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Use in Hazardous Environments

Classifications meeting the NEC 500

WAGO-I/O-SYSTEM

750

I/O

Modules

3.4.3 Temperature

classes

Electrical components for explosive areas are differentiated by temperature
classes:

Temperature classes

Maximum
surface temperature

Ignition temperature
of the combustible materials

450 °C

> 450 °C

300 °C

> 300 °C to 450 °C

T2A

280 °C

> 280 °C to 300 °C

T2B

260 °C

> 260 °C to 280 °C

T2C

230 °C

>230 °C to 260 °C

T2D

215 °C

>215 °C to 230 °C

200 °C

>200 °C to 215 °C

T3A

180 °C

>180 °C to 200 °C

T3B

165 °C

>165 °C to 180 °C

T3C

160 °C

>160 °C to 165 °C

135 °C

>135 °C to 160 °C

T4A

120 °C

>120 °C to 135 °C

100 °C

>100 °C to 120 °C

85 °C

> 85 °C to 100 °C

Содержание 750-585

Страница 1: ...Fieldbus Independent I O Modules 2 AO 0 20 mA EEx i 750 585 Manual Version 1 0 3 ...

Страница 2: ...0 571 8 87 5 55 Fax 49 0 571 8 87 85 55 E Mail support wago com 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 documentation wago com We wish to point out that the software and hardware terms as well as the trademarks of companie...

Страница 3: ... 1 1 5 Technical Data 10 2 1 1 6 Process Image 12 2 1 1 6 1 Standard Data Format 12 3 Use in Hazardous Environments 13 3 1 Foreword 13 3 2 Protective measures 13 3 3 Classification meeting CENELEC and IEC 13 3 3 1 Divisions 13 3 3 2 Explosion protection group 14 3 3 3 Unit categories 15 3 3 4 Temperature classes 15 3 3 5 Types of ignition protection 16 3 4 Classifications meeting the NEC 500 17 3 ...

Страница 4: ...nufacturers 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 WAG...

Страница 5: ...peration 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 nor...

Страница 6: ...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 c...

Страница 7: ... the WAGO I O SYSTEM 750 is to be done in zone 2 or in non hazardous environments The module has two output channels and enables for example the direct wiring of two 2 conductor actuators to the connections AO 1 and 0V or AO 2 and 0V The intrinsically safe signals are transmitted via AO 1 or AO 2 The input channels of a module have a common ground and a shield screen connection S The Shield screen...

Страница 8: ... Modules End module Electronic Field Field Potential 2 Potential 1 The supply voltage for the field side is made automatically through the individual I O modules by means of power jumper contacts Note If the employment of further DC 24 V EEx i Supply modules is necessary for reasons of extent of utilization four Separation modules 750 616 must guarantee the distance between the intrinsically safe ...

Страница 9: ...ta bus communication off No operational readiness or the internal data bus communication is interrupted 13 14 15 16 Function AO 1 Function AO 2 Fig 2 1 1 2 Display Elements g058502x green 2 Function AO 2 on Operational readiness and trouble free internal data bus communication 2 1 1 4 Schematic Diagram AO 1 AO 2 24 V 0 V Shield screen AO 24 V 0 V Logic Function Shield screen 750 585 1 2 3 4 5 6 7 ...

Страница 10: ... of full scale value Temperature coefficient 0 01 K of full scale value Power consumption Pmax 1 5 W Power loss Pv 0 9 W Isolation 375 V Field System Input current typ field 19 mA load 2 x 20 mA Bit width 2 x 16 bits data 2 x 8 bits control status option Dimensions mm W x H x L 24 x 64 x 100 from upper edge of 35 DIN rail Weight ca 105 g Standards and Regulations cf Chapter 2 2 of the Coupler Cont...

Страница 11: ...TEM 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 Explosion Protection Ex directive 94 9 EC EN 50014 EN 50020 EN 50021 Marking II 3 2 GD EEx nA ib IIC IIB T4 Safety Data circuit U0 27 3 V I0 57 5 mA P0 392 mW Line characteristic linear EEx ia IIC EEx ia IIB L0 C0 L0 C0 Rea...

Страница 12: ...g by means of a status byte As the returned status byte of this output module is always zero it will not be parsed 2 1 1 6 1 Standard Data Format For the standard module 750 585 the output current ranging from 0 mA to 20 mA is scaled on the numerical values ranging from 0x0000 to 0x7FFF Process values of module 750 585 numerical value Output current binary Status byte 0 20 mA Output value hex dec ...

Страница 13: ... secondary explosion protection comes into play Following is a detailed description of such secondary measures 3 3 Classification meeting CENELEC and IEC The specifications outlined here are valid for use in Europe and are based on the following standards EN50 of CENELEC European Committee for Electrotechnical Standardization On an international scale these are reflected by the IEC 60079 standards...

Страница 14: ...eas can expect the rare or short term occurrence of an explosive atmosphere 0 h 10 h year 3 3 2 Explosion protection group In addition the electrical components for explosive areas are subdivided into two groups Group I Group I includes electrical components for use in fire damp endangered mine structures Group II Group II includes electrical components for use in all other explosive environments ...

Страница 15: ...II Zone 22 Explosive environment by dust 3 3 4 Temperature classes The maximum surface temperature for electrical components of explosion protection group I is 150 C danger due to coal dust deposits or 450 C if there is no danger of coal dust deposit In line with the maximum surface temperature for all ignition protection types the electrical components are subdivided into temperature classes as f...

Страница 16: ...EC 79 5 Sand encapsulation Zone 1 2 EEx d EN 50 018 IEC 79 1 Pressure resistant encapsulation Zone 1 2 EEx e EN 50 019 IEC 79 7 Increased safety Zone 1 2 EEx m EN 50 028 IEC 79 18 Cast encapsulation Zone 1 2 EEx i EN 50 020 unit EN 50 039 system IEC 79 11 Intrinsic safety Zone 0 1 2 EEx n EN 50 021 IEC 79 15 Electrical components for zone 2 see below Zone 2 Ignition protection n describes exclusiv...

Страница 17: ... Electric Code are valid for North America 3 4 1 Divisions The Divisions describe the degree of probability of whatever type of dangerous situation occurring Here the following assignments apply Explosion endangered areas due to combustible gases fumes mist and dust Division 1 Encompasses areas in which explosive atmospheres are to be expected occasionally 10 h 1000 h year as well as continuously ...

Страница 18: ...re classes Maximum surface temperature Ignition temperature of the combustible materials T1 450 C 450 C T2 300 C 300 C to 450 C T2A 280 C 280 C to 300 C T2B 260 C 260 C to 280 C T2C 230 C 230 C to 260 C T2D 215 C 215 C to 230 C T3 200 C 200 C to 215 C T3A 180 C 180 C to 200 C T3B 165 C 165 C to 180 C T3C 160 C 160 C to 165 C T4 135 C 135 C to 160 C T4A 120 C 120 C to 135 C T5 100 C 100 C to 120 C ...

Страница 19: ...28 14 55 C max ambient LISTED 22ZA AND 22XM 2 4 2 4 6 2 1 0 1 0 2 0 3 II 3 G KEMA 01ATEX1024 X EEx nA II T4 Explosion protection group Unit category Community symbol for explosion protected electrical components Approval body and or number of the examination certificate E conforming with European standards Ex explosion protected component n Type of ignition Extended identification Explosion protec...

Страница 20: ... 3 G KEMA 01ATEX1024 X EEx nA II T4 CL I DIV 2 Grp A B C D op temp code T4A 24V DC AWG 28 14 55 C max ambient 2 4 2 4 6 4 1 0 0 0 2 0 3 LISTED 22ZA AND 22XM CL I DIV 2 Grp ABCD optemp code T4A Explosion group gas group Explosion protection group condition of use category Area of application zone Temperature class Fig 3 5 2 1 Example for lateral labeling of bus modules 750 400 2 channel digital inp...

Страница 21: ...rpts from additional VDE regulations DIN VDE 0100 Installation in power plants with rated voltages up to 1000 V DIN VDE 0101 Installation in power plants with rated voltages above 1 kV DIN VDE 0800 Installation and operation in telecommunication plants including information processing equipment DIN VDE 0185 lightning protection systems The USA and Canada have their own regulations The following ar...

Страница 22: ...n non hazardous areas C Installation connection addition removal or replacement of modules fieldbus connectors or fuses may only take place when the system supply and the field supply are switched off or when the area is known to be non hazardous D Ensure that only approved modules of the electrical operating type will be used The Substitution or Replacement of modules can jeopardize the suitabili...

Страница 23: ...Use in Hazardous Environments 23 Installation regulations WAGO I O SYSTEM 750 I O Modules ...

Страница 24: ...WAGO Kontakttechnik GmbH Co KG Postfach 2880 D 32385 Minden Hansastraße 27 D 32423 Minden Phone 05 71 8 87 0 Fax 05 71 8 87 1 69 E Mail info wago com Internet http www wago com ...

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