Trusted 40-Channel Digital Input for Rockwell Automation Rockwell Versatile FTA User's Manual and Specifications
Summary
The T8843 is a professional 40-channel Versatile Field Termination Assembly designed to connect field digital signals to critical Triple Modular Redundant (TMR) industrial input modules. Featuring standard DIN rail compatibility and SmartSlot technology, it simplifies installation while providing reliable signal integrity in demanding environments. This technical manual is essential for experienced plant maintenance personnel, offering detailed procedures for troubleshooting and maintaining the high-reliability safety system.
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PD-T8843 Trusted
Trusted 40 Channel Digital Input Versatile FTA
Product Overview The Trusted® 40 Channel Digital Input Versatile Field Termination Assembly (VFTA) T8843 is designed to act as the main interface between a field device generating a digital signal and the Trusted Triple Modular Redundant (TMR) 24 Vdc Digital Input Module T8403, or the Trusted TMR 120 Vdc Digital Input Module T8423.
Features: • 40 input channels per VFTA. • Industry standard field device connections (3-wire). • Standard DIN rail compatibility. • Simple installation and connection. • 24 V / 120 Vdc operation. • Smart Slot connection for ‘one to many’ hot replacement of input modules. • Fused field power supply per channel.
Rockwell Automation Publication PD-T8843 Issue 5
Page Summary Contents For Trusted 40-Channel Digital Input for Rockwell Automation Rockwell Versatile FTA User's Manual and Specifications
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PD-T8843 Trusted Trusted 40 Channel Digital Input Versatile FTA Product Overview The Trusted® 40 Channel Digital Input Versatile Field Termination Assembly (VFTA) T8843 is designed to act as the main ...
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Trusted 40 Channel Digital Input Versatile FTA PREFACE PREFACE In no event will Rockwell Automation be responsible or liable for indirect or consequential damages resulting from the use or application...
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PREFACE Trusted 40 Channel Digital Input Versatile FTA IMPORTANT A login is required to access the link. If you do not have an account then you can create one using the "Sign Up" link at the...
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Trusted 40 Channel Digital Input Versatile FTA PREFACE SCOPE This manual specifies the maintenance requirements and describes the procedures to assist troubleshooting and maintenance of a Trusted syst...
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PREFACE Trusted 40 Channel Digital Input Versatile FTA WARNINGS AND CAUTIONS WARNING: EXPLOSION RISK Do not connect or disconnect equipment while the circuit is live or unless the area is known to be ...
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Trusted 40 Channel Digital Input Versatile FTA PREFACE ISSUE RECORD Issue Date Comments 4 Sep 05 Format 5 Jun 06 Rebranded and updated to incorporate IEEE standards with correction of typographical er...
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Trusted 40 Channel Digital Input Versatile FTA Table of Contents Table of Contents 1. Description .........................................................................................................
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Trusted 40 Channel Digital Input Versatile FTA 1. Description 1. Description Figure 1 T8843 Layout The Trusted Temperature Field Termination Assembly (FTA) enables connection to 8 temperature, voltage...
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1. Description Trusted 40 Channel Digital Input Versatile FTA The cable linking the 40 channels on the input module to the VFTA is terminated at five 10-way connectors (TBG1 to TBG5). Smart Slot (Vers...
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Trusted 40 Channel Digital Input Versatile FTA 2. Installation 2. Installation Trusted Versatile FTA 40 Channel Digital Input T8843 is designed to be mounted on either of the TS32 or TS35 DIN rails in...
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Trusted 40 Channel Digital Input Versatile FTA 3. Associated Cable Selection 3. Associated Cable Selection Refer to the product descriptions detailed below: PD-TC000 Trusted Power Cables PD-TC200 Trus...
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Trusted 40 Channel Digital Input Versatile FTA 4. Assembly Pinout Connections 4. Assembly Pinout Connections 4.1. TBFP1 to TBFP5 Connections The pin connections of TBFP1 to TBFP5 are identical and are...
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4. Assembly Pinout Connections Trusted 40 Channel Digital Input Versatile FTA 4.3. TBG2 Connections Pin Service 2 Channel 9 3 Channel 10 4 Channel 11 5 Channel 12 6 Channel 13 7 Channel 14 8 Channel 1...
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Trusted 40 Channel Digital Input Versatile FTA 4. Assembly Pinout Connections Pin Service 8 Channel 23 9 Channel 24 10 Not used Table 4 TBG3 Connections 4.5. TBG4 Connections Pin Service 2 Channel 25 ...
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4. Assembly Pinout Connections Trusted 40 Channel Digital Input Versatile FTA Pin Service 5 Channel 36 6 Channel 37 7 Channel 38 8 Channel 39 9 Channel 40 10 Not used Table 6 TBG5 Connections 4.7. TBS...
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Trusted 40 Channel Digital Input Versatile FTA 4. Assembly Pinout Connections 4.8. TB1 to TB40 Connections The pin connections of TB1 (Channel 1) to TB40 (Channel 3) are identical and are detailed bel...
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Trusted 40 Channel Digital Input Versatile FTA 5. Specifications 5. Specifications Voltage Range 18 Vdc to 120 Vdc Fuses 40-off 315 m A 40-off 50 m A Maximum Current (Field Supply) 315 m A per power g...
Manual Details
| Brand | Rockwell Automation |
|---|---|
| Pages | 23 |
| File Size | 431.34 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What is the voltage range for this Digital Input FTA?
The operational voltage range is 18 Vdc to 120 Vdc.
How can I expand or upgrade the input modules?
It supports a SmartSlot connection, which allows for 'one to many' hot replacement of input modules.
What type of connections does this unit support for field devices?
It uses industry standard field device connections, specifically 3-wire.
Who is qualified to use this technical manual?
The manual is intended for plant maintenance personnel experienced in electronic equipment and trained to work with safety systems.