1. Overview

2. Key Features

• 8 analog input channels, dedicated for T9431

• Accepts standard 4–20 mA field transmitter signals

• Built-in surge suppression and EMI filtering

• Per channel isolation and fault protection

• Supports 2-wire and 4-wire transmitters

• Suitable for Simplex / Dual / TMR redundant architecture

• Screw terminal blocks for easy field wiring

• Conformal coated PCB for harsh industrial environment

• Hot-swap compatible with system powered on

3. Electrical Specifications

• Input Signal: 4–20 mA

• Input Impedance: 125 Ω

• Channel Isolation: 500 VDC field to system

• Overvoltage Protection: Built-in TVS diode per channel

• Internal Filter: Low pass filter for industrial noise rejection

• System Interface: Direct rear connector mate with T9431 module

4. Mechanical

• Form Factor: Single width 6U FTA for T9100 chassis

• Mounting: Installs at front of T9431 module

• Termination: Screw type field terminals

• Weight: Approx. 0.35 kg

5. Environmental

• Operating Temperature: -40 °C to +70 °C

• Storage Temperature: -40 °C to +85 °C

• Humidity: 5%～95% RH non-condensing

6. Safety and Approvals

• Compliance: IEC 61508 SIL 3 system level

• Approvals: CE, UL, CSA, ATEX, IECEx, TÜV

7. Installation

1. Mount T9831 onto the front of T9431 analog input module.

2. Route shielded twisted pair cable from field transmitters to FTA terminals.

3. Connect 2-wire or 4-wire sensors according to terminal diagram.

4. Single point grounding recommended for cable shield.

5. Support online replacement without system shutdown.

8. Ordering Information

• T9831: 8CH Analog Input FTA for T9431

• T9431: 8CH 4–20mA Analog Input Module

• T9100: AADvance System Chassis

• T9110: AADvance Safety Processor