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Rockwell Automation Publication 1794-IN049E-EN-P - May 2022

FLEX I/O 2-input Frequency Modules Installation Instructions

European Hazardous Location Approval

The following applies to products marked 

 

 II 3 G:

• Are intended for use in potentially explosive atmospheres as defined by European Union Directive 2014/34/EU and has been found to comply with the Essential Health and 

Safety Requirements relating to the design and construction of Category 3 equipment intended for use in Zone 2 potentially explosive atmospheres, given in Annex II to this 

Directive. 

• Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 60079-15 and EN 60079-0.

• Are Equipment Group II, Equipment Category 3, and comply with the Essential Health and Safety Requirements relating to the design and construction of such equipment 

given in Annex II to EU Directive 2014/34/EU. See the EU Declaration of Conformity at 

rok.auto/certifications 

for details.

• The type of protection is Ex nA IIC T4 Gc according to EN 60079-15.

• Comply to Standards EN 60079-0:2012, EN 60079-15:2010, reference certificate number DEMKO 14 ATEX 1342501X.

• Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists, or air are unlikely to occur, or are likely to occur only infrequently and for short 

periods. Such locations correspond to Zone 2 classification according to ATEX directive 2014/34/EU.

IEC Hazardous Location Approval

The following applies to products with IECEx certification:

• Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists, or air are unlikely to occur, or are likely to occur only infrequently and for 

short periods. Such locations correspond to Zone 2 classification to IEC 60079-0.

• The type of protection is Ex nA IIC T4 Gc according to IEC 60079-15.

• Comply to Standards IEC 60079-0: 2011, IEC 60079-15: 2010 reference IECEx certificate number IECEx UL 14.0066X.

WARNING: Special Conditions for Safe Use:

• This equipment is not resistant to sunlight or other sources of UV radiation.

• This equipment shall be mounted in an ATEX/IECEx Zone 2 certified enclosure with a minimum ingress protection rating of at least IP54 (in accordance with 

EN/IEC 60079-0) and used in an environment of not more than Pollution Degree 2 (as defined in EN/IEC 60664-1) when applied in Zone 2 environments. The 

enclosure must be accessible only by the use of a tool.

• This equipment shall be used within its specified ratings defined by Rockwell Automation.

• Provision shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 140% of the peak rated voltage when 

applied in Zone 2 environments.

• This equipment must be used only with ATEX/IECEx certified Rockwell Automation backplanes.

• Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this 

product.

• Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

• Earthing is accomplished through mounting of modules on rail.

• Devices shall be used in an environment of not more than Pollution Degree 2.

North American Hazardous Location Approval

The Following Information Applies When Operating This Equipment In 

Hazardous Locations.

Informations sur l’utilisation de cet équipement en environnements dangereux.

Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 

Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each 

product is supplied with markings on the rating nameplate indicating the 

hazardous location temperature code. When combining products within a system, 

the most adverse temperature code (lowest "T" number) may be used to help 

determine the overall temperature code of the system. Combinations of equipment 

in your system are subject to investigation by the local Authority Having 

Jurisdiction at the time of installation.

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu'à une utilisation en 

environnements de Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. 

Chaque produit est livré avec des marquages sur sa plaque d'identification qui indiquent le 

code de température pour les environnements dangereux. Lorsque plusieurs produits sont 

combinés dans un système, le code de température le plus défavorable (code de 

température le plus faible) peut être utilisé pour déterminer le code de température global 

du système. Les combinaisons d'équipements dans le système sont sujettes à inspection 

par les autorités locales qualifiées au moment de l'installation.

WARNING:

Explosion Hazard –

• Do not disconnect equipment unless power has been 

removed or the area is known to be nonhazardous. 

• Do not disconnect connections to this equipment unless 

power has been removed or the area is known to be 

nonhazardous. Secure any external connections that 

mate to this equipment by using screws, sliding latches, 

threaded connectors, or other means provided with this 

product.

• Substitution of components may impair suitability for 

Class I, Division 2.

AVERTISSEMENT:

Risque d’Explosion – 

• Couper le courant ou s'assurer que l'environnement est classé non 

dangereux avant de débrancher l'équipement.

• Couper le courant ou s'assurer que l'environnement est classé non 

dangereux avant de débrancher les connecteurs. Fixer tous les 

connecteurs externes reliés à cet équipement à l'aide de vis, 

loquets coulissants, connecteurs filetés ou autres moyens fournis 

avec ce produit.

• La substitution de composants peut rendre cet équipement 

inadapté à une utilisation en environnement de Classe I, Division 2.

Summary of Contents for Allen-Bradley 1794-IJ2

Page 1: ...Hazardous Location Approval 4 North American Hazardous Location Approval 4 Install Your Frequency Input Module 5 Connecting Wiring for the 1794 TB3G and 1794 TB3GS Terminal Base Unit 5 Resolution and...

Page 2: ...documenti elencati nella sezione Altre risorse riguardanti l installazione la configurazione ed il funzionamento dell apparecchiatura Gli utenti devono leggere e comprendere le istruzioni di installa...

Page 3: ...s nonhazardous before proceeding WARNING If you connect or disconnect wiring while the field side power is on an electrical arc can occur This could cause an explosion in hazardous location installati...

Page 4: ...ust be used only with ATEX IECEx certified Rockwell Automation backplanes Secure any external connections that mate to this equipment by using screws sliding latches threaded connectors or other means...

Page 5: ...d evenly to seat the module in the terminal base unit The module is seated when the latching mechanism 7 is locked into the module Connecting Wiring for the 1794 TB3G and 1794 TB3GS Terminal Base Unit...

Page 6: ...annel 1 A 11 A 12 A 7 A 5 A 3 A 8 A 10 A 12 6V AC Vortex A 2 A 1 A 3 A 13 A 14 A 12 3V AC Vortex A 2 A 0 A 3 A 13 A 15 A 12 Gate 24V DC IEC 1 Proximity 3 4 B 24 B 23 B 20 B 25 B 26 B 29 24V DC Contact...

Page 7: ...1 8 0 0002 200 0 0002 0 0225 0 0227 0 1 0 7 1 7 0 0001 500 0 00008 0 0225 0 02258 0 1 0 7 1 7 0 00004 1000 0 00004 0 0225 0 02254 0 1 0 7 1 7 0 00002 Table 2 Input Map Bit 15 14 13 12 11 10 09 08 07 0...

Page 8: ...module is in a Faulted condition internal error Table 3 Output Map Dec 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Oct 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0 0 CF SSM FR CH 0 Number of pulses to terminate...

Page 9: ...Logic Drive On Status OK Off Dark 24V Power Turned Off or 5V Logic Power Problem Solid Green Module OK Normal Operating Mode Solid Red Module Fault Outputs Disabled Table 5 Diagnostic Bit Definition...

Page 10: ...re off detection 0 4 mA for proximity encoder or contact switch with 50 k shunt resistor Frequency input impedance 5 k for 50 mV Extended Magnetic Pickup 5 k for 500 mV Magnetic Pickup 10 k for 3V Vor...

Page 11: ...0 1 2 yellow status indicators Out 0 Out 1 logic side Keyswitch Position 1 Wire size Determined by installed terminal base Wiring category 1 2 on signal ports 3 on power ports Wire type Shielded on s...

Page 12: ...ents EN 60079 15 Potentially Explosive Atmospheres Protection n II 3 G Ex nA IIC T4 Gc DEMKO 14 ATEX 1342501X IECEx IECEx System compliant with IEC 60079 0 General Requirements IEC 60079 15 Potentiall...

Page 13: ...Rockwell Automation Publication 1794 IN049E EN P May 2022 13 FLEX I O 2 input Frequency Modules Installation Instructions Notes...

Page 14: ...be collected separately from any unsorted municipal waste Rockwell Automation Support Use these resources to access support information Documentation Feedback Your comments help us serve your documen...

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