WAGO 750-632 User manual

Manual
WAGO I/O System 750/753
750-632(/xxx-xxx)
Proportional Valve Module
Version 1.3.1, valid from FW/HW-Version 01/01

2 WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
© 2023 WAGO GmbH & Co. KG
All rights reserved.
WAGO GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 844 169
E-Mail: inf[email protected]
Web: www.wago.com
Technical Support
Phone: [phone] – 4 45 55
Fax: [phone] – 84 45 55
E-Mail: s[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 750/753 Table of Contents 3
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
Table of Contents
1Notes about this Documentation ...........................................................7
1.1 Validity of this Documentation ..............................................................7
1.2 Copyright ............................................................................................7
1.3 Symbols..............................................................................................8
1.4 Number Notation ...............................................................................10
1.5 Font Conventions ..............................................................................10
2Important Notes ...................................................................................11
2.1 Legal Bases ......................................................................................11
2.1.1 Subject to Changes.......................................................................11
2.1.2 Personnel Qualifications ................................................................11
2.1.3 Use of the 750 Series in Compliance with Underlying Provisions.....11
2.1.4 Technical Condition of Specified Devices .......................................12
2.1.4.1 Disposal ...................................................................................12
2.1.4.1.1 Electrical and Electronic Equipment ......................................12
2.1.4.1.2 Packaging............................................................................13
2.2 Safety Advice (Precautions) ...............................................................14
3Technology of Proportional Valves .....................................................17
4Device Description...............................................................................18
4.1 View..................................................................................................21
4.2 Connectors........................................................................................22
4.2.1 Data Contacts/Local Bus ...............................................................22
4.2.2 Power Jumper Contacts/Field Supply.............................................23
4.2.3 Push-in CAGE CLAMP®Connectors ..............................................24
4.2.3.1 Push-in CAGE CLAMP®Connectors 750-632 ............................24
4.2.3.2 Push-in CAGE CLAMP®Connectors 750-632/000-100...............25
4.3 Display Elements...............................................................................26
4.4 Schematic Diagram ...........................................................................28
4.4.1 Schematic Diagram 750-632..........................................................28
4.4.2Schematic Diagram 750-632/000-100 ............................................29
4.5 Technical Data ..................................................................................30
4.5.1 Device Data ..................................................................................30
4.5.2 Power Supply................................................................................30
4.5.3 Communication .............................................................................30
4.5.4 Inputs ...........................................................................................30
4.5.5 Outputs.........................................................................................31
4.5.6 Wiring ...........................................................................................32
4.5.7 Environmental Conditions..............................................................32
4.6 Approvals..........................................................................................33
4.7 Standards and Guidelines..................................................................34
5Function Description ...........................................................................35
5.1 Operating Modes...............................................................................35
5.1.1 Operating Mode with One Valve.....................................................35
5.1.2 Operating Mode with Two Valves...................................................36
5.2 Specifying the Setpoint Value.............................................................37
5.2.1 Specifying the Setpoint Value: Operating Mode with One Valve ......37

4 Table of Contents WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
5.2.2 Specifying Setpoint Value: Operating Mode with Two Valves ..........38
5.2.3 Specifying the Setpoint Value: Operating Mode with Two Valves,
Coil Control: Two Coils, Unidirectional (3-wire) (750-632/000-100
only ..............................................................................................38
5.3 Functions for the Setpoint Value Control.............................................39
5.3.1 “Automatic mode”..........................................................................39
5.3.2 “Jog Mode” ...................................................................................40
5.3.3 “Tip Mode” ....................................................................................41
5.3.4 “HOLD”.........................................................................................42
5.3.5 “STOP” .........................................................................................43
5.3.6 End Stop Behavior ........................................................................44
5.3.6.1 End Stop Behavior in “Automatic Mode”.....................................44
5.3.6.1.1 Approach End Stop Value.....................................................45
5.3.6.1.2 Hold Current Value (“Freeze”)...............................................47
5.3.6.2 End Stop Behavior in “JOG Mode” and “TIP Mode” ....................48
5.3.6.2.1 Approach End Stop Value.....................................................48
5.3.6.2.2 Hold Current Value (“Freeze”)...............................................50
5.3.7 Substitute Value Strategy ..............................................................51
5.3.7.1 Approach Substitute Value ........................................................51
5.3.7.2 Leave Substitute Value Strategy after an Error...........................51
5.3.7.3 Manual Mode in Case of Error (Emergency Operation)...............52
5.4 Digital Inputs .....................................................................................53
5.4.1 Generating Setpoint Values ...........................................................54
5.5 Overview of the Internal Information Flow ...........................................54
5.5.1 Function Block: Ramp Generator ...................................................56
5.5.2 Function Block: Linearization .........................................................58
5.5.3 Function Block: Valve Adjustment ..................................................59
5.5.4 Definition of “Overlap”....................................................................59
5.5.4.1 Exemplary Depiction of the Characteristic Curve Compensation .61
5.5.4.2 Function Block: Nominal Current ...............................................61
5.5.5 Function Block: Dither Generator ...................................................62
5.5.6 Current Outputs for Valve Coils......................................................64
6Process Image .....................................................................................65
6.1 All Fieldbuses (except PROFIBUS and PROFINET)............................65
6.1.1 Operating Mode with One Valve.....................................................65
6.1.2 Operating Mode with Two Valves...................................................65
6.2 PROFIBUS and PROFINET...............................................................66
6.2.1 Operating Mode with One Valve.....................................................66
6.2.2 Operating Mode with Two Valves...................................................66
6.3 Control and Status Bytes ...................................................................66
6.4 Representation of Target and Actual Values .......................................70
7Mounting ..............................................................................................71
7.1 Mounting Sequence...........................................................................72
7.2 Inserting and Removing Devices ........................................................72
7.2.1 Inserting the I/O Module ................................................................72
7.2.2 Removing the I/O Module ..............................................................73

WAGO I/O System 750/753 Table of Contents 5
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
8Connect Devices ..................................................................................75
8.1 Connecting a Conductor to the Push-in CAGE CLAMP®......................75
8.2 Power Supply for Marine Applications.................................................76
8.3 Connection Examples 750-632...........................................................77
8.3.1 Connection Example 1: 2 Valves (2-Wire) ......................................77
8.3.2 Connection Example 2: 1 Valve (4-Wire)........................................77
8.3.3 Connection Example 3: 1 Valve (3-Wire)........................................78
8.4 Connection Examples 750-632/000-100 .............................................79
8.4.1 Connection Example 1: 2 Valves (3-Wire) ......................................79
8.4.2 Connection Example 2: 1 Valve (3-Wire), 1 Valve (2-Wire)..............79
9Commissioning....................................................................................81
9.1 Configuration and Parameterization with WAGO-I/O-CHECK .............81
9.1.1 Parameterization Dialog ................................................................83
9.1.1.1 Toolbar.....................................................................................84
9.1.1.1.1 Main Menu ...........................................................................84
9.1.1.1.2 Application Menu..................................................................86
9.1.1.2 Navigation Area ........................................................................87
9.1.1.3 Application Area........................................................................87
9.1.1.3.1 “Operation Mode” Menu Item ................................................88
9.1.1.3.2 “Module Parameters” Menu Item...........................................90
9.1.1.3.3 “Digital Inputs” Menu Item.....................................................92
9.1.1.3.4 “Ramp Settings” Menu Item ..................................................93
9.1.1.3.5 “Dither Generator” Menu Item ...............................................95
9.1.1.3.6 “Valve Adjustment” Menu Item ..............................................96
9.1.1.3.7 “Linearization” Menu Item .....................................................97
9.1.1.3.8 “Position” Menu Item.............................................................98
9.1.1.4 Diagnostics Area.......................................................................99
9.1.1.5 State Bar ..................................................................................99
10 Diagnostics ........................................................................................100
10.1 Range Overrun by the Setpoint Value...............................................100
10.2 Range Overrun by the Current Controller..........................................100
10.3 Interference at the Local Bus............................................................100
10.4 Changing the Configuration..............................................................100
10.5 Undervoltage, Short Circuit, Wire Break, Overtemperature................101
10.5.1 Undervoltage ..............................................................................101
10.5.2 Short Circuit................................................................................102
10.5.3 Wire Break..................................................................................102
10.5.4 Overtemperature.........................................................................102
10.5.5 Switching Outputs Back On .........................................................103
10.6 Diagnostics via LEDs.......................................................................104
10.7 Diagnostics via Process Image.........................................................105
11 Appendix............................................................................................106
11.1 Mailbox 2.0 Transmission Method ....................................................106
11.1.1 Message.....................................................................................106
11.1.2 Transmission Channel.................................................................107
11.1.2.1 The Handshake Byte...............................................................107
11.1.3 Communication Phases...............................................................108
11.1.3.1 Synchronization ......................................................................108

6 Table of Contents WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
11.1.3.1.1 Mailbox Commands............................................................109
11.1.3.1.2 Acknowledgement ..............................................................109
11.1.3.1.3 Signaling............................................................................110
11.1.3.1.4 Finite Automation ...............................................................111
11.1.3.2 Data Exchange.......................................................................111
11.1.3.2.1 Example.............................................................................113
11.2 Protocols Supported by Mailbox 2.0 .................................................114
11.2.1 Protocol 0x80 (Parameter Access)...............................................114
11.2.2 Protocol 0x81 (Diagnostics) .........................................................115
11.3 Diagnostics via Mailbox....................................................................117
11.3.1 Channel Error..............................................................................117
11.3.2 General Errors ............................................................................119
11.3.3 Communication Errors.................................................................120
11.4 Parameter, Reference......................................................................122
11.4.1 Channel-Independent Parameters................................................122
11.4.1.1 Table 30 (Valve Configuration) ................................................122
11.4.1.2 Table 31 (Status) ....................................................................123
11.4.1.3 Table 32 (Module Monitoring)..................................................123
11.4.1.4 Tables 33, 34 (DI1, DI2) ..........................................................124
11.4.1.5 Table 40 (Additional Module Parameters..................................125
11.4.2.1 Channel-Dependent Parameters .............................................126
11.4.2.2 Tables 50, 51 (Process Data Handling, Valve 1, Valve 2) .........126
11.4.2.3 Tables 52, 53 (Output Stage, Valve 1, Valve 2) ........................127
11.4.2.4 Tables 54, 55 (Status Valve 1, Valve 2) ...................................128
11.4.2.5 Tables 56, 57 (Ramp Generator, Valve 1, Valve 2)...................129
11.4.2.6 Tables 58, 59 (Characteristic Curve Adjustment, Valve 1,
Valve 2)..................................................................................130
11.4.2.7 Tables 60, 61 (Valve Adjustment, Valve 1, Valve 2)..................132
11.4.2.8 Table 62, 63 (Dithering Valve 1, Valve 2) .................................133
11.4.2.9 Tables 68, 69 (Current Controller, Valve 1, Valve 2) .................134
11.4.2.10 Tables 72, 73 (Process Variables, Valve 1, Valve 2).................134
11.5 Number Representation...................................................................135
11.5.1Setpoint Value.............................................................................135
11.5.2 Actual Value................................................................................135
12 Use in Hazardous Environments .......................................................137
12.1 Marking Configuration Examples ......................................................138
12.1.1 Marking for Europe According to ATEX and IECEx.......................138
12.1.2 Marking for the United States of America (NEC) and Canada
(CEC) .........................................................................................142
12.2 Installation Regulations....................................................................145
12.2.1 Special Notes including Explosion Protection ...............................145
12.2.2 Special Notes Regarding ANSI/ISA Ex.........................................147
List of Figures.............................................................................................148
List of Tables ..............................................................................................150

WAGO I/O System 750/753 Notes about this Documentation 7
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 750-632 (Proportional
Valve Module) and the variants listed in the table below.
Table 1: Versions
Item No./Version
Description
750-632
Proportional Valve Module
750-632/000-100
Proportional Valve Module 2-3L
The I/O module 750-632 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 GmbH & Co. KG, Minden, Germany. Non-observance
will involve the right to assert damage claims.

8 Notes about this Documentation WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 750/753 Notes about this Documentation 9
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).

10 Notes about this Documentation WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
1.4 Number Notation
Table 2: 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 3: 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 750/753 Important Notes 11
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 GmbH & Co. KG reserves the right to provide for any alterations or
modifications. WAGO 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 ≥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

12 Important Notes WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 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 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 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 750/753 Important Notes 13
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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.

14 Important Notes WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 a 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 750/753 Important Notes 15
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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.
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.

16 Important Notes WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
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 750/753 Technology of Proportional Valves 17
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
3 Technology of Proportional Valves
Proportional valves can be used to control the throughput of liquids or gases. The
throughput is determined by a lifting armature that is pressed on the valve seat
by a spring. The valve is thus closed in the inactive state. A further component of
the proportional valve is an electromagnet that consists of one or more coils. This
magnet functions in a direction opposite that of the lifting armature. The force
applied by the electromagnet is proportional to the current supplied. By regulating
the current flow, the position of the lifting armature and thus the throughput in the
proportional valve can be controlled.
Proportional valves are available in different versions. Essential differences
include, among others:
• the number of coils,
• the maximum possible throughput, and
• the electrical current that must be supplied.
Proportional valve modules can control proportional valves very precisely. They
are installed upstream of each proportional valve in use. During operation, they
generate the current which adjusts the respective proportional valve to the
desired throughput. In addition, they can offer expanded functions, such as a
setpoint value control by means of a ramp generator or dithering for static
compensation.
The following figure shows the information flow during interaction of the individual
technical components:
Figure 1: Information Flow in the Proportional Hydraulics

18 Device Description WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
4 Device Description
The I/O module serves to control proportional valves. The I/O module has two
outputs with switchable dithering that can be current-controlled via pulse width
modulation. A unidirectionally functioning coil or a bidirectionally functioning coil
for a valve can be connected at each output. The I/O module can be set to the
valve characteristics using parameters. Thus, for example, operating ranges or
valve characteristic curves can be individually set.
In addition, the I/O module offers an adjustable setpoint ramp function. It is
therefore possible to parameterize the characteristics of the rising or falling
ramps. It is a given that the I/O module has two digital inputs that can, for
example, monitor threshold value switches.
The I/O module can be configured and parameterized via:
• WAGO-I/O-CHECK or
• Function blocks

WAGO I/O System 750/753 Device Description 19
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
The 750-632 module can be used with the fieldbus couplers and controllers of
the WAGO I/O System 750 of the specified version or higher listed in the
“Compatibility list” table.
Table 4: Compatibility List 750-632
Bus System
Fieldbus
Couplers/Controllers Item No. Firmware
PROFINET
Fieldbus coupler
750-375
03
750-377
03
PROFIBUS
Fieldbus coupler
750-333
17*)
ETHERNET
Fieldbus coupler
750-341
08
750-342
17
750-352
04
Fieldbus controller
750-841
19
750-842
18
750-843
02
750-852
01
750-871
07
750-872
03
750-873
03
750-880
04
750-881
04
750-882
04
750-884
04
750-885
05
DeviceNet
Fieldbus coupler
750-306
4K
ECO fieldbus coupler
750-346
10
Fieldbus controller
750-806
10
CANopen
Fieldbus coupler
750-337
19
750-338
19
ECO fieldbus coupler
750-347
08
750-348
08
Fieldbus controller
750-837
14
750-838
14
LonWorks®
Fieldbus controller
750-819
09
KNX
Fieldbus controller
750-849
05
750-889
07
BACnet
Fieldbus controller
750-830
03
750-831
07
Modbus®
Fieldbus coupler
750-315/300-000
01
750-316/300-000
01
Fieldbus controller
750-815/300-000
01
750-816/300-000
01
EtherCat
Fieldbus coupler
750-354
02
sercos
Fieldbus coupler
750-351
04

20 Device Description WAGO I/O System 750/753
750-632 Proportional Valve Module
Manual
Version 1.3.1, valid from FW/HW-Version 01/01
Table 4: Compatibility List 750-632
Bus System
Fieldbus
Couplers/Controllers
Item No. Firmware
Various
PFC200
750-820x
02
I/O-IPC
758-870/000-11x
08
758-874/000-11x
08
758-875/000-11x
08
758-876/000-11x
08
*) The abbreviated parameter set is supported in firmware 18 or higher.