WAGO I/O SYSTEM 750 User manual

Manual
WAGO I/O System 750
750-537
8DO 24V DC 0.5A, diagnostics
8
-Channel Digital Output; 24 VDC; short-circuit
protected;
high-side switching; with diagnostics
Version 1.2.0

2 WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
© 2021 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: www.wago.com
Technical Support
Phone: [phone] – 4 45 55
Fax: [phone] – 84 45 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.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.

WAGO I/O System 750 Table of Contents 3
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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 750 Series in Compliance with Underlying Provisions.......9
2.1.4 Technical Condition of Specified Devices.........................................10
2.1.4.1 Disposal ......................................................................................10
2.1.4.1.1 Electrical and Electronic Equipment........................................10
2.1.4.1.2 Packaging...............................................................................11
2.2 Safety Advice (Precautions) .................................................................12
3Device Description..................................................................................16
3.1 View .....................................................................................................18
3.2 Connectors...........................................................................................19
3.2.1 Data Contacts/Local Bus..................................................................19
3.2.2 Power Jumper Contacts/Field Supply ..............................................20
3.2.3 CAGE CLAMP®Connectors.............................................................22
3.3 Display Elements..................................................................................23
3.4 Schematic Diagram ..............................................................................24
3.5 Technical Data .....................................................................................25
3.5.1 Device Data .....................................................................................25
3.5.2 Power Supply...................................................................................25
3.5.3 Communication................................................................................25
3.5.4 Outputs ............................................................................................25
3.5.5 Connection Type..............................................................................26
3.5.6 Climatic Environmental Conditions...................................................26
3.6 Approvals .............................................................................................27
3.7 Standards and Guidelines ....................................................................29
4Process Image.........................................................................................30
5Mounting..................................................................................................31
5.1 Mounting Sequence..............................................................................32
5.2 Inserting and Removing Devices ..........................................................32
5.2.1 Inserting the I/O Module...................................................................32
5.2.2 Removing the I/O Module ................................................................34
6Connect Devices .....................................................................................35
6.1 Connecting a Conductor to the CAGE CLAMP®...................................35
6.2 Connection Examples...........................................................................36

4 Table of Contents WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
7Use in Hazardous Environments ...........................................................37
7.1 Marking Configuration Examples ..........................................................38
7.1.1 Marking for Europe According to ATEX and IECEx..........................38
7.1.2 Marking for the United States of America (NEC) and Canada
(CEC)...............................................................................................42
7.2 Installation Regulations.........................................................................45
7.2.1 Special Notes including Explosion Protection...................................45
7.2.2 Special Notes Regarding ANSI/ISA Ex ............................................47
List of Figures ..................................................................................................48
List of Tables....................................................................................................49

WAGO I/O System 750 Notes about this Documentation 5
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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 750-537
(8DO 24V DC 0.5A, diagnostics).
The I/O module 750-537 shall only be installed and operated according to the
instructions in this manual and in the manual for the used fieldbus coupler or
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 or 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
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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 750 Series in Compliance with Underlying
Provisions
Fieldbus couplers, 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 controllers, the signals can also
be (pre-) processed.
The devices fulfill the requirements of protection type IP20 and are designed for
use in dry interior spaces. There is protection against finger injury and solid
impurities up to 12.5 mm diameter is assured; protection against water damage is
not ensured.
The devices represent open-type devices. They may only be installed in
enclosures (tool-secured enclosures or operating rooms) which fulfil the listed
requirements specified in the safety instructions in chapter “Safety Advice
(Precautions)”. Use without additional protective measures in environments within
which dust, corrosive fumes, gases or ionized radiation can occur is considered
improper use.
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

10 Important Notes WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
the section “Device Description” > “Standards and Guidelines” in the manual for
the used device.
Appropriate housing (per 2014/34/EU) is required when operating the WAGO I/O
System 750 in hazardous environments. Please observe the installation
regulations! Please note that a prototype test certificate must be obtained that
confirms the correct installation of the system in a housing or switch cabinet.
The implementation of safety functions such as EMERGENCY STOP or safety
door monitoring must only be performed by the F I/O modules within the modular
WAGO I/O System 750. Only these safe F I/O modules ensure functional safety
in accordance with the latest international standards. WAGO's interference-free
output modules can be controlled by the safety function.
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. These
modules contain no parts that can be serviced or repaired by the user. The
following actions will result in the exclusion of liability on the part of WAGO
Kontakttechnik GmbH & Co. KG:
• Repairs,
• Changes to the hardware or software that are not described in the
operating instructions,
• Improper use of the components.
Further details are given in the contractual agreements. Please send your
request for modified and new hardware or software configurations directly to
WAGO Kontakttechnik GmbH & Co. KG.
2.1.4.1 Disposal
2.1.4.1.1 Electrical and Electronic Equipment
Electrical and electronic equipment may not be disposed of
with household waste. This also applies to products without
this symbol.
Electrical and electronic equipment contain materials and substances that can be
harmful to the environment and health. Electrical and electronic equipment must
be disposed of properly after use.
WEEE 2012/19/EU applies throughout Europe. Directives and laws may vary
nationally.

WAGO I/O System 750 Important Notes 11
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
Environmentally friendly disposal benefits health and protects
the environment from harmful substances in electrical and
electronic equipment.
• Observe national and local regulations for the disposal of electrical and
electronic equipment.
• Clear any data stored on the electrical and electronic equipment.
• Remove any added battery or memory card in the electrical and
electronic equipment.
• Have the electrical and electronic equipment sent to your local
collection point.
Improper disposal of electrical and electronic equipment can be harmful to the
environment and human health.
2.1.4.1.2 Packaging
Packaging contains materials that can be reused.
PPWD 94/62/EU and 2004/12/EU packaging guidelines apply throughout
Europe. Directives and laws may vary nationally.
Environmentally friendly disposal of the packaging protects the environment and
allows sustainable and efficient use of resources.
• Observe national and local regulations for the disposal of packaging.
• Dispose of packaging of all types that allows a high level of recovery,
reuse and recycling.
Improper disposal of packaging can be harmful to the environment and wastes
valuable resources.

12 Important Notes WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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 device in only one suitable enclosure!
The device is an open system. Install the device in a suitable enclosure. This
enclosure must:
• Guarantee that the max. permissible degree of pollution is not exceeded.
• Offer adequate protection against contact.
• Prevent fire from spreading outside of the enclosure.
• Offer adequate protection against UV irradiation.
• Guarantee mechanical stability
• Restrict access to authorized personnel and may only be opened with tools
Ensure disconnect and overcurrent protection!
The device is intended for installation in automation technology systems.
Disconnect protection is not integrated. Connected systems must be protected by
a fuse.
Provide suitable disconnect and overcurrent protection on the system side!
Ensure a standard connection!
To minimize any hazardous situations resulting in personal injury or to avoid
failures in your system, the data and power supply lines shall be installed
according to standards, with careful attention given to ensuring the correct
terminal assignment. Always adhere to the EMC directives applicable to your
application.

WAGO I/O System 750 Important Notes 13
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
Power from SELV/PELV power supply only!
All field signals and field supplies connected to this I/O module (750-537) must
be powered from SELV/PELV power supply(s)!
Inadequate wire cross sections can cause temperature increases!
To avoid increasing thermal risks, only use conductor cross-sections sufficient for
the required maximum load current. The conductor cross-sections specified in
the technical data refer exclusively to the mechanical connection capacity of the
clamping points.
System supply only with appropriate fuse protection!
Without overcurrent protection, the electronics can be damaged.
For 24 V system supply input voltage an external fuse, rated max. 2 A, slow
acting, min. 30 VDC shall be used.
Field supply only with appropriate fuse protection!
Without overcurrent protection, the electronics can be damaged.
For 24V field supply input voltage an external fuse, rated max. 10 A, slow acting,
min. 30 VDC shall be used.
Do not exceed maximum values via power contacts!
The maximum current that can flow through the power jumper contacts is 10 A.
The power jumper contacts can be damaged and the permissible operating
temperature can be exceeded by higher current values.
When configuring the system, do not exceed the permissible maximum current
value. If there is a higher power requirement, you must use an additional supply
module to provide the field voltage.

14 Important Notes WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
Do not exceed the maximum total current for I/O modules (5 VDC) via data
contacts!
The maximum permissible total current for internal system supply of the I/O
modules may not be exceeded. The permissible total current is specified in the
technical data of the head station and power supply. The data contacts for
internal system supply can be damaged and the permissible operating
temperature can be exceeded by higher values.
When configuring the system, do not exceed the permissible total current. If there
is a higher power requirement, you must use an additional supply to provide the
system voltage (5 VDC)!
Ensure proper contact with the DIN-rail!
Proper electrical contact between the DIN-rail and device is necessary to
maintain the EMC characteristics and function of the device.
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts).
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 housing and soiled contacts with propanol.
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.

WAGO I/O System 750 Important Notes 15
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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.

16 Device Description WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
3 Device Description
The 750-537 (8DO 24V DC 0.5A, diagnostics) Digital Output Module transmits
binary control signals from the automation device to the connected actuators
(e.g., solenoid valves, contactors, transmitters or other electrical loads).
These output modules can recognize a short circuit to ground, a line break and
an overload in either channel.
The module has eight output channels. Eight 1-conductor actuators may be
directly connected to the module. The actuators can be connected using
connection DO 1 … DO 8.
Use field side connection modules!
Where required, use the appropriate field side connection modules for power
supply to the actuators.
The assignment of the connections is described in the “Connectors” section.
Connection examples are shown in section “Connect Devices” > … >
“Connection Example(s)”.
Limit all induced voltage!
The electronic components of the I/O module can be damaged by the induced
voltage produced when inductive loads are de-activated.
An appropriate protection circuit, e.g., a recovery diode, must be installed in
parallel to the load to limit this induced voltage.
The output channels are electrically short-circuit-protected.
The I/O module outputs provide high-side switching. If the signal status of an
output channel is at “high” the 24 V potential for field power will be switched to
the appropriate output connection.
The supply voltage for the field side is derived from an adjacent supply module
by means of power jumper contacts.
Provide for overload protection!
Overloading can damage the electronic components of the I/O module.
A fused supply module (750-601) must be installed upstream of the I/O module
to protect it against overloading!
The status of the two output channels is indicated via green status LEDs. A color
change to red signals an open circuit, overload or a short circuit.
The meaning of the LEDs is described in the “Display Elements” section.

WAGO I/O System 750 Device Description 17
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
The I/O module 750-537 (8DO 24V DC 0.5A, diagnostics) receives the 24 V
voltage supply for the field level from an upstream I/O module or from the
fieldbus coupler/controller via blade-formed power jumper contacts. It then
provides these potentials to subsequent I/O modules via spring-formed power
jumper contacts.
Do not exceed maximum values via power contacts!
The maximum current that can flow through the power jumper contacts is 10 A.
The power jumper contacts can be damaged and the permissible operating
temperature can be exceeded by higher current values.
When configuring the system, do not exceed the permissible maximum current
value. If there is a higher power requirement, you must use an additional supply
module to provide the field voltage.
In the event of an overload, short circuit or line break, an error bit per channel is
set in the input process image. Using this bit, the master control can identify the
error. After rectifying the error, the error bit is reset in the input image and the
error LED goes off.
The field voltage and the system voltage are electrically isolated from each other.
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.
The I/O module 750-537 can be used with all fieldbus couplers/controllers of the
WAGO I/O System 750.

18 Device Description WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
3.1 View
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
Power jumper contacts
“Device Description” > “Connectors”
6
Release tab
“Mounting” > “Inserting and Removing
Devices”

WAGO I/O System 750 Device Description 19
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
3.2 Connectors
3.2.1 Data Contacts/Local 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 local bus. The
contacting for the local bus consists 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!
Pay attention to potential equalization from the environment!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge. When handling the devices, please ensure that
environmental factors (personnel, work space and packaging) are properly
equalized. Do not touch any conducting parts, e.g., data contacts.

20 Device Description WAGO I/O System 750
750-537 8DO 24V DC 0.5A, diagnostics
Manual
Version 1.2.0
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. Do not touch the blade contacts.
The I/O module 750-537 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 4: 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 (U
v
) for field supply
Do not exceed maximum values via power contacts!
The maximum current that can flow through the power jumper contacts is 10 A.
The power jumper contacts can be damaged and the permissible operating
temperature can be exceeded by higher current values.
When configuring the system, do not exceed the permissible maximum current
value. If there is a higher power requirement, you must use an additional supply
module to provide the field voltage.