Allen-Bradley FLEX Ex 1797-IRT8 Installation Instructions Manual Download Page 1

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Publication

1797-IN004G-EN-P - August 2017

Installation Instructions

FLEX Ex Thermocouple/RTD Input Module

Catalog Number 1797-IRT8

Contents

For Information About

See Page

Important User Information

Module Installation

Installation in Zone 1

Installation in Zone 22

European Communities (EC) Directive Compliance

Inputs

Indicators

Output Map

Fault Mode - Write Word 0

Add-on Filter Selections - Write Word 0

Reference Junction Selection - Write Word 0

RTD Offset Select - Write Word 2

Sensor Type Select - Write Word 1

Specifications

Entity Parameters

Summary of Contents for FLEX Ex 1797-IRT8

Page 1: ...formation 2 Module Installation 3 Installation in Zone 1 5 Installation in Zone 22 5 European Communities EC Directive Compliance 6 Inputs 8 Indicators 14 Output Map 15 Fault Mode Write Word 0 16 Add on Filter Selections Write Word 0 16 Reference Junction Selection Write Word 0 16 RTD Offset Select Write Word 2 17 Sensor Type Select Write Word 1 18 Specifications 19 Entity Parameters 23 ...

Page 2: ...associated with any particular installation Rockwell Automation Inc cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Automation Inc with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission ...

Page 3: ...tion This module must be used with a 1797 TB3 or 1797 TB3S intrinsically safe terminal base unit Component Identification 1 Keyswitch 5 Alignment Bar 2 Terminal Base Unit 6 Alignment Groove 3 Flexbus Connector 7 Latching Mechanism 4 Module 8 Cap Plug 1 2 3 4 5 6 7 Label Here or Under Here 8 40231 ...

Page 4: ...nto the module 6 Make certain that you only connect terminal base units to other intrinsi cally safe system modules or adapters to maintain the integrity of the intrinsically safe backplane ATTENTION This equipment is considered Group 1 Class A industrial equipment according to IEC CISPR Publication 11 Without appropriate precautions there may be potential difficulties ensuring electromagnetic com...

Page 5: ...ts type IVK2 ISRPI V8LC IVK2 ISRPI V8HYW or IVK2 ISPRI V16LC ensures the basic protection for the intrinsically safe apparatus of the FLEX Ex I O system for use in Zone 22 It corresponds with category 3D according to RL 94 9 EG and with the type label marked with the following information Pepperl Fuchs GmbH 68307 Mannheim IVK2 ISRPI V8LC or IVK2 ISRPI V8HYW or IVK2 ISRPI V16LC EX II 3 D Ex tD A22 ...

Page 6: ...s A EN 61000 6 2 2005 Electromagnetic Compatibility EMC Part 6 2 Generic Standards Immunity for Industrial Environments EN 61326 1 2013 Industrial Electrical Equipment For Measurement Control and Laboratory Use Industrial EMC Requirements WARNING These modules are designed so you can remove and insert them under power However take special care when removing or inserting modules in an active proces...

Page 7: ...6 reference certificate number DMT 98 ATEX E 023 X Are intended for use in areas in which explosive atmospheres caused by gases vapors mists or air are likely to occur occasionally Such locations correspond to Zone 1 or 2 classification according to ATEX directive 2014 34 EU IEC Hazardous Location Approval The following applies to products with the IECEx certification Are intended for use in areas...

Page 8: ...om a thermocouple TC or resistance temperature detector RTD Do not apply any nonintrinsically safe signals to this module When using an intrinsically safe electrical apparatus according to EN50020 the European directives and regulations must be followed The channels in this module are electrically connected to each other and have a common plus line IMPORTANT When interconnecting several lines you ...

Page 9: ...t the individual high signal input wiring to L terminals for each individual channel 2 6 10 and 14 on the 0 to 15 row A and terminals 19 23 27 and 31 on the 16 to 33 row B as indicated in the table below b connect the associated low signal to the corresponding terminals 3 7 11 and 15 on the 0 to 15 row A and terminals 20 24 28 and 32 on the 16 to 33 row B c connect cold junction compensation wirin...

Page 10: ...34 to 51 row C 5 If continuing power to the next terminal base unit connect a jumper from terminal 50 V on this base unit to terminal 34 on the next base unit 6 If continuing common to the next terminal base unit connect a jumper from terminal 51 V on this base unit to terminal 35 on the next base unit IMPORTANT Whenever you use thermocouple inputs you must use both cold junction compensators WARN...

Page 11: ... 13 14 15 4 17 18 19 20 5 21 22 23 24 6 25 26 27 28 7 29 30 31 32 V Terminals 34 and 50 V Terminals 35 and 51 1 Terminals 37 38 and 39 and 46 47 and 48 are for cold junction compensation with 38 and 47 chassis ground Connect CJC1 to terminal 5 or 22 CJC2 to terminal 12 or 29 2 Terminals 16 33 and 40 45 are chassis ground ATTENTION Do not use the unused terminals on this terminal base unit Using th...

Page 12: ...al Base Unit 16 34 1 2 0 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C Thermocouple Channel 4 2 Wire RTD Channel 1 3 Wire RTD Channel 2 4 Wire RTD Channel 3 1797 TB3 CJC cold junction compensation thermistor Attention Keep exposed area of inner conductor as short as possible 0 to 15 16 to 33 34 to 51 CJC CJC Bus Bar Ground or Shield Terminating Feedthrough 40621gm ...

Page 13: ... wire Shields must be terminated external to the module such as bus bars and shield terminating feed throughs 0 to 15 16 to 33 34 to 51 A B C Millivolt Source Millivolt Source Millivolt Source Millivolt Source 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 34 Attention Keep exposed area of inner conductor as short as possible 40622gm Bus Bar Ground or Shield Terminating Feedthrough 30820 M ...

Page 14: ...t Map Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word Read 0 Channel 0 Input Data 1 Channel 1 Input Data 2 Channel 2 Input Data 3 Channel 3 Input Data 4 Channel 4 Input Data 5 Channel 5 Input Data 6 Channel 6 Input Data 7 Channel 7 Input Data 8 Overrange Alarm Bits channel 0 bit 08 ch 1 bit 09 and so on Underrange Alarm Bits ch 0 bit 00 ch 1 bit01 and so on 9 Flt Alm ch 7 Flt Alm ch 6 Flt...

Page 15: ... Sensor Mode ch 4 7 Sensor Type Ch 4 7 TC RTD Ch 0 3 Sensor Mode Ch 0 3 Sensor Type Ch 0 3 2 RTD Offset ch 7 RTD Offset ch 6 RTD Offset ch 5 RTD Offset ch 4 RTD Offset ch 3 RTD Offset ch 2 RTD Offset ch 1 RTD Offset ch 0 3 Module command Module command data Bit 11 10 09 08 Data type for channels 0 7 0 0 0 0 C see note 0 0 0 1 F see note 0 0 1 0 K see note 0 0 1 1 32767 32767 0 1 0 0 0 65535 0101 t...

Page 16: ... 02 01 00 Definition 0 0 0 Hardware filtering only default filtering 0 0 1 40 Hz 25 ms 0 1 0 10 Hz 100 ms 0 1 1 4 Hz 250 ms 1 0 0 2 Hz 500 ms 1 0 1 1 Hz 1 s 1 1 0 0 5 Hz 2 s 1 1 1 0 2 Hz 5 s Bits 03 05 Reference Junction used when sensor is set to thermocouple and sensor mode is set to internal compensation Sets a fixed reference junction to compensate all thermocouple channels Bit 05 04 03 Refere...

Page 17: ...etween 2 channels RTD Mode 0 0 2 wire RTD no compensation 0 1 2 wire RTD with user compensation 1 0 3 wire RTD 1 1 4 wire RTD Bit 01 00 RTD Offset Select Bits Channel 0 03 02 RTD Offset Select Bits Channel 1 05 04 RTD Offset Select Bits Channel 2 07 06 RTD Offset Select Bits Channel 3 09 08 RTD Offset Select Bits Channel 4 11 10 RTD Offset Select Bits Channel 5 13 12 RTD Offset Select Bits Channel...

Page 18: ...00 Ω Nickel α 0 00618 U S 60 250 C 0 1 1 0 200 Ω Nickel α 0 00618 U S 60 200 C 0 1 1 1 120 Ω Nickel α 0 00672 U S 80 320 C 1 0 0 0 10 Ω Copper α 0 00427 U S 200 260 C 1001 1111 not used Thermocouple Type Bit 03 02 01 00 Sensor type for channels 0 3 Bit 11 10 09 08 Sensor type for channels 4 7 0 0 0 0 mV default 0 0 0 1 B 300 1800 C 572 3272 F 0 0 1 0 E 270 1000 C 454 1832 F 0 0 1 1 J 210 1200 C 34...

Page 19: ...IIC T4 Class I Division 1 Group A G T4 Input Type Suitable for Pt 100 Pt 200 Ni 100 Ni 120 Ni 200 10 Cu RTD thermocouple Type B E J K N R S T TXK XK L Configuration via internal bus Signal Input Range 0 485 Ω 40 100 mV Settling Time to 99 of Final Value 8 ms mV mode F thermocouple Open RTD Detection Out of range upscale reading Lead Resistance Compensation 15 W total Transfer Characteristics Accur...

Page 20: ...insically Safe 16 Position Male Female Flexbus Connector Ui 5 8V Ii 400 mA Li Negligible Ci 1 35 μF Isolation Path Input to Power Supply Input to Flexbus Input to Input Power Supply to Flexbus Isolation Type Galvanic to DIN EN60079 11 Galvanic to DIN EN60079 11 None Galvanic to DIN EN60079 11 Power Supply V V Intrinsically Safe Ui 9 5V dc Ii 1 A Li Negligible Ci Negligible Module Field side Power ...

Page 21: ...rtification CENELEC II 1 2G Ex ib ia IIC T4 II 1 D Ex iaD U C UL Class I Groups A B C and D Class II Groups E F and G Class III Hazardous Locations Class I Zone 1 AEx ib ia IIC T4 FM Intrinsically safe Class I Div 1 Groups A B C D T4 Associated Apparatus with intrinsically safe Connection Class I II III Div 1 Groups A G Intrinsically safe Class I Zone 1 AEx ib ia IIC T4 INMETRO BR Ex ia ib IIB IIC...

Page 22: ...ass I Zone 0 1 and 2 Hazardous Classified Locations UL 61010 UL Standard for Safety Electrical Equipment For Measurement Control and Laboratory Use Part 1 General Requirements CSA C22 2 No 157 92 Intrinsically Safe and Non Incendive Equipment for Use in Hazardous Locations CSA C22 2 No 30 M1986 Explosion Proof Enclosures for Use in Class I Hazardous Locations CSA E79 0 95 Electrical Apparatus for ...

Page 23: ...37 39 17 to 20 37 39 21 to 24 37 39 25 to 28 37 39 29 to 32 37 39 0 3 46 48 4 to 7 46 48 8 to 11 46 48 12 to 15 46 48 17 to 20 46 48 21 to 14 46 48 25 to 28 46 48 29 to 32 46 48 Protection Group Allowed Capacitance Allowed Inductance Lo Ro Ratio Uo 9V Io 37 mA Po 83 mW Ex ia IIB 40 μF 80 mH 1 7 mH Ω Ex ia IIC 4 9 μF 20 mH 0 4 mH Ω Protection Group Allowed Capacitance Allowed Inductance Lo Ro Ratio...

Page 24: ...s of Vt and It of the associated apparatus are less than or equal to Voc and Isc or Vmax and Imax of the intrinsically safe apparatus and the approved values of Ca and La of the associated apparatus are greater than Ci Ccable and Li Lcable respectively for the intrinsically safe apparatus Wiring Method Channel Terminals Voc V Isc mA Vt V It mA Groups Ca μF La mH 1 and 2 Any one channel for example...

Page 25: ...the National Electric Code ANSI NFPA 70 Article 504 and 505 or the Canadian Electric Code CSA C22 1 Part 1 Appendix F For additional information refer to ANSI ISA RP12 6 This module 1797 IRT8 must be used with terminal base 1797 TB3 or 1797 TB3S Terminals 36 and 49 shall not be connected WARNING Substitution of components may impair intrinsic safety AVERTISSEMENT La substitution de composant peut ...

Page 26: ...ay not have an I O module installed 1797 IRT8 Allen Bradley B A 7 PWR 6 5 4 3 2 1 0 2 8 Point RTD Thermocouple mV Input Module 42020 FLEX Ex Temperature Input I O Module Indicators Female Bus Connection Field Wiring Terminals Terminal Base Terminal Base Key Male Bus Connection Key Position for Terminal Base Insertion ...

Page 27: ...5V Isc 1 A To any IS device with Entity Concept parameters of Vmax Imax Ci Li appropriate for connection to associated apparatus with Entity Concept parameters listed in Table 2 ch0 ch1 ch2 ch3 ch4 ch5 ch6 ch7 29 30 H 1797 IRT8 16 Shield Connection Only 50 51 35 34 Female Bus Connector Vmax 5 8V Imax 400mA Ci 1350nF Li negligible Vmax 9 5V Imax 1A Ci negligible Li negligible Male Bus Connector 33 ...

Page 28: ... Class I II III Division 1 Hazardous Classified Locations FM C1 No 3615 1989 Explosionproof Electrical Equipment General Requirements FM C1 No 3810 1989 1995 Electrical and Electronic Test Measuring and Process Control Equipment ANSI NEMA 250 1991 Enclosures for Electrical Equipment Wiring Methods Wiring method 1 Each channel is wired separately Wiring method 2 Multiple channels in one cable provi...

Page 29: ...ble respectively for the intrinsically safe apparatus The internal capacitances Ci of the terminal base must be taken into account to verify the intrinsic safety Simple apparatus is defined as a device which neither generates nor stores more than 1 2V 0 1 A 20 μJ or 25 mW Wiring Method Channel Terminals Voc V Isc mA Vt V It mA Groups Ca μF La mH 1 and 2 Any one channel for example ch0 0 1 H 2 L 3 ...

Page 30: ...97 TB3 or 1797 TB3S Terminals 36 and 49 shall not be connected WARNING Substitution of components may impair intrinsic safety AVERTISSEMENT La substitution de composant peut compromettre la securite intrinseque 1797 IRT8 Allen Bradley B A 7 PWR 6 5 4 3 2 1 0 2 8 Point RTD Thermocouple mV Input Module FLEX Ex Temperature Input I O Module Indicators Female Bus Connection Field Wiring Terminals Termi...

Page 31: ...ces 1797 PS2N For connection to other modules refer to FLEX Ex System Reference Manual ch0 ch1 ch2 ch3 ch4 ch5 ch6 ch7 29 30 H 1797 IRT8 16 Shield Connection Only 50 51 35 34 Female Bus Connector Vmax 5 8V Imax 400mA Ci 1350nF Li negligible Vmax 9 5V Imax 1A Ci negligible Li negligible Male Bus Connector 33 40 41 42 43 44 45 31 L 32 25 26 H 27 L 28 21 22 H 23 L 24 17 18 H 19 L 20 12 13 H 14 L 15 8...

Page 32: ...ermocouple RTD Input Module Publication 1797 IN004G EN P August 2017 FLEX Ex is a trademark of Rockwell Automation Inc WARNING Avoid electrostatic charging ADVERTÊNCIA PREVENIR CONTRA OACÚMULO DE CARGA ELETROSTÁTICA ...

Page 33: ...FLEX Ex Thermocouple RTD Input Module 33 Publication 1797 IN004G EN P August 2017 Notes ...

Page 34: ...34 FLEX Ex Thermocouple RTD Input Module Publication 1797 IN004G EN P August 2017 Notes ...

Page 35: ...FLEX Ex Thermocouple RTD Input Module 35 Publication 1797 IN004G EN P August 2017 Notes ...

Page 36: ...al You can also contact a special Customer Support number for initial help in getting your module up and running New Product Satisfaction Return Rockwell tests all of its products to ensure that they are fully operational when shipped from the manufacturing facility However if your product is not functioning it may need to be returned Allen Bradley Rockwell Automation ControlLogix RSLinx TechConne...

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