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Rockwell Automation Allen-Bradley 1794-TB2, Installation Instructions Manual

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Rockwell Automation Allen-Bradley 1794-TB2 Installation Instructions Manual Download Page 7

Rockwell Automation Publication 1794-IN092F-EN-P - November 2021

7

FLEX I/O Terminal Base Units Installation Instructions

8.

Gently push the Flexbus connector into the side of the adapter to complete the backplane connection.

9.

See the installation instructions for specific wiring information for the module you are installing in this terminal base.

To install the next terminal base, repeat the preceding steps.

ATTENTION: 

When using FLEX I/O modules in a high-vibration installation, especially when mounting the DIN rail vertically, use DIN rail locks 

(Allen-Bradley catalog number 1492-EA35) to prevent accidental separation of the terminal block units.

A

B

A

C

DIN Rail

C

Summary of Contents for Allen-Bradley 1794-TB2

Page 1: ...s are not always available for each revision Topic Page Summary of Changes 1 Environment and Enclosure 3 Prevent Electrostatic Discharge 3 North American Hazardous Location Approval 4 European Hazardous Location Approval 4 IEC Hazardous Location Approval 4 Terminal Base Overview 5 Mount the Terminal Base Unit on a DIN Rail 6 Wire Connections for 1794 TB32 1794 TB32K 1794 TB32S 1794 TB32SK Terminal...

Page 2: ...sonnes formées selon le code de pratique en vigueur Si cet équipement est utilisé d une façon qui n a pas été définie par le fabricant la protection fournie par l équipement peut être compromise ATTENZIONE Prima di installare configurare ed utilizzare il prodotto o effettuare interventi di manutenzione su di esso leggere il presente documento ed i documenti elencati nella sezione Altre risorse rig...

Page 3: ...ING 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 installations Be sure that power is removed or the area is nonhazardous before proceeding ATTENTION This product is grounded through the DIN rail to chassis ground Use zinc plated chromate passivated steel DIN rail to assure proper grounding The u...

Page 4: ...roduct 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 ai...

Page 5: ... 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 ...

Page 6: ...it on the DIN rail If the terminal base does not lock into place use a screwdriver or similar device to open the locking tab press down on the base and release the locking lever to lock the base in place Terminal Base Unit Description Description 1 Female Flexbus connector 2 Terminal base unit 3 Male Flexbus connector 4 Keyswitch set to the position required for the installed module 5 Mounting hol...

Page 7: ... installation instructions for specific wiring information for the module you are installing in this terminal base To install the next terminal base repeat the preceding steps ATTENTION When using FLEX I O modules in a high vibration installation especially when mounting the DIN rail vertically use DIN rail locks Allen Bradley catalog number 1492 EA35 to prevent accidental separation of the termin...

Page 8: ...4 25 26 27 28 29 30 31 32 33 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 34 Inputs Commons V Voltage In V Voltage Out V Voltage Terminals 35 50 not available on 1794 TB2 A B C Common V Common 1794 TB3 shown V Common Terminals B 16 and B 33 V Voltage In Terminals C 34 and C 51 For daisy chaining Supply in C 34 and B 16 Supply out C 51 and B 33 Inputs ...

Page 9: ... C C N2 N1 N0 N7 N6 N5 N4 V CJC Chassis Ground Channel Channel Channel Channel Channel Channel Channel Channel 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1794 TB3T shown V 24V DC Supply In Terminals C 34 C 35 V 24V DC Common Terminal B 16 V Supply Out Terminals C 50 C 51 V Terminal B 33 C V DC common Wiring when total current draw through base is less than 10 A Wiring when total current...

Page 10: ...h eight 5x20 mm 1 6 A 250V AC slow blow fuses one for each even numbered terminal 0 14 on row B These fuses are suitable for use with the 1794 OA8 AC output module See the specific installation instructions for fusing recommendations for your particular module Use the Knife switch Terminal Base The knife switch terminal base has 16 individual mechanical knifeswitch circuit breakers two for each ch...

Page 11: ...le For 1794 TB3SK 1794 TB3TK 1794 TB3TK 1794 TB3TSK 1794 TB2 1794 TB2K 1794 TB3 1794 TB3K 1794 TB3S 1794 TB3TS Capable of 125V continuous max Basic Insulation Type Field Wiring Terminals to Flexbus or the lesser of the installed module For 1794 TB3G 1794 TB3GS 1794 TB3GK 1794 TB3GSK 1794 TB32 1794 TB32K 1794 TB32S 1794 TB32SK Capable of 50V continuous max Basic Insulation Type Field Wiring Termina...

Page 12: ...1794 TB2 1794 TB2K 1794 TB3 1794 TB3K 1794 TB3S 1794 TB3SK AC DC AC DC 1794 TB3T 1794 TB3TS 1794 TB3TK 1794 TB3TSK AC DC AC DC 1794 TB3G 1794 TB3GK 1794 TB3GS 1794 TB3GSK AC DC 1794 TB32 1794 TB32K 1794 TB32S 1794 TB32SK AC DC Environmental Specifications Attribute Value Operating temperature IEC 60068 2 1 Test Ad Operating Cold IEC 60068 2 2 Test Bd Operating Dry Heat IEC 60068 2 14 Test Nb Opera...

Page 13: ... 1794 TB3 1794 TB3K 1794 TB3S 1794 TB3SK 1794 TB3T 1794 TB3TK 1794 TB3TS and 1794 TB3TSK must be used at or below 60V or 75V DC IECEx IECEx System compliant with IEC 60079 0 General Requirements IEC 60079 7 Explosive Atmospheres Protection e For 1794 TB3G 1794 TB3GK 1794 TB3GS 1794 TB3T 1794 TB3TS 1794 TB3GSK 1794 TB3TK 1794 TB3TSK 1794 TB3 1794 TB3K 1794 TB3S 1794 TB3SK 1794 TBN 1794 TBNK II 3 G ...

Page 14: ... Secure DIN rail approximately every 200 mm 7 87 in A Mounting hole dimensions for optional mounting kit B DIN rail C Operating temperature 25 4 1 0 below each module when mounted in any position must not exceed 55 C 131 F Measure here for vertical mounting position with adapter up Measure here for horizontal position A B C Terminal Base 1794 TB3S shown Terminal Base 1794 TB3 shown Adapter 1794 AS...

Page 15: ...Rockwell Automation Publication 1794 IN092F EN P November 2021 15 FLEX I O Terminal Base Units Installation Instructions Notes ...

Page 16: ...t should 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 documentation needs better If you have any suggestions on how to improve our content complete the form at rok auto docfeedback Technical Support Center Find help with how to videos FAQs chat user for...

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