkeEi nband_vorne ===

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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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 Operating Elements................................................................................. 17
3.5 Schematic Diagram ................................................................................. 18
3.6 Technical Data ........................................................................................ 19
3.6.1 Device Data ........................................................................................ 19
3.6.2 Power Supply...................................................................................... 19
3.6.3 Communication .................................................................................. 19
3.6.4 Inputs .................................................................................................. 20
3.6.5 Connection Type ................................................................................ 21
3.6.6 Climatic Environmental Conditions................................................... 21
3.7 Approvals ................................................................................................ 22
3.8 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
6Connect Devices ......................................................................................... 29
6.1 Connecting a Conductor to the CAGE CLAMP®................................... 29
6.2 Connection Example ............................................................................... 30
7Use in Hazardous Environments .............................................................. 31
7.1 Marking Configuration Examples........................................................... 32
7.1.1 Marking for Europe According to ATEX and IEC-Ex ...................... 32

4 Table of Contents WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
7.1.2 Marking for America According to NEC 500.................................... 37
7.2 Installation Regulations........................................................................... 38
7.2.1 Special Conditions for Safe Use (ATEX Certificate TÜV 07 ATEX
554086 X)........................................................................................... 39
7.2.2 Special Conditions for Safe Use (ATEX Certificate TÜV 12 ATEX
106032 X)........................................................................................... 40
7.2.3 Special Conditions for Safe Use (IEC-Ex Certificate TUN 09.0001 X)41
7.2.4 Special Conditions for Safe Use (IEC-Ex Certificate IECEx TUN
12.0039 X).......................................................................................... 42
7.2.5 Special Conditions for Safe Use According to ANSI/ISA 12.12.01.. 43
List of Figures ...................................................................................................... 44
List of Tables........................................................................................................ 45
=== Ende der Liste für TextmarkeVer zeichnis_vorne ===

WAGO-I/O-SYSTEM 750 Notes about this Documentation 5
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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1 Notes about this Documentation
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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.
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1.1 Validity of this Documentation
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This documentation is only applicable to the I/O module 750-492
(2AI 4-20mA Differential Input).
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The I/O module 750-492 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.
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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.
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6 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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1.3 Symbols
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Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided,
could result in death or serious injury.
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Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
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Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
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Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
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Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in
damage to property.
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WAGO-I/O-SYSTEM 750 Notes about this Documentation 7
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).
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8 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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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 (.)
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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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WAGO-I/O-SYSTEM 750 Important Notes 9
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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2 Important Notes
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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.
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2.1 Legal Bases
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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.
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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.
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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.

10 Important Notes WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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.
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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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WAGO-I/O-SYSTEM 750 Important Notes 11
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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2.2 Safety Advice (Precautions)
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For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
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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.
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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.
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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.
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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.
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Clean only with permitted materials!
Clean soiled contacts using oil-free compressed air or with ethyl alcohol and
leather cloths.
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12 Important Notes WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
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Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.
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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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WAGO-I/O-SYSTEM 750 Device Description 13
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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3 Device Description
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The Analog Input Module 750-492 (2AI 4-20mA Differential Input) processes
differential signals with the norm value of 4 ... 20 mA.
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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.
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The shield connection is fed directly to the carrier rail and contact is made
automatically by snapping the module onto the rail.
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The assignment of the connections is described in the “Connectors” section.
Pos: 18.1.5 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschreibung/Ei nleitung/I/ O-Beschreibung/Allge mein/Verweis auf Kapitel "Gerät eans chließen" > "Anschlussbeis piel(e)" @ 5\mod_12460152032 81_21.docx @ 36298 @ @ 1
Connection examples are shown in section “Connecting Devices” > … >
“Connection Example(s)”.
Pos: 18.1.6 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/Funk tion/Galvanisc he Trennung Ausgangssigna l/Systemebene ( 13 Bit) @ 20\mod_1408090193659 _21.docx @ 161856 @ @ 1
The Output signal is electrically isolated and will be transmitted with a resolution
of 13 bits.
Pos: 18.1.7 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/LE D-Anzeige/LED Zustand Be trieb und Klemmenbus-Ko mmunikation @ 5\mod_1247054 901573_21.docx @ 36892 @ @ 1
The operational readiness and the trouble-free internal data bus communication of
the channels are indicated via a green function LED.
Pos: 18.1.8 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/LE D-Anzeige/LED Fehler Kur zschluss/Drahtbr uch/Bereichsüber -/unterschreitung @ 5\mod_12453 91942765_21.doc x@ 35672 @ @ 1
A red error LED per channel indicates a wire break, a short circuit or that the
signal is outside the measuring range.
Pos: 18.1.9 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/LE D-Anzeige/Verweis a uf Kapitel "Anzeig eelemente" @ 5\mod_124601 0525000_21.doc x@ 36194 @ @ 1
The meaning of the LEDs is described in the “Display Elements” section.
Pos: 18.1.10 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/Ver sorgung/Anordnu ng der Potentialgruppen u nd Busklemmen in den Potentia lgruppen beliebig @ 9\mod_12 89992989792_21.doc x @ 66482 @ @1
Both the potential groups and the individual modules within these groups can be
arranged in any combination when designing the field bus node.
Pos: 18.1.11 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/Ver sorgung/Spannung sversorgung aus Sy stemspannung @ 5\mod_12471164 33759_21.docx @ 36920 @ @ 1
Power to the internal electronics is supplied via internal data bus.
Pos: 18.1.12 /Seri e 750 (WAGO-I/O-SYSTEM)/Wichtige Erläuter ungen/Sicherheits- und s onstige Hinweise/ Hinweis/Hinweis: Po tentialeinspeisek lemme einsetzen! (kei ne LK) @ 3\mod_1226499089640_21. docx @ 25026 @ @ 1
Use a supply module!
Use a supply module for field-side power supply of downstream I/O modules.
Pos: 18.1.13 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschrei bung/Einleitung/Ei nsatzbereich/ Einsatzbereich 750-xxxx a lle Koppler/Control ler ohne Economy-Koppler @ 3\mo d_123254186746 8_21.docx @ 26525 @ @ 1
The I/O module 750-492 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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14 Device Description WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
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3.1 View
Pos: 18.4 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Ansicht/Analogei ngangsklemmen/Ansi cht 750-0492 @ 20\mod_140793696071 7_21.docx @ 161734 @ @ 1
Figure 1: View
Pos: 18.5 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Ansicht/Ansic htC ageClamp®_Legende mit LE Ds_ohne Leistungskon takte @ 16\mod_13718160910 53_21.docx @ 124052 @ @ 1
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”
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WAGO-I/O-SYSTEM 750 Device Description 15
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Pos: 18.7 /Alle Serien (A llgemeine Module)/Ü berschriften für alleSerien/ Gerätebeschreibun g/Anschlüsse - Überschr ift 2 @ 4\mod_12409842626 56_21.docx @ 31961 @ 2 @ 1
3.2 Connectors
Pos: 18.8 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Anschlüsse/Datenk ontakte/Klemmenbus - Übersc hrift 3 @ 6\mod_12562 94684083_21.docx @ 43660 @ 3 @ 1
3.2.1 Data Contacts/Internal Bus
Pos: 18.9.1 /Seri e 750 (WAGO-I/O-SYSTEM)/Gerätebeschreibung/Ansc hlüsse/Datenkont akte - Feldbuskoppler/-c ontroller, Abbildung und Beschreibung @ 3\mod_1231771259 187_21.docx @ 26002 @ @ 1
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
Pos: 18.9.2 /Seri e 750 (WAGO-I/O-SYSTEM)/Wichtige Erläuterun gen/Sicherheits- und sons tige Hinweise/Achtung/Ac htung: Busklemmen nicht auf Goldfederko ntakte legen! @ 7\mod_1266318463636_21. docx @ 50695 @ @1
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!
Pos: 18.9.3 /Seri e 750 (WAGO-I/O-SYSTEM)/Wichtige Erläuterun gen/Sicherheits- und so nstige Hinweise/Ac htung/Achtung: ESD - A uf gute Erdung der Umgebung achten! @7\mod_126 6318538667_21.doc x@ 50708 @ @ 1
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.
Pos: 18.10 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Anschlüsse/Leis tungskontakte/Feld versorgung - Überschrif t 3 @ 6\mod_1256294692864_21. docx @ 43664 @ 3 @ 1
3.2.2 Power Jumper Contacts/Field Supply
Pos: 18.11 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Anschlüsse/Leis tungskontakte nic ht vorhanden @ 8\mod_12810739 36319_21.docx @ 62530 @ @ 1
The I/O module 750-492 has no power jumper contacts.
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16 Device Description WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Pos: 18.13 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Anschlüsse/CA GECLA MP-Anschlüsse - Überschri ft 3 @ 6\mod_1256296337770_ 21.docx @ 43674 @ 3 @ 1
3.2.3 CAGE CLAMP®Connectors
Pos: 18.14 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Anschlüsse/Analo geingangsklemmen/ Anschlüsse 750-0475, -0477, -0479, -0480, -0483, -0492 @ 20\mod_1407 938098672_21.docx @ 161748 @ @ 1
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 −
S
4
Shield (screen)
2
+AI 2
5
Input +AI 2, differential input +
−AI 2
6
Input −AI 2, differential input −
S
8
Shield (screen)
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WAGO-I/O-SYSTEM 750 Device Description 17
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Pos: 18.16 /Alle Seri en (Allgemeine Module)/ Überschriften für alleSerien/ Gerätebeschrei bung/Anzeigeelemen te- Über schrift 2 @ 4\mod_12409 84390875_21.docx @ 31964 @ 2 @ 1
3.3 Display Elements
Pos: 18.17 /Serie 750 ( WAGO-I/O-SYSTEM)/Ger ätebeschreibung/An zeigeelemente/Ana logeingangsklemmen/A nzeigeelemente 750-04 66, -0454, -0492 @ 10\mod_1298880287758_21.doc x @ 70301 @ @1
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 Operating Elements
Pos: 18.19 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Bedienelemente/Be dienelemente Busk lemme 750-xxxx nicht vorhande n @ 4\mod_1236322031125 _21.docx @ 28063 @ @1
The I/O module 750-492 has no operating elements.
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18 Device Description WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Pos: 18.21 /Alle Seri en (Allgemeine Module)/ Überschriften für alleSerien/ Gerätebeschrei bung/Schematisches Scha ltbild - Überschrif t 2 @ 4\mod_124098444131 2_21.docx @ 31967 @ 2 @ 1
3.5 Schematic Diagram
Pos: 18.22 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Schematische Sc haltbilder/Analogeing angsklemmen/Sche matisches Schaltbi ld 750-0492 @ 20\mod_1407940866257 _21.docx @ 161758 @ @ 1
Figure 5: Schematic diagram
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WAGO-I/O-SYSTEM 750 Device Description 19
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
Pos: 18.24 /Alle Seri en (Allgemeine Module)/ Überschriften für alleSerien/ Gerätebeschr eibung/Technische Daten - Übersc hrift 2 @ 3\mod_1232 967587687_21.docx @ 26924 @ 2 @ 1
3.6 Technical Data
Pos: 18.25 /Serie 750 (W AGO-I/O-SYSTEM)/Gerätebeschreibung/ Technische Daten/An alogeingangskle mmen/Technische Daten 750-0492 @ 20\mod_14080236 99865_21.docx @ 161762 @ 3333 @ 1
</dg_
3.6.1 Device Data
Table 6: Technical Data – Device
Width
12 mm
Height (from upper edge of DIN 35 rail)
64 mm
Depth
100 mm
Weight
54 g
3.6.2 Power Supply
Table 7: Technical Data, Power Supply
Power supply
Via system voltage DC/DC
Current consumption, system voltage
typ.
(5 VDC)
80 mA
Dielectric strength
500 VDC channel/channel or
channel/system
3.6.3 Communication
Table 8: Technical Data, Communication
Data width, internal (internal data bus)
2 × 16 bit data,
2 × 8 bit control/status (option)

20 Device Description WAGO-I/O-SYSTEM 750
750-492 2AI 4-20mA Differential Input
Manual
Version 1.1.0
3.6.4 Inputs
Table 9: Technical data, inputs
Number of inputs
2
Connection types
Differential measurement inputs
electrically isolated
Measured-value acquisition
Time synchronous (both inputs)
Signal current
4–20 mA
Input resistance
< 270 Ω at 20 mA
Input filter
Low pass 1st order fG = 5 kHz
Resolution of the A/D converter
14 bit
Monotonicity without error code
Yes
Value of an LSB (bit 2)
(Least Significant Bit)
1.9 µA
Resolution of measured value
13 bit
Measuring error at 25 °C
≤ ±0.05% of full scale value
Temperature coefficient
< ±0.01 % /K of full scale value
Measuring Errors
≤ 0.4% over the entire temperature
range
≤ 0.1% of upper range value (non-
linearity)
Crosstalk attenuation
≥ 80 db
Sampling time of repetition
1 ms
Sampling delay (module)
1 ms
Sampling delay (channel/channel)
≤ 1 µs
Sampling duration
≤ 5 µs
Conversion method
SAR
(Successive Approximation Register)
Mode
Continuously sampling (default)
Protection
Non-linear limiting
Admissible continuous overload
30 V
Diagnosis
Measurement range
underflow/overflow, wire break
Signaling at
measurement range
underflow/underflow
Status byte and LED
Pos: 18.26.1 /Alle Seri en (Allgemeine Module)/ Überschriften für alleSerien/ Gerätebeschrei bung/Anschlusstechni k - Überschrift 3 @ 17\mod_1380123271324_21.docx @ 132788 @ 3 @ 1