Overview of ICS Triplex T8801 FTA Digital Input Module
1、 Basic Product Information
Project parameters
Product model ICS Triplex T8801
Product Name Trusted 40 Channel 24Vdc Digital Input FTA
Manufacturer Allen Bradley/Rockwell Automation
Origin: United States
Certified CE, RoHS, UL

2、 Core functions and features
1. Main purpose
T8801 is a Field Termination Assembly (FTA) designed as the primary interface between a field device that generates digital signals and the Trusted TMR 24V DC digital input module T8403.

2. Key characteristics
Characteristic Description
40 input channels, each FTA provides 40 independent Triple Modular Redundancy (TMR) input channels
24V DC power supply standard 24V DC operating voltage
Industrial standard wiring supports 2-wire on-site device connection
DIN rail installation standard DIN rail compatibility, easy to install
SmartSlot connection supports «one to many» hot swappable input modules without the need to download programs
Channel fuse protection: Each channel is equipped with an independent 50mA fuse to limit the on-site circuit current
LED indicator board mounted light-emitting diode displays the integrity status of the on-site power supply
Line monitoring: Each channel can choose line monitoring to detect on-site wiring faults such as open/short circuits
Isolation protection 2500V pulse withstand photoelectric/current isolation barrier
Automatic diagnosis with comprehensive automatic diagnosis and self checking functions
3、 Technical specifications and parameters
Parameter values
Input voltage 24V DC
Output voltage 24V DC
Working temperature -40 ℃ -70 ℃
The external dimensions are approximately 120mm × 80mm × 30mm (reference value)
Weight approximately 200g (reference value)
Communication method: Ethernet Modbus

4、 System Architecture and Applications
1. TMR system connection
FTA is connected to the digital input module through a 96 pin SmartSlot connector (SK1)
Dual 24V DC power supply is jointly powered by diodes and limited by fuses
The input signal is connected to 12 3-pin terminal blocks and 2 2-pin terminal blocks through a dual wire connection
2. Application Fields
Industry application scenarios
Power system power plants, transmission and distribution networks
Discrete automation motors, generators, drive systems PLC
In the field of motion control automation control
Industrial control DCS, ESD, F&G and other safety critical systems
5、 Comparison of Related Models
Model Channel Number Voltage Type Type
T8800 40 channel 24V DC digital input FTA
T8801 40 channel 24V DC digital input FTA
T8802 60 channel 24V DC digital input FTA
T8805 60 channel 24V DC digital input FTA
T8821 40 channel 120V DC digital input FTA
T8824 40 channel 120V AC digital input FTA
Attention: T8800 and T8801 have similar functions, both using 40 channel 24V DC digital input FTA. Please refer to the official manual for specific differences.

6、 Product Assurance Information
Project Details
Product status: brand new and original
Warranty period of 12 months
Spot inventory is available and supports fast shipping