1. Introduction

• Function: 60‑channel isolated analogue input (mA / VDC)

• Architecture: Fully triplicated TMR (3‑2‑0 fault tolerant)

• Safety: IEC 61508 SIL 3

• Inputs: 0–22 mA / 0–6 VDC (per‑channel configurable)

• Resolution: High‑precision sigma‑delta ADC

• Isolation: 2500 VDC optical isolation (field‑to‑system)

• SOE: 1 ms time‑stamp resolution

• Hot‑swap: Supported

• Diagnostics: Comprehensive per‑channel fault detection

2. Product Overview

• 60 channels isolated analogue input (0–22 mA / 0–6 VDC)

• Triple Modular Redundancy (TMR) with HIFT architecture

• Per‑channel open/short‑circuit and over/under‑range detection

• 2500 VDC optical isolation per channel

• 1 ms resolution SOE logging

• Hot‑swap capable

• Front‑panel LED status indicators

• Compatible with T8100 / T8400 chassis

• High density: 60 channels in single‑width 6U form factor

3. Specifications

3.1 Mechanical

• Form Factor: T8000 chassis single‑width module, 6U height

• Dimensions (H × W × D): 266 mm × 31 mm × 303 mm

• Weight: Approx. 1.2 kg

• Mounting: T8100 / T8400 chassis slots 1–16

• Terminals: Front‑panel screw terminals (60 channels)

3.2 Electrical

• System Supply: 20–32 VDC (nominal 24 VDC)

• Power Consumption: 18–22 W

• Input Ranges (per channel configurable):

  • Current: 0–22 mA

  • Voltage: 0–6 VDC

• Resolution: Sigma‑delta ADC, high precision

• Safety Accuracy: ±1% full scale

• Isolation: 2500 VDC optical barrier (field‑to‑system)

• Channel Crosstalk: –40 dB typical

• Update Time: ≤ 1 ms per channel

3.3 Functional

• Redundancy: TMR (three independent slices)

• Voting: 1oo2D per channel

• Diagnostics:

  • Open‑circuit detection

  • Short‑circuit detection

  • Over‑/under‑range detection

  • On‑board BIST (periodic self‑test)

• SOE Resolution: 1 ms

• Response Time: ≤ 2 ms

• Data Integrity: BER < 10⁻¹²

3.4 Environmental

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: –25 °C to +70 °C

• Humidity: 5–95 % RH, non‑condensing

• Vibration: IEC 60068‑2‑6 compliant

• Shock: IEC 60068‑2‑27 compliant

3.5 Safety & Certification

• Safety Standard: IEC 61508 SIL 3

• Approvals: CE, UL, CSA, ATEX, IECEx

• Fault Tolerance: TMR (3‑2‑0)

• PFHd: < 1.0 × 10⁻⁹ / hour (SIL 3)

4. Front Panel Indicators

• PWR (Green): ON = module power healthy

• RUN (Green): ON = active; FLASHING = BIST/initialization

• FAULT (Red): ON = critical fault; FLASHING = minor fault

• COM (Green): FLASHING = backplane communication active

• CH1–CH60 LEDs: Reflect input status / fault per channel

5. Installation

• Chassis: Insert into any vacant slot in T8100 / T8400 chassis

• Hot‑Swap: Supported; no system shutdown required

• Front‑Panel Screws: Torque 0.8–1.0 Nm

6. Wiring

• Signal Types: 4–20 mA / 0–20 mA / 0–6 VDC

• Field Connection:

  • mA: Transmitter + → channel +; transmitter – → channel –

  • VDC: Signal + → channel +; signal – → channel –

• Wire Gauge: 16–22 AWG stranded

• Terminal Torque: 0.5–0.6 Nm

7. Operation

• Power‑Up: PWR ON; RUN flashes during BIST (5–10 s)

• Normal: PWR/RUN steady green; FAULT OFF; COM flashing

• Faults:

  • FAULT ON: TMR mismatch, short circuit, overrange

  • FAULT FLASHING: Single‑path fault, minor mismatch

• SOE: All analogue threshold crossings time‑stamped at 1 ms

8. Ordering Information

• T8432: Standard 60‑ch TMR analogue input (0 °C to +60 °C)

• T8432C: Conformal coated version (extended temperature / harsh environment)

• TC‑T8432: Terminal cable kit

• T8100 / T8400: Trusted chassis