TRICONEX 3381

TMR Pulse Input Module (SIL3, for Tricon V9/V10/V11 SIS)

Official English Specification (consistent format: 3005/3006/3008)

1. General Description

2. Model Information

• Model: 3381

• Type: TMR Pulse Input Module

• System Series: Tricon V9 / V10 / V11 (legacy Tricon, not Trident/3008‑3009)

• Safety Level: SIL3 (IEC 61508, TÜV/FM/CSA)

• Part Number: 3381‑010 / 7400120‑xxx

• Status: Active / In production (for Tricon V9‑V11)

3. Main Features

• TMR Architecture: 3‑channel redundant input, 2oo3 voting, fault‑tolerant

• Pulse/Frequency Input: For tachometers, flow meters, encoders

• High Speed: Up to 5,000 Hz continuous input, 20 kHz peak

• High Resolution: 24‑bit precision, ±0.1% accuracy

• 6 Isolated Channels: 6 independent, galvanically isolated inputs

• Wide Voltage Range: ±33 VDC max, 24 VDC nominal

• Diagnostics: Precision reference test, open/short circuit detection

• Hot‑Swappable: Online replacement in Tricon chassis

• Temperature Rating: −40°C to +70°C (harsh industrial)

4. Technical Parameters

4.1 Input Specifications

• Channels: 6 isolated pulse input channels

• Input Type: Pulse, frequency, tachometer, encoder

• Frequency Range: 0–5,000 Hz (continuous), up to 20 kHz (peak)

• Resolution: 24‑bit

• Accuracy: ±0.1% (typical)

• Input Voltage: 24 VDC nominal, ±33 VDC max

• Input Impedance: >10 kΩ

• Isolation: 1,500 Vrms (channel‑to‑backplane)

4.2 Processing & Diagnostics

• Voting: 2oo3 TMR, mid‑value selection

• Diagnostic Coverage: >99%

• Fault Detection: Open circuit, short circuit, out‑of‑range, reference error

• Gear Teeth: Up to 255 teeth (turbine/rotary monitoring)

4.3 Environmental

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

• Storage Temperature: −40°C to +85°C

• Humidity: 5%–95% non‑condensing

• Vibration: 5–200 Hz, 2 g

• Protection: IP20 (conformal coating optional)

4.4 Power & Physical

• Backplane Power: 5 VDC

• Power Consumption: ≤12 W

• Dimensions: Tricon standard I/O slot (228×160×25 mm)

• Weight: ~0.8 kg

5. Function Overview

• Speed Monitoring: Turbine/generator shaft speed, overspeed protection

• Flow Measurement: Pulse‑type flow meters (gas, liquid, steam)

• Position/Encoder: Rotary encoder pulse counting, position tracking

• Frequency Monitoring: Vibration, pump speed, fan speed

• Safety Voting: TMR 2oo3 ensures valid pulse data even with one channel fault

6. LED Indicators

• PWR (Green): 5 VDC power OK

• RUN (Green): Module active, TMR sync normal

• FAULT (Red): Input fault, voting mismatch, or diagnostics fail

• CH1–CH6 (Yellow): Pulse activity per channel

7. Installation & Configuration

1. Insert 3381 into Tricon V9/V10/V11 I/O slot

2. Connect pulse sensors (tachometer/encoder/flow meter) to front terminals

3. Use TriStation 1131 (v4.x+) to configure:

   • Channel enable/disable

   • Frequency range (0–5 kHz)

   • Gear teeth count

   • Overspeed/underspeed trip limits

4. Verify: PWR+RUN green; CH LEDs flash with pulse input

8. Typical Applications

• Turbine Overspeed Protection: Steam/gas turbine ESD trip

• Flow Safety Monitoring: Critical process flow (oil/gas, chemical)

• Rotary Equipment: Pumps, fans, compressors speed monitoring

• Encoder Position: High‑precision shaft position tracking

• SIL3 Safety Loops: Requires high‑integrity pulse measurement

9. Maintenance

• Hot‑swap faulty 3381 without system shutdown

• Check sensor wiring/terminals for open/short circuits

• Review fault logs via TriStation 1131

• Calibrate annually (24‑bit precision reference)

10. Compatibility

• Compatible Systems: Tricon V9 / V10 / V11 SIS (not Trident/3008‑3009)

• Configuration Software: TriStation 1131 (v4.x+)

• Matching Modules: Tricon V9‑V11 CPU (e.g., 3008), power supplies, backplanes

• Model: 3381

• Description: TMR Pulse Input Module, 6‑Channel, 5 kHz, SIL3, for Tricon V9‑V11