WAGO 750-477 User manual

Fieldbus Independent
I/O Modules
2 AI AC/DC 0-10 V, Differential
Inputs
750-477
Manual
Version 1.0.3

ii • General
WAGO-I/O-SYSTEM 750
I/O Modules
Copyright 2006 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 correctness and com-
pleteness of this documentation. However, as errors can never be fully ex-
cluded, we would appreciate any information or ideas at any time.
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 trademark or patent protected.

Content • iii
WAGO-I/O-SYSTEM 750
I/O Modules
Content
1Important Comments ................................................................................. 4
1.1 Legal Principles........................................................................................4
1.1.1 Copyright ............................................................................................. 4
1.1.2 Personnel Qualification ....................................................................... 4
1.1.3 Intended Use ........................................................................................ 4
1.2 Symbols .................................................................................................... 5
1.3 Number Notation...................................................................................... 5
1.4 Safety Notes ............................................................................................. 6
1.5 Scope ........................................................................................................ 6
2I/O Modules ................................................................................................. 7
2.1 Analog Input Modules.............................................................................. 7
2.1.1 750-477 [2 AI AC/DC 0-10 V, Differential Inputs]............................ 7
2.1.1.1 View................................................................................................ 7
2.1.1.2 Description...................................................................................... 7
2.1.1.3 Display Elements ............................................................................ 8
2.1.1.4 Schematic Diagram......................................................................... 9
2.1.1.5 Technical Data .............................................................................. 10
2.1.1.6 Process Image ...............................................................................11

4 • Important Comments
Legal Principles
WAGO-I/O-SYSTEM 750
I/O Modules
1 Important Comments
To ensure fast installation and start-up of the units described in this manual,
we strongly recommend that the following information and explanations are
carefully read and abided by.
1.1 Legal Principles
1.1.1 Copyright
This manual is copyrighted, together with all figures and illustrations
contained therein. Any use of this manual which infringes the copyright
provisions stipulated herein, is not permitted. Reproduction, translation and
electronic and photo-technical archiving and amendments require the written
consent of WAGO Kontakttechnik GmbH & Co. KG. Non-observance will
entail the right of claims for damages.
WAGO Kontakttechnik GmbH & Co. KG reserves the right to perform
modifications allowed by technical progress. In case of grant of a patent or
legal protection of utility patents all rights are reserved by WAGO
Kontakttechnik GmbH & Co. KG. Products of other manufacturers are always
named without referring to patent rights. The existence of such rights can
therefore not be ruled out.
1.1.2 Personnel Qualification
The use of the product detailed in this manual is exclusively geared to
specialists having qualifications in PLC programming, electrical specialists or
persons instructed by electrical specialists who are also familiar with the valid
standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability
resulting from improper action and damage to WAGO products and third party
products due to non-observance of the information contained in this manual.
1.1.3 Intended Use
For each individual application, the components supplied are to work with a
dedicated hardware and software configuration. Modifications are only
permitted within the framework of the possibilities documented in the
manuals. All other changes to the hardware and/or software and the non-
conforming use of the components entail the exclusion of liability on part of
WAGO Kontakttechnik GmbH & Co. KG.
Please direct any requirements pertaining to a modified and/or new hardware
or software configuration directly to WAGO Kontakttechnik GmbH & Co.
KG.

Important Comments • 5
Symbols
WAGO-I/O-SYSTEM 750
I/O Modules
1.2 Symbols
Danger
Always abide by this information to protect persons from injury.
Warning
Always abide by this information to prevent damage to the device.
Attention
Marginal conditions must always be observed to ensure smooth operation.
ESD (Electrostatic Discharge)
Warning of damage to the components by electrostatic discharge. Observe
the precautionary measure for handling components at risk.
Note
Routines or advice for efficient use of the device and software optimization.
More information
References on additional literature, manuals, data sheets and INTERNET
pages
1.3 Number Notation
Number Code Example Note
Decimal 100 normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100'
Within ',
Nibble separated with dots

6 • Important Comments
Safety Notes
WAGO-I/O-SYSTEM 750
I/O Modules
1.4 Safety Notes
Warning
Switch off the system prior to working on bus modules!
In the event of deformed contacts, the module in question is to be replaced, as
its functionality can no longer be ensured on a long-term basis.
The components are not resistant against materials having seeping and
insulating properties. Belonging to this group of materials is: e.g. aerosols,
silicones, triglycerides (found in some hand creams).
If it cannot be ruled out that these materials appear in the component
environment, then additional measures are to be taken:
- installation of the components into an appropriate enclosure
- handling of the components only with clean tools and materials.
Attention
Cleaning of soiled contacts may only be done with ethyl alcohol and leather
cloths. Thereby, the ESD information is to be regarded.
Do not use any contact spray. The spray may impair the functioning of the
contact area.
The WAGO-I/O-SYSTEM 750 and its components are an open system. It
must only be assembled in housings, cabinets or in electrical operation
rooms. Access must only be given via a key or tool to authorized qualified
personnel.
The relevant valid and applicable standards and guidelines concerning the
installation of switch boxes are to be observed.
ESD (Electrostatic Discharge)
The modules are equipped with electronic components that may be destroyed
by electrostatic discharge. When handling the modules, ensure that the
environment (persons, workplace and packing) is well grounded. Avoid
touching conductive components, e.g. gold contacts.
1.5 Scope
This manual describes the Analog Input Module 750-477
2 AI AC/DC 0-10 V, Differential Inputs of the modular WAGO-I/O-SYSTEM
750.
Handling, assembly and start-up are described in the manual of the Fieldbus
Coupler. Therefore this documentation is valid only in the connection with the
appropriate manual.

750-477 [2 AI AC/DC 0-10 V, Differential Inputs] • 7
View
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Analog Input Modules
2.1.1 750-477 [2 AI AC/DC 0-10 V, Differential Inputs]
2-Channel Analog Input Module (AC/DC 0-10 V, differential inputs)
2.1.1.1 View
+E1 +E2
13 14
C
D
B
A
SS
750-477
-E1 -E2
+AI 2
Power jumper contacts
Data contacts
Function AI 2
Function AI 1
+AI 1
Error AI 2
Error AI 1
Shield
(screen)
Shield
(screen)
-AI 1 -AI 2
Fig. 2.1.1-1: View g047700e
2.1.1.2 Description
The analog input module receives AC and DC voltages of values 0-10 Vrms.
The module has two differential input channels and can receive differential
signals via the connections +AI 1 and -AI 1 or +AI 2 and -AI 2.
The Shield (screen) is directly connected to the DIN rail. A capacitive
connection is made automatically when snapped onto the DIN rail.
The input signal is measured for each channel galvanically separated to the
system level as rms value of the voltage and displayed with a resolution of
1 mV.
The maximum value of the voltage must not exceed 20 V.
The operational readiness and trouble-free internal data bus communication of
the channels are indicated via a green Function LED. Overrange of the
measuring range or input open is indicated via a red error LED.
Any configuration of the input modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.

8 • 750-477 [2 AI AC/DC 0-10 V, Differential Inputs]
Display Elements
WAGO-I/O-SYSTEM 750
I/O Modules
The voltage supply is done via system voltage.
The field side supply voltage of 24 V and 0 V for the input module is derived
from adjacent I/O modules or from a supply module.The field supply voltage
is passed on separately galvanically to following modules without own use.
The supply voltage for the field side is made automatically through the
individual I/O modules by means of power jumper contacts.
Warning
The maximum current of the internal power jumper contacts is 10 A. When
configuring the system it is important not to exceed the maximum/sum
current. However, if such a case should occur, another supply module must be
added.
The analog input module 750-477 can be used with all couplers/controllers of
the WAGO-I/O-SYSTEM 750 (except for the economy types 750-320, -323, -
324 and -327).
2.1.1.3 Display Elements
LED Channel Meaning State Function
off
No operational readiness or the
internal data bus communication is
interrupted
A
green
Function
AI 1
on
Operational readiness and trouble-
free internal data bus
communication
off Normal operation
B
red
1
Error
AI 1 on Overrange of the admissible
measuring range
off
No operational readiness or the
internal data bus communication is
interrupted
C
green
Function
AI 2
on
Operational readiness and trouble-
free internal data bus
communication
off Normal operation
13 14
C
D
B
A
D
B
C
A
Fig. 2.1.1-2: Display
Elements g041802x
D
red
2
Error
AI 2 on Overrange of the admissible
measuring range

750-477 [2 AI AC/DC 0-10 V, Differential Inputs] • 9
Schematic Diagram
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.4 Schematic Diagram
750-477
1
2
3
4
5
6
7
8
Shield
(screen)
Logic
Function
Error
Shield
(screen)
+Al
10nF
A
D
270
10nF
-Al
W
120 k
W
+AI 1 +AI 2
24V
0V
-AI 2
-AI 1
Fig. 2.1.1-3: Schematic diagram g047701e

10 • 750-477 [2 AI AC/DC 0-10 V, Differential Inputs]
Technical Data
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.5 Technical Data
Module Specific Data
Number of inputs 2
Voltage supply via system voltage DC /DC
Current consumption typ. (internal) 80 mA
Signal voltage 0 V... 10 V r.m.s. (peak value 20 V)
Internal resistance 120 kΩ
Resolution 16 bits internal (1 LSB = 1mV)
Conversion time typ. 200 ms
Measuring error 25°C <±0.1 % of full scale value
Temperature coefficient <±110 ppm /K of full scale value
Measuring error over whole temp.
range
<±0.6 % of full scale value
Voltage resistance DC 500V (channel/channel or channel/system)
Voltage via power jumper contacts DC 24 V
Bit width 2 x 16 bits data
2 x 8 bits control/status (option)
Process data 0,0 V corresponds to 0x0000
20 V DC corresponds to 0x4E20
Dimensions W x H* x L
* from upper edge of 35 DIN rail
12 mm x 64 mm x 100 mm
Weight ca. 80 g
Standards and Regulations (cf. Chapter 2.2 of the Coupler/Controller Manual)
EMC-Immunity to interference (CE) acc. to EN 50082-2 (96)
EMC-Emission of interference (CE) acc. to EN 50081-1 (93)
Approvals (cf. Chapter 2.2 of the Coupler/Controller Manual)
CULUS (UL508)
Conformity Marking
More Information
Detailed references to the approvals are listed in the document "Overview
Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM
ELECTRONICC Tools and Docs (Item-No.: 0888-0412)
or in the internet under:
www.wago.com !Documentation !WAGO-I/O-SYSTEM 750 !
System Description

750-477 [2 AI AC/DC 0-10 V, Differential Inputs] • 11
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.6 Process Image
The analog input module 750-477 transmits 16-bit measured values and
8 optional status bits per channel.
The digitalized measured value is transmitted in a data word (16 bits) as input
byte 0 (low) and input byte 1 (high) into the process image of the coupler/
controller.
This value is represented with a 16 bit (1 LSB = 1 mV) resolution on
bit B0 ... B14.
Some fieldbus systems can process input channel status information by means
of a status byte.
This status byte can be displayed via the starting tool WAGO-I/O-CHECK 2.
However, processing via the coupler/controller is optional, which means that
accessing or parsing the status information depends on the fieldbus system.
Attention
The representation of the process data of some I/O modules or their
variations in the process image depends on the fieldbus coupler/controller
used. Please take this information as well as the particular design of the
respective control/status bytes from the section "Fieldbus Specific Design of
the Process Data" included in the description concerning the process image
of the corresponding coupler/controller.
For the standard module 750-477, the input voltage ranging from 0 V to 20 V
is scaled on the numerical values ranging from 0x0000 to 0x4E20.
Process values of module 750-477
numerical valueInput voltage
Ur.m.s. binary
Status-
byte
LED
Error
0 V – 10 V Measured value
hex. dec.
hex. AI 1, 2
0.0 '0000.0000.0000.0000' 0x0000 0 0x00 off
2.5 '0000.1001.1100.0100' 0x09C4 2500 0x00 off
5.0 '0001.0011.1000.1000' 0x1388 5000 0x00 off
7.5 '0001.1101.0100.1100' 0x1D4C 7500 0x00 off
10.0 '0010.0111.0001.0000' 0x2710 10000 0x00 off
12.5 '0011.0000.1101.0100' 0x30D4 12500 0x00 off
15.0 '0011.1010.1001.1000' 0x3A98 15000 0x00 off
17.5 '0100.0100.0101.1100' 0x445C 17500 0x00 off
20.0 '0100.1110.0010.0000' 0x4E20 20000 0x00 off
>20.0 '0100.1110.0010.0000' 0x4E20 20000 0x42 on

WAGO Kontakttechnik GmbH & Co. KG
Postfach 2880 • D-32385 Minden
Hansastraße 27 • D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Internet: http://www.wago.com