WAGO 750-461, 750-461/000-002, 750-461/000-003, 750-461/000-004, 750-461/000-005 User guide

Fieldbus Independent
I/O Modules

Analog Input Modules for RTD's
750-461, (/xxx-xxx)

Manual

Version 1.1.2

ii • General

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: [e-mail]
Web: http://www.wago.com

Technical Support

Phone: [phone] – 5 55
Fax: [phone] – 85 55

E-Mail: [e-mail]

Every conceivable measure has been taken to ensure the correctness and com­pleteness of this documentation. However, as errors can never be fully ex­cluded, we would appreciate any information or ideas at any time.

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 trademark or patent protected.

WAGO-I/O-SYSTEM 750
I/O Modules

Content • iii

Content

1 Important 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

2 I/O Modules .................................................................................................7

2.1 Analog Input Modules..............................................................................7

2.1.1 Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)......7

2.1.2 750-461, (/xxx-xxx) [2 AI Pt100/ RTD] .............................................8

2.1.2.1 View................................................................................................8

2.1.2.2 Variations........................................................................................8

2.1.2.3 Description......................................................................................9

2.1.2.4 Display Elements ..........................................................................10

2.1.2.5 Schematic Diagram.......................................................................11

2.1.2.6 Technical Data ..............................................................................12

2.1.2.7 Process Image ............................................................................... 13

2.1.2.7.1 I/O Modules for Pt Resistance Sensors......................................... 14

2.1.2.7.1.1 Pt 100 .......................................................................................15

2.1.2.7.1.2 Pt 1000 .....................................................................................15

2.1.2.7.1.3 Pt 100 with Status Information for S5-FB250 in Data Word...16

2.1.2.7.2 I/O Modules for Ni Resistance Sensors........................................ 17

2.1.2.7.2.1 Ni 100.......................................................................................17

2.1.2.7.2.2 Ni 1000.....................................................................................18

2.1.2.7.3 I/O Modules for Resistance Measuring ........................................ 19

2.1.2.8 Adjustable 750-461/003-000 Variation ........................................20

2.1.3 750-461/020-000 [2 AI NTC 20kOhm]............................................. 22

2.1.3.1 View..............................................................................................22

2.1.3.2 Description....................................................................................23

2.1.3.3 Display Elements ..........................................................................24

2.1.3.4 Schematic Diagram.......................................................................24

2.1.3.5 Technical Data ..............................................................................25

2.1.3.6 Process Image ............................................................................... 26

WAGO-I/O-SYSTEM 750
I/O Modules

4 • Important Comments Legal Principles

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 non­conforming 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.

WAGO-I/O-SYSTEM 750
I/O Modules

Symbols • 5
Intended Use

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

WAGO-I/O-SYSTEM 750
I/O Modules

6 • Important Comments
Safety Notes

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.

1.5 Scope

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.

This manual describes the Analog Input Modules 750-461, (/xxx-xxx)
Analog Input Modules for RTD's 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.

WAGO-I/O-SYSTEM 750
I/O Modules

Analog Input Modules • 7 Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)

2 I/O Modules

2.1 Analog Input Modules

2.1.1 Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)

I/O Module 750-461

Function PT100/

RTD

Channels 2 2 2 2 2

Measuring
range

Counter depth 2 x 16 bits

-200 °C ...
+850 °C

Data
2 x 8 bits
Control/
Status
(option)

750-461/

000-002

Resistance
Measuring
10R-1k2

10 Ω ...
1,2 kΩ

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

750-461/

000-003

PT1000/
RTD

-200 °C ...
+850 °C

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

750-461/

000-004

Ni 100/
RTD

-60 °C ...
+250 °C

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

750-461/

000-005

Ni 1000/
RTD

-60 °C ...
+250 °C

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

I/O Module

Function PT100/

750-461/

000-006

RTD/
high
precision

750-461/

000-007

Resistance
Measuring
10R-5k0

750-461/

000-200

PT100/
RTD/
with
status
informatio
ns

750-461/

003-000

PT100/
RTD/
adjustable

750-461/

020-000

NTC
20kOhm

Channels 2 2 2 2 2

Measuring
range

Counter depth 2 x 16 bits

WAGO-I/O-SYSTEM 750
I/O Modules

-200 °C ...
+850 °C

Data
2 x 8 bits
Control/
Status
(option)

10 Ω ...
5,0 kΩ

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

-200 °C ...
+850 °C,

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

-200 °C ...
+850 °C

2 x 16
bits Data
2 x 8 bits
Control/
Status
(option)

-30 °C ...
+130 °C

2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

8 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD] View

2.1.2 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]

2-Channel Analog Input Module for RTDs
2- or 3-wire connection

2.1.2.1 View

13 14

Function AI 1

Error AI 1

+R 1

A

B

+R1 +R2

RL1 RL2

C

D

Function AI 2
Error AI 2

Data contacts

+R 2

2-conductor

3-conductor

Fig. 2.1.2-1: 2-Channel Analog Input Module 750-461 g046100e

2.1.2.2 Variations

Item-No. Designation Description

Pt resistance sensors

750-461 2 AI PT100/RTD 2-Channel Analog Input Module, Pt 100

750-461/000-003 2 AI PT1000/RTD 2-Channel Analog Input Module, Pt 1000

750-461/000-006 2 AI PT100/RTD/

RL 1

-R 1

Shield

(screen)

-R1 -R2

SS

750-461

high precision

RL 2

-R 2

Shield
(screen)

Measuring range: -200 °C ... +850 °C

Measuring range: -200 °C ... +850 °C

2-Channel Analog Input Module, Pt 100
Measuring range: -200 °C ... +850 °C

750-461/000-200 2 AI PT100/RTD/

With status information

2-Channel Analog Input Module, Pt 100
Measuring range: -200 °C ... +850 °C,
With status information for S5-FB250

Ni resistance sensors

750-461/000-004 2 AI Ni 100/RTD 2-Channel Analog Input Module, Ni 100

Measuring range: -60 °C ... +250 °C

750-461/000-005 2 AI Ni 1000/RTD 2-Channel Analog Input Module, Ni 1000

Measuring range: -60 °C ... +250 °C

WAGO-I/O-SYSTEM 750
I/O Modules

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 9
Description

Item-No. Designation Description

Resistance measuring

750-461/000-002 2 AI Resistance

750-461/000-007 2 AI Resistance

Operating mode configurable with WAGO-I/O-CHECK

750-461/003-000 2 AI PT100/RTD/

2.1.2.3 Description

The 750-461 analog input module and its 750-461/xxx-xxx variations allow
Pt or Ni Resistive Temperature Devices, RTDs, to be measured in the field.
It can also be used to measure resistances in the field.

Depending on the operating mode, the resistance value is converted to a
temperature or directly sent out by the module. A microprocessor within the
module is used for converting and linearizing the measured resistance value
into a numeric value proportional to the temperature of the selected resistance
sensor.

Measuring, 10R-1k2

Measuring, 10R-5k0

Adjustable

2-Channel Analog Input Module,
Resistance measuring,
Measuring range: 10 Ω ... 1,2 kΩ

2-Channel Analog Input Module,
Resistance measuring,
Measuring range: 10 Ω ... 5,0 kΩ

2-Channel Analog Input Module,
Adjustable; Factory preset: Pt 100
Measuring range: -200 °C ... +850 °C

The operating mode of the 750-461/003-000 variation can be set by using the
WAGO-I/O-CHECK 2 start-up and diagnostic tool (Item No.: 759-302). The
default setting is Pt 100. After setting the parameters, the module behaves like
the version with the selected operating mode.

The operating mode of the 750-461 basic module described in this manual is
for a Pt 100 resistance sensor.
The analog input module is a 2- to 3-conductor device and has 2 input
channels. Two devices may be directly connected to the module.

For example, two 3-wire sensors can be connected either to +R1, RL1 and –
R1 or to +R2, RL2 and –R2.
For the connection of 2-wire sensors, putting of a bridge is necessary between
+R1 and RL1 or +R2 and RL2.

The shield (screen) is directly connected to the DIN rail. A capacitive
connection is made automatically when snapped onto the DIN rail.

An optocoupler is used for electrical isolation between the bus and the field
side.

The operational readiness and trouble-free internal data bus communication of
the channels are indicated via a green function LED. A broken wire, short­circuit or overrange are indicated by a red error LED per channel.

WAGO-I/O-SYSTEM 750
I/O Modules