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PD-T8834
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.
Rockwell Automation Publication PD-T8834
Issue 3
Trusted
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Summary of Contents for Rockwell Automation Trusted T8834
- Page 1 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. Rockwell Automation Publication PD-T8834 Issue 3...
- Page 2 Trusted PD-T8834 Page intentionally left blank Rockwell Automation Publication PD-T8834 Issue 3...
- Page 3 PREFACE PREFACE In no event will Rockwell Automation be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. The examples given in this manual are included solely for illustrative purposes. Because of the many variables and requirements related to any particular installation, Rockwell Automation does not assume responsibility or reliability for actual use based on the examples and diagrams.
- Page 4 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 Issue 3 Rockwell Automation Publication PD-T8834...
- Page 5 IMPORTANT Identifies information that is critical for successful application and understanding of the product. NOTE Provides key information about the product or service. Tips give helpful information about using or setting up the equipment. Rockwell Automation Publication PD-T8834 Issue 3...
- Page 6 CAUTION: The module PCBs contains static sensitive components. Static handling precautions must be observed. DO NOT touch exposed connector pins or attempt to dismantle a module. Issue 3 Rockwell Automation Publication PD-T8834...
- Page 7 Initial Issue Aug 06 Terminations 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. Rockwell Automation Publication PD-T8834 Issue 3...
- Page 8 PREFACE Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 9: Table Of Contents
Associated Cable Selection ..................7 Assembly Pinout Connections .................. 9 4.1. CON1 Connections ........................9 4.2. TB1 Connections ........................11 4.3. TB2 Connections ........................12 4.4. TB3 Connections ........................13 Field Circuit Design ....................15 Specifications ......................19 Rockwell Automation Publication PD-T8834 Issue 3... - Page 10 Table of Contents Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 11: Description
The connector linking the 20 channels on the input module to the FTA is terminated at CON1 which is a 96-way socket. Two rows of screw terminal connectors (TB1 and TB2) are used to connect the field wiring. Rockwell Automation Publication PD-T8834 Issue 3... - Page 12 1. Description Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 13: Installation
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 Figure 2 Connector Locations Rockwell Automation Publication PD-T8834 Issue 3... - Page 14 2. Installation Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 15: Associated Cable Selection
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. Rockwell Automation Publication PD-T8834 Issue 3... - Page 16 3. Associated Cable Selection Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 17: Assembly Pinout Connections
CH6_VSENSE CH7_VPOWER CH7_COMMON CH7_VSENSE CH8_VPOWER CH8_COMMON CH8_VSENSE CH9_VPOWER CH9_COMMON CH9_VSENSE CH10_VPOWER CH10_COMMON CH10_VSENSE CH11_VPOWER CH11_COMMON CH11_VSENSE CH12_VPOWER CH12_COMMON CH12_VSENSE CH13_VPOWER CH13_COMMON CH13_VSENSE CH14_VPOWER CH14_COMMON CH14_VSENSE CH15_VPOWER CH15_COMMON CH15_VSENSE CH16_VPOWER CH16_COMMON CH16_VSENSE CH17_VPOWER CH17_COMMON CH17_VSENSE Rockwell Automation Publication PD-T8834 Issue 3... - Page 18 4. Assembly Pinout Connections Trusted 20 Channel Isolated AI/DI FTA External Powered CH18_VPOWER CH18_COMMON CH18_VSENSE CH19_VPOWER CH19_COMMON CH19_VSENSE CH20_VPOWER CH20_COMMON CH20_VSENSE Table 1 CON1 Connections Issue 3 Rockwell Automation Publication PD-T8834...
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Page 19: Tb1 Connections
CH3_B CH13_B CH4_A CH14_A CH4_B CH14_B CH5_A CH15_A CH5_B CH15_B CH6_A CH16_A CH6_B CH16_B CH7_A CH17_A CH7_B CH17_B CH8_A CH18_A CH8_B CH18_B CH9_A CH19_A CH9_B CH19_B CH10_A CH20_A CH10_B CH20_B Table 2 TB1 Connections Rockwell Automation Publication PD-T8834 Issue 3... -
Page 20: Tb2 Connections
CH17 + CH7 - CH17 - CH8 + CH18 + CH8 - CH18 - CH9 + CH19 + CH9 - CH19 - CH10 + CH20 + CH10 - CH20 - Table 3 TB2 Connections Issue 3 Rockwell Automation Publication PD-T8834... -
Page 21: Tb3 Connections
CH17 + CH7 - CH17 - CH8 + CH18 + CH8 - CH18 - CH9 + CH19 + CH9 - CH19 - CH10 + CH20 + CH10 - CH20 - Table 4 TB3 Connections Rockwell Automation Publication PD-T8834 Issue 3... - Page 22 4. Assembly Pinout Connections Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 23: Field Circuit Design
This arrangement may also be made with a T8833 FTA. It expects the field transmitter to be self-powered, to provide both sides of the current loop to the FTA, and to have at least 2 mA of power at low range for the input circuit. Rockwell Automation Publication PD-T8834 Issue 3... - Page 24 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. Issue 3 Rockwell Automation Publication PD-T8834...
- Page 25 1. The channel circuits are arranged as shown in Figure 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. Rockwell Automation Publication PD-T8834 Issue 3...
- Page 26 5. Field Circuit Design Trusted 20 Channel Isolated AI/DI FTA External Powered Page intentionally left blank Issue 3 Rockwell Automation Publication PD-T8834...
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Page 27: Specifications
10 % – 95 %, non-condensing (operating, storage and transport) 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) Rockwell Automation Publication PD-T8834 Issue 3...
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