WAGO I/O-SYSTEM 750 User manual

Fieldbus Independent
I/O Modules
2 DO AC 230 V SSR, 3.0 A/ 30 s
750-522
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 tra-
demarks of companies used and/or mentioned in the present manual are gener-
ally 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 Digital Output Modules............................................................................7
2.1.1 750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s] ......................................7
2.1.1.1 View................................................................................................7
2.1.1.2 Description......................................................................................7
2.1.1.3 Display Elements ............................................................................9
2.1.1.4 Schematic Diagram.........................................................................9
2.1.1.5 Technical Data ..............................................................................10
2.1.1.6 Process image................................................................................11
2.1.2 Contact Protective Circuit for Relay Modules ..................................12

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 con-
tained therein. Any use of this manual which infringes the copyright provi-
sions stipulated herein, is not permitted. Reproduction, translation and elec-
tronic and photo-technical archiving and amendments require the written con-
sent 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 modi-
fications 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 special-
ists having qualifications in PLC programming, electrical specialists or per-
sons instructed by electrical specialists who are also familiar with the valid
standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability re-
sulting 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 per-
mitted 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 Kon-
takttechnik 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 insu-
lating properties. Belonging to this group of materials is: e.g. aerosols, sili-
cones, triglycerides (found in some hand creams).
If it cannot be ruled out that these materials appear in the component envi-
ronment, 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 envi-
ronment (persons, workplace and packing) is well grounded. Avoid touching
conductive components, e.g. gold contacts.
1.5 Scope
This manual describes the Digital Input Module 750-522
2 DO AC 230 V SSR, 3.0 A/ 30 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.

750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s] • 7
View
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Digital Output Modules
2.1.1 750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s]
2-Channel Digital Output Module AC 230 V
Solid State Relay 3.0 A for 30 s
2.1.1.1 View
15 16
15 16
C
D
B
A
LL
NN
13 14
13 14
C
D
B
A
LL
NN
750-522
DO 2
Power jumper contacts
Data contacts
Status DO 2
230V
N
Status DO 1
DO 1
Error DO 2
Error DO 1
Fig. 2.1.1-1: 2-Channel Digital Output Module 750-522 g052200e
2.1.1.2 Description
The electronic relay module 750-522 switches a supply voltage up to 230V
AC for connected actuators or AC loads.
The module has two output channels. Two actuators with ground (earth) wire
may be directly connected.
The module is equipped with two TRIACs as switching relays. The semicon-
ductor outputs of the TRIACs allow for the unlimited triggering of the actua-
tors while having no wear on the outputs
The TRIACs are non-floating, i.e. the fieldside voltage supply (35 VAC up to
230 V) is connected to each terminal of the relay and is fed in via the internal
power jumper contacts of an adjacent supply module.
By closing a relay, the field power applied is switched to the second relay con-
nection DO1 or DO2.
The control of the semiconductor outputs is fully isolated using the internal
system voltage. The outputs are switched at the zero cross.

8 • 750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s]
Description
WAGO-I/O-SYSTEM 750
I/O Modules
The switching status of the two relays is indicated via green status LEDs.
In addition, a red error-LED for either channel will show if there are any ther-
mal case of overload at the outputs.
In the event of an overload, each output has its own overload protection which
is realized via an internal temperature limit.
In case of an overload, one error bit per channel (bit 0 or bit 1) is set in the in-
put process image. The master control can identify the error with this bit.
The affected output is immediately switched off by the built-in thermal fuse
and the relay will open.
After the output connection has cooled down, the output is triggered again and
the relay will close.
Simultaneously, the error bit is reset in the process image and the error LED
goes off.
An optocoupler is used for electrical isolation between the bus and the field
side.
Any configuration of the output modules is possible when designing the field-
bus node. Grouping of module types is not necessary.
Attention
An additional supply module must be added for the field supply with AC 35 V
to 230 V.
The AC 35 V to 230 V supply voltage for the field side, the N (neutral con-
ductor) and the earth (ground) potential is made automatically through the in-
dividual 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 cur-
rent. However, if such a case should occur, another supply module must be
added.
Note
For the protection of relay coils and contacts, inductive loads must be damp-
ened with an effective protection circuit!
Examples of protection circuits can be seen in the section 2.1.2 "Contact
Protective Circuit for Relay Modules".
The output module 750-522 can be used with all couplers/controllers of the
WAGO-I/O-SYSTEM 750.

750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s] • 9
Display Elements
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.3 Display Elements
LED Channel Designation State Function
off Output DO 1: not activated
A1
green
Status
DO 1 on Output DO 1: activated
off Output DO 1: normal operation
B1
red
1
Error
DO 1 on Output DO 1: overload
off Output DO 2: not activated
A2
green
Status
DO 2 on Output DO 2: activated
off Output DO 2: normal operation
15 16
C
D
B
A
13 14
C
D
B
A
A1
B1
A2
B2
Fig. 2.1.1-2: Display
Elements g052202x
B2
red
2
Error
DO 2 on Output DO 2: overload
2.1.1.4 Schematic Diagram
DO 1 DO 2
230V
N
DO
230V
Status
N
&
Logic
Out
In
Error
MJ
J
U
1
2
3
4
5
6
7
8
1
2
3
4
6
7
8
5
750-522
Fig. 2.1.1-3: 2-Channel Digital Output Module 750-522 g052201e

10 • 750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s]
Technical Data
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.5 Technical Data
Module Specific Data
Number of outputs 2 make contacts
Current consumption typ. (internal) 40 mA
Switching voltage AC 35...230 V
Switching current nom. 0.5 A each channel
Switching current min. 50 mA
Switching current max. 3 A (< 30 s operating time) each channel
for a turn-on cycle of 1 hour
Surge current 18 A (100 ms); 30 A (10 ms)
Switching rate max. 50 Hz
Operating speed typ. 1.65 ms
Operating speed max. 15 ms
Leakage current typ. (off) typ. < 2.3 mA
Surge voltage protection AC 275 V (Varistor)
Isolation 3.0 kV (System/Field)
Internal bit with 2 bits in; 2 bits out
Dimensions (mm) W x H x L 24 x 64* x 100
* from upper edge of 35 DIN rail
Weight ca. 110 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)
CULUS (UL1604) Class I Div2 ABCD T4A
DEMKO II 3 GD EEx nA II T4
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 !Sys-
tem Description

750-522 [2 DO AC 230 V SSR, 3.0 A/ 30 s] • 11
Process image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.6 Process image
Input process values of module 750-522
Input bit B1 B0
Meaning Error*)
Channel 2
Error*)
Channel 1
*)Error bit goes high in case of an overload at the output
Output process values of module 750-522
Output bit B1 B0
Meaning controls DO 2*)
Channel 2
controls DO 1*)
Channel 1
*)DO 1, DO 2: Outputs switched into zero crossing

12 • Digital Output Modules
Contact Protective Circuit for Relay Modules
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2 Contact Protective Circuit for Relay Modules
Switching off inductive loads such as contactors and solenoid valves can gen-
erate transients with voltage peaks of up to several thousand volts. Very often,
these transients exceed the permissible limits specified in the EMC standards.
They must therefore be limited by using external circuits. Furthermore, they
cause an arc, which may destroy the switching contact, and have a significant
impact on the lifetime and safety of the relay.
The following protective circuits, which are directly connected to the source
of the interference in parallel with the consumer, have proved successful in
practice:
Load Protection Addi-
tional Off
Delay
Defined Induction
Voltage
Limitation
Bipolar
Effective
Attenuation
Advantages/Disadvantages
Diode
U
D
Load
g051211e
long yes (UD) no
Advantages:
- easy implementation
- cost-effective, reliable
- uncritical dimensioning
- low induction voltage
Disadvantages:
- attenuation only via load
resistor
- long off delay
Series connection
diode/zener diode
U
ZD
Load
g051212e
medium to
short yes (UZD) no
Advantages:
- uncritical dimensioning
Disadvantages:
- attenuation only above
UZD
Suppressor diode
U
ZD
Load
g051213e
medium to
short yes (UZD) yes
Advantages:
- cost-effective
- uncritical dimensioning
- limitation of positive)/
negative peaks
- suitable for A.C. voltage
Disadvantages:
- attenuation only above
UZD
Varistor
U
VDR
VDR
Load
g051214e
medium to
short yes (UVDR) yes
Advantages:
- high power absorption
- uncritical dimensioning
- suitable for A.C. voltage
Disadvantages:
- attenuation only above
UVDR
R/C combination
U
R
C
RC
Load
g051215e
medium to
short no yes
Advantages:
- HF attenuation via power
storage
- suitable for A.C. voltage
- level-independent attenua-
tion
Disadvantages:
- exact dimensioning re-
quired
- high inrush current

Digital Output Modules • 13
Contact Protective Circuit for Relay Modules
WAGO-I/O-SYSTEM 750
I/O Modules

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