ICS TRIPLEX T9481 Isolated Analog Input Termination Assembly FTA
May 15, 2026

ICS TRIPLEX T9481 Isolated Analog Input Termination Assembly FTA

T9481 is analog input FTA for SIL3 TMR safety DCS, collecting 4-20mA field analog signals for safety instrumented systems in power and chemical plants.

Description

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1. Overview

The T9481 is a 3‑channel isolated analog output module for the AADvance T9100 chassis. It provides 4–20 mA / 0–10 VDC isolated outputs for driving analog actuators, control valves, positioners, and other safety‑related analog devices in ESD, BMS, and process safety applications.
It supports TMR / Dual / Simplex operation, hot‑swap, and comprehensive channel diagnostics.

2. Features

  • 3 isolated analog output channels (individually isolated)

  • Output ranges: 4–20 mA or 0–10 VDC (per‑channel configurable)

  • SIL 3 (IEC 61508) with TÜV certification

  • Redundancy: TMR, Dual, Simplex supported

  • Channel diagnostics: open/short circuit, overrange, load monitoring

  • Voltage & current monitoring per channel

  • Reverse current protection, short‑circuit protection

  • Hot‑swap (online replacement)

  • User‑configurable fail‑safe mode: hold last state / safe value / custom value

  • Conformal coated for harsh environments

  • Dedicated FTA: T9852


3. Electrical Specifications

Output

  • Channels: 3 (isolated)

  • Ranges (per channel):

    • 4–20 mA (default)

    • 0–10 VDC

  • Resolution: 12‑bit

  • Accuracy: ±0.1% FS @ 25 °C

  • Load (current): 0–600 Ω

  • Load (voltage): ≥ 1 kΩ

  • Update rate: 100 ms typical

Isolation

  • Channel‑to‑channel / channel‑to‑backplane: ±1.5 kVDC, 1 minute

Backplane

  • Supply: 18–32 VDC (redundant)

  • Power dissipation: 2.5 W max


4. Mechanical

  • Form: Single‑width 6U module (T9100 chassis)

  • Slots: Any slot 1–12; hot‑swap capable

  • Weight: ~0.35 kg (12 oz)

  • FTA: T9852 (field terminal assembly)


5. Environmental

  • Operating temperature: −40 °C to +70 °C

  • Storage: −40 °C to +85 °C

  • Humidity: 5–95 % RH, non‑condensing


6. Safety & Approvals

  • IEC 61508 SIL 3 (TÜV)

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


7. Front Panel LEDs

  • PWR (Green): Power OK

  • RUN (Green): Module operational

  • FAULT (Red): Module/channel fault

  • CH1–CH3: Channel status / fault indication


8. Installation & Wiring

  1. Insert into any T9100 slot (hot‑swap supported).

  2. Connect front T9852 FTA.

  3. Wire analog devices (control valves/positioners) to T9852 terminals.

  4. Use shielded twisted pair for noise immunity.

  5. Configure via AADvance Workbench (range, scaling, diagnostics, fail‑safe).


9. Ordering Information

  • T9481: 3‑Channel Isolated Analog Output Module (SIL 3)

  • T9852: FTA for T9481

  • T9100: AADvance 6U/12‑slot chassis

  • T9110: AADvance Safety Processor


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