WAGO 750-555 User manual

Manual
WAGO-I/O-SYSTEM 750
750-555
4AO 4
-20mA
4
-Channel Analog Output Module 4-20 mA
Version 1.2.1

2 WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
© 2018 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.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-555 4AO 4-20mA
Manual
Version 1.2.1
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
1.5Font 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
2.1.4.1 Disposal ......................................................................................10
2.2 Safety Advice (Precautions) .................................................................11
3Device Description..................................................................................13
3.1 View .....................................................................................................15
3.2 Connectors...........................................................................................16
3.2.1 Data Contacts/Local Bus..................................................................16
3.2.2 Power Jumper Contacts/Field Supply ..............................................17
3.2.3 CAGE CLAMP®Connectors.............................................................19
3.3 Display Elements..................................................................................20
3.4 Operating Elements..............................................................................20
3.5 Schematic Diagram..............................................................................21
3.6 Technical Data .....................................................................................22
3.6.1 Device Data .....................................................................................22
3.6.2 Power Supply...................................................................................22
3.6.3 Communication................................................................................22
3.6.4 Outputs............................................................................................22
3.6.5 Connection Type..............................................................................23
3.6.6 Climatic Environmental Conditions...................................................23
3.7 Approvals .............................................................................................24
3.8 Standards and Guidelines ....................................................................26
4Process Image.........................................................................................27
5Mounting..................................................................................................28
5.1 Mounting Sequence..............................................................................28
5.2 Inserting and Removing Devices..........................................................29
5.2.1 Inserting the I/O Module...................................................................29
5.2.2 Removing the I/O Module ................................................................30
6Connect Devices.....................................................................................31
6.1 Connecting a Conductor to the CAGE CLAMP®...................................31
6.2 Connection Example ............................................................................32

4 Table of Contents WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
7Use in Hazardous Environments ...........................................................33
7.1 Marking Configuration Examples..........................................................34
7.1.1 Marking for Europe According to ATEX and IECEx..........................34
7.1.2 Marking for America (NEC) and Canada (CEC)...............................38
7.2 Installation Regulations.........................................................................41
7.2.1 Special Notes Regarding Explosion Protection ................................41
7.2.2 Special Notes Regarding ANSI/ISA Ex ............................................43
List of Figures ..................................................................................................44
List of Tables....................................................................................................45

WAGO-I/O-SYSTEM 750 Notes about this Documentation 5
750-555 4AO 4-20mA
Manual
Version 1.2.1
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 750-555
(4AO 4-20mA).
The I/O module 750-555 shall only be installed and operated according to the
instructions in this manual and in the manual for the used fieldbus
coupler/controller.
Consider power layout of the WAGO-I/O-SYSTEM 750!
In addition to these operating instructions, you will also need the manual for the
used fieldbus coupler/controller, which can be downloaded at www.wago.com.
There, you can obtain important information including information on electrical
isolation, system power and supply specifications.
1.2 Copyright
This Manual, including all figures and illustrations, is copyright-protected. Any
further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and phototechnical
filing/archiving (e.g., photocopying) as well as any amendments require the
written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany.
Non-observance will involve the right to assert damage claims.

6 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
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
750-555 4AO 4-20mA
Manual
Version 1.2.1
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
750-555 4AO 4-20mA
Manual
Version 1.2.1
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
750-555 4AO 4-20mA
Manual
Version 1.2.1
2 Important Notes
This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To protect
your health and prevent damage to devices as well, it is imperative to read and
carefully follow the safety guidelines.
2.1 Legal Bases
2.1.1 Subject to Changes
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications. WAGO Kontakttechnik GmbH & Co. KG owns all
rights arising from the granting of patents or from the legal protection of utility
patents. Third-party products are always mentioned without any reference to
patent rights. Thus, the existence of such rights cannot be excluded.
2.1.2 Personnel Qualifications
All sequences implemented on WAGO-I/O-SYSTEM 750 devices may only be
carried out by electrical specialists with sufficient knowledge in automation. The
specialists must be familiar with the current norms and guidelines for the devices
and automated environments.
All changes to the coupler or controller should always be carried out by qualified
personnel with sufficient skills in PLC programming.
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with
Underlying Provisions
Fieldbus couplers, fieldbus controllers and I/O modules found in the modular
WAGO-I/O-SYSTEM 750 receive digital and analog signals from sensors and
transmit them to actuators or higher-level control systems. Using programmable
controllers, the signals can also be (pre-) processed.
The devices have been developed for use in an environment that meets the IP20
protection class criteria. Protection against finger injury and solid impurities up to
12.5 mm diameter is assured; protection against water damage is not ensured.
Unless otherwise specified, operation of the devices in wet and dusty
environments is prohibited.
Operating the WAGO-I/O-SYSTEM 750 devices in home applications without
further measures is only permitted if they meet the emission limits (emissions of
interference) according to EN 61000-6-3. You will find the relevant information in
the section “Device Description” > “Standards and Guidelines” in the manual for
the used fieldbus coupler/controller.
Appropriate housing (per 2014/34/EU) is required when operating the
WAGO-I/O-SYSTEM 750 in hazardous environments. Please note that a

10 Important Notes WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
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
Recycle metals, plastics and packaging materials.
Automation components used in the professional sector (B2B) must be properly
disposed of once no longer in use in accordance with the respective national
guidelines (e.g., European Community Directive WEEE 2012/19/EU).
Packaging of all types must be disposed of in such a way that a high level of
recovery, reuse and recycling is possible. PPWD 94/62/EU and 2004/12/EU
packaging guidelines apply throughout Europe.

WAGO-I/O-SYSTEM 750 Important Notes 11
750-555 4AO 4-20mA
Manual
Version 1.2.1
2.2 Safety Advice (Precautions)
For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any
installation, repair or maintenance work.
Install the device only in appropriate housings, cabinets or in electrical
operation rooms!
The WAGO-I/O-SYSTEM 750 and its components are an open system. As such,
install the system and its components exclusively in appropriate housings,
cabinets or in electrical operation rooms. Allow access to such equipment and
fixtures to authorized, qualified staff only by means of specific keys or tools.
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts), since the long-term functionality of device/module involved can no
longer be ensured.
Protect the components against materials having seeping and insulating
properties!
The components are not resistant to materials having seeping and insulating
properties such as: aerosols, silicones and triglycerides (found in some hand
creams). If you cannot exclude that such materials will appear in the component
environment, then install the components in an enclosure being resistant to the
above-mentioned materials. Clean tools and materials are imperative for
handling devices/modules.
Clean only with permitted materials!
Clean housing and soiled contacts with propanol.

12 Important Notes WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.
Avoid electrostatic discharge!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge when touched. Please observe the safety precautions
against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the
devices, please ensure that environmental factors (personnel, work space and
packaging) are properly grounded.

WAGO-I/O-SYSTEM 750 Device Description 13
750-555 4AO 4-20mA
Manual
Version 1.2.1
3 Device Description
The analog output module 750-555 (4AO 4-20mA) generates a standardized
signal of 4 mA … 20 mA for the field area.
The I/O module has 4 output channels, making direct wiring of four 2-wire
actuators possible.
The actuators are connected to CAGE CLAMP®connectors AO 1 and common
(ground) or AO 2, AO 3, AO 4 and respective common (ground).
The channels have a common ground potential.
The assignment of the connections is described in the “Connectors” section.
Connection examples are shown in section “Connect Devices” > … >
“Connection Example(s)”.
ΩΩ
Avoid any unacceptable combination of load impedance values!
The output load impedance values for an I/O module must always be situated
within a range of 0 Ω... 300 Ωor 300 Ω... 600 Ω.
The load impedance values are checked by the I/O module; any unacceptable
combination will result in an error message.
A green status LED indicates the operating status and error-free local bus
communication.
A red error LED indicates a wire break or an unacceptable combination of load
impedance values.
The meaning of the LEDs is described in the “Display Elements” section.
The voltage supply is done via the field supply.
The I/O module 750-555 (4AO 4-20mA) 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 current via power jumper contacts!
The maximum current to flow through the power jumper contacts is 10 A.
Greater currents can damage the contacts.
When configuring your system, ensure that this current is not exceeded.
If exceeded, insert an additional supply module.
The Output signal is electrically isolated and will be transmitted with a resolution
of 12 bits.

14 Device Description WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
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 750-555 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).

WAGO-I/O-SYSTEM 750 Device Description 15
750-555 4AO 4-20mA
Manual
Version 1.2.1
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”

16 Device Description WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
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. It is
comprised of 6 data contacts, which are available as self-cleaning gold spring
contacts.
Figure 2: Data Contacts
Do not place the I/O modules on the gold spring contacts!
Do not place the I/O modules on the gold spring contacts in order to avoid soiling
or scratching!
Ensure that the environment is well grounded!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge. When handling the devices, ensure that the environment
(persons, workplace and packing) is well grounded. Avoid touching conductive
components, e.g. data contacts.

WAGO-I/O-SYSTEM 750 Device Description 17
750-555 4AO 4-20mA
Manual
Version 1.2.1
3.2.2 Power Jumper Contacts/Field Supply
Risk of injury due to sharp-edged blade contacts!
The blade contacts are sharp-edged. Handle the I/O module carefully to prevent
injury.
The I/O module 750-555 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 (Uv) for field supply
Do not exceed maximum current via power jumper contacts!
The maximum current to flow through the power jumper contacts is 10 A.
Greater currents can damage the contacts.
When configuring your system, ensure that this current is not exceeded.
If exceeded, insert an additional supply module.

18 Device Description WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
Use supply modules for ground (earth)!
The I/O module has no power jumper contacts for receiving and transmitting the
earth potential. Use a supply module when an earth potential is needed for the
subsequent I/O modules.

WAGO-I/O-SYSTEM 750 Device Description 19
750-555 4AO 4-20mA
Manual
Version 1.2.1
3.2.3 CAGE CLAMP®Connectors
Figure 4: CAGE CLAMP®Connectors
Table 5: Legend for Figure “CAGE CLAMP®Connectors”
Channel
Designation
Connector
Function
1
AO 1
1
Output AO 1: Signal voltage
0 V
2
Output AO 1: Common (ground)
2
AO 2
5
Output AO 2: Signal voltage
0 V
6
Output AO 2: Common (ground)
3
AO 3
3
Output AO 3: Signal voltage
0 V
4
Output AO 3: Common (ground)
4
AO 4
7
Output AO 4: Signal voltage
0 V
8
Output AO 4: Common (ground)

20 Device Description WAGO-I/O-SYSTEM 750
750-555 4AO 4-20mA
Manual
Version 1.2.1
3.3 Display Elements
Figure 5: Display Elements
Table 6: Legend for Figure “Display Elements”
Designation
LED
State
Function
Function A Off
No operational readiness or the local bus
communication is interrupted
Green
Operational readiness and trouble free local bus
communication
Error B
Off
No error
Red
Overload or short circuit to ground in one of the
output channels
3.4 Operating Elements
The I/O module 750-555 has no operating elements.