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PD-T8834

Trusted

Rockwell Automation Publication PD-T8834

Issue 3

Trusted 20 Channel Isolated AI/DI FTA External

Powered

Product Overview

The Trusted® 20 Channel Isolated Analogue Input / Digital Input (AI/DI) Field Termination Assembly
(FTA), Part Number: T8834, is designed to act as the main interface between a field device
generating a 4 mA - 20 mA signal and the Isolated Analogue Input Module, Part Number: T8433.
Part Number: T8834 is required where the field device signal is ranged down to 0 mA or the device
must be powered by the FTA.

Features:

•

20 isolated input channels per FTA.

•

Standard DIN rail compatibility.

•

Simple installation and connection.

•

Versatile circuit operation.

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Содержание Trusted T8834

Страница 1: ...TA Part Number T8834 is designed to act as the main interface between a field device generating a 4 mA 20 mA signal and the Isolated Analogue Input Module Part Number T8433 Part Number T8834 is required where the field device signal is ranged down to 0 mA or the device must be powered by the FTA Features 20 isolated input channels per FTA Standard DIN rail compatibility Simple installation and con...

Страница 2: ...Trusted PD T8834 Rockwell Automation Publication PD T8834 Issue 3 Page intentionally left blank ...

Страница 3: ...ation and operator maintenance manuals REVISION AND UPDATING POLICY This document is based on information available at the time of its publication The document contents are subject to change from time to time The latest versions of the manuals are available at the Rockwell Automation Literature Library under Product Information information Critical Process Control Safety Systems TRUSTED RELEASE Th...

Страница 4: ... If you do not have an account then you can create one using the Sign Up link at the top right of the web page DOCUMENTATION FEEDBACK Your comments help us to write better user documentation If you discover an error or have a suggestion on how to make this publication better send your comment to our technical support group at http rockwellautomation custhelp com ...

Страница 5: ...hat can cause an explosion in a hazardous environment which can cause injury or death property damage or economic loss ATTENTION Identifies information about practices or circumstances that can cause injury or death CAUTION Identifies information about practices or circumstances that can cause property damage or economic loss BURN HAZARD Identifies where a surface can reach dangerous temperatures ...

Страница 6: ...mables ou équivalente MAINTENANCE Maintenance must be carried out only by qualified personnel Failure to follow these instructions may result in personal injury CAUTION RADIO FREQUENCY INTERFERENCE Most electronic equipment is influenced by Radio Frequency Interference Caution should be exercised with regard to the use of portable communications equipment around such equipment Signs should be post...

Страница 7: ... Issue 3 v ISSUE RECORD Issue Date Comments 1 Oct 05 Initial Issue 2 Aug 06 Terminations 3 Jun 16 Rebranded and updated to incorporate IEEE standards with correction of typographical errors and also standardise the Relative Humidity Range and Operating Temperature statements in the Specification Section ...

Страница 8: ...PREFACE Trusted 20 Channel Isolated AI DI FTA External Powered vi Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 9: ...ation Publication PD T8834 Issue 3 1 Table of Contents 1 Description 3 2 Installation 5 3 Associated Cable Selection 7 4 Assembly Pinout Connections 9 4 1 CON1 Connections 9 4 2 TB1 Connections 11 4 3 TB2 Connections 12 4 4 TB3 Connections 13 5 Field Circuit Design 15 6 Specifications 19 ...

Страница 10: ...Table of Contents Trusted 20 Channel Isolated AI DI FTA External Powered 2 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 11: ...ugh the 100 Ω precision sense resistor This converts the current loop into a voltage measured by the module on CON1 VSENSE A supply of power is passed through the Zener diode to provide 7 5 Vdc low current power supply to power the isolation amplifiers on the input module VPOWER TB1 terminals A and B are the usual connection points for the field current loop TB2 terminals and are used to provide p...

Страница 12: ...1 Description Trusted 20 Channel Isolated AI DI FTA External Powered 4 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 13: ... 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 TB2 Screw Terminals 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Channel 1 Circuit Channel 5 Circuit Channel 2 Circuit Channel 3 Circuit Channel 4 Circuit Channel 6 Circuit Channel 7 Circuit Channel 8 Circuit Channel 9 Circu...

Страница 14: ...2 Installation Trusted 20 Channel Isolated AI DI FTA External Powered 6 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 15: ...ion PD T8834 Issue 3 7 3 Associated Cable Selection Refer to the Product Descriptions detailed below PD TC600 Trusted I O SmartSlot Cables 60 Channel PD TC700 Trusted I O Companion Slot Cables 60 Channel Note 60 channel cables are used for this FTA due to the three wire per channel connection to the input module ...

Страница 16: ...3 Associated Cable Selection Trusted 20 Channel Isolated AI DI FTA External Powered 8 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 17: ...SENSE 5 CH3_VPOWER CH3_COMMON CH3_VSENSE 6 CH4_VPOWER CH4_COMMON CH4_VSENSE 7 CH5_VPOWER CH5_COMMON CH5_VSENSE 8 CH6_VPOWER CH6_COMMON CH6_VSENSE 9 CH7_VPOWER CH7_COMMON CH7_VSENSE 10 CH8_VPOWER CH8_COMMON CH8_VSENSE 11 CH9_VPOWER CH9_COMMON CH9_VSENSE 12 CH10_VPOWER CH10_COMMON CH10_VSENSE 13 CH11_VPOWER CH11_COMMON CH11_VSENSE 14 CH12_VPOWER CH12_COMMON CH12_VSENSE 15 CH13_VPOWER CH13_COMMON CH1...

Страница 18: ...ication PD T8834 Pin Row A B C 20 CH18_VPOWER CH18_COMMON CH18_VSENSE 21 CH19_VPOWER CH19_COMMON CH19_VSENSE 22 CH20_VPOWER CH20_COMMON CH20_VSENSE 23 N C N C N C 24 N C N C N C 25 N C N C N C 26 N C N C N C 27 N C N C N C 28 N C N C N C 29 N C N C N C 30 N C N C N C 31 N C N C N C 32 N C N C N C Table 1 CON1 Connections ...

Страница 19: ...s are detailed below Pin Service Pin Service 1 CH1_A 21 CH11_A 2 CH1_B 22 CH11_B 3 CH2_A 23 CH12_A 4 CH2_B 24 CH12_B 5 CH3_A 25 CH13_A 6 CH3_B 26 CH13_B 7 CH4_A 27 CH14_A 8 CH4_B 28 CH14_B 9 CH5_A 29 CH15_A 10 CH5_B 30 CH15_B 11 CH6_A 31 CH16_A 12 CH6_B 32 CH16_B 13 CH7_A 33 CH17_A 14 CH7_B 34 CH17_B 15 CH8_A 35 CH18_A 16 CH8_B 36 CH18_B 17 CH9_A 37 CH19_A 18 CH9_B 38 CH19_B 19 CH10_A 39 CH20_A 20...

Страница 20: ...ows how they are numbered The connections are detailed below Pin Service Pin Service 1 CH1 21 CH11 2 CH1 22 CH11 3 CH2 23 CH12 4 CH2 24 CH12 5 CH3 25 CH13 6 CH3 26 CH13 7 CH4 27 CH14 8 CH4 28 CH14 9 CH5 29 CH15 10 CH5 30 CH15 11 CH6 31 CH16 12 CH6 32 CH16 13 CH7 33 CH17 14 CH7 34 CH17 15 CH8 35 CH18 16 CH8 36 CH18 17 CH9 37 CH19 18 CH9 38 CH19 19 CH10 39 CH20 20 CH10 40 CH20 Table 3 TB2 Connection...

Страница 21: ...shows how they are numbered The connections are detailed below Pin Service Pin Service 1 CH1 21 CH11 2 CH1 22 CH11 3 CH2 23 CH12 4 CH2 24 CH12 5 CH3 25 CH13 6 CH3 26 CH13 7 CH4 27 CH14 8 CH4 28 CH14 9 CH5 29 CH15 10 CH5 30 CH15 11 CH6 31 CH16 12 CH6 32 CH16 13 CH7 33 CH17 14 CH7 34 CH17 15 CH8 35 CH18 16 CH8 36 CH18 17 CH9 37 CH19 18 CH9 38 CH19 19 CH10 39 CH20 20 CH10 40 CH20 Table 4 TB3 Connecti...

Страница 22: ...4 Assembly Pinout Connections Trusted 20 Channel Isolated AI DI FTA External Powered 14 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 23: ... resistor from top to bottom as shown in Figure 1 The field device may need power supplied through the loop or with separate supply or with separate supply and return The current loop may be returned to the FTA or sunk into the field circuitry The following diagrams provide some suggested field circuit arrangements Figure 3 2 mA to 20 mA 2 wire Field Sourcing Current This arrangement may also be m...

Страница 24: ... can go down to 0 mA and so it cannot be used to power the input circuit Figure 5 0 mA to 20 mA 3 Wire Field Sinking Current In this example the device is ranged down to 0 mA and cannot power the input circuit It also requires a power supply from the FTA In this case the device draws the current loop to ground and so the current loop is connected below the 100 Ω resistor Isolated PSU TB1 A TB1 B 1...

Страница 25: ... of each channel on the T8834 FTA with the component numbers for channel 1 The channel circuits are arranged as shown in Figure 2 Unused inputs should be terminated by wiring a 24 V supply via a resistor 2K or 2K2 to the terminal and wiring the B terminal to the associated zero volts TB1 A TB1 B R13 100 Ω D1 7V5 CON1 VPOWER CON1 COMMON CON1 VSENSE TB2 TB3 TB2 TB3 R16 4K75 R1 Link R4 Link R7 unused...

Страница 26: ...5 Field Circuit Design Trusted 20 Channel Isolated AI DI FTA External Powered 18 Issue 3 Rockwell Automation Publication PD T8834 Page intentionally left blank ...

Страница 27: ... Field Loop Volt Drop at 20 mA 9 5 V if loop powered else 2 V Operating Temperature 0 C to 60 C 32 F to 140 F Non operating Temperature 20 C to 70 C 4 F to 158 F Relative Humidity range operating storage and transport 10 95 non condensing Environmental Specifications Refer to Document 552517 Dimensions Height 120 mm 4 72 in Width 336 mm 13 23 in Depth 50 mm 1 97 in Weight 500 g 1 1 lb ...

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