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Triconex 3664 / 3674 Dual Digital Output Module

Brand: Triconex
Product Family: Tricon Systems
Model Number: 3664 / 3674
Type: Dual Digital Output Module
Product Origin: USA
Payment: T/T, Western Union, Credit Card
Price: USD 7320
Dimensions: 2.7 cm x 12.5 cm x 15.5 cm
Weight: 1.14 kg
Warranty: 12 months

  • Product Details
  • Technical Documentation

The Triconex 3664 Dual Digital Output Module is designed to support safety-critical control programs with robust diagnostics and redundancy mechanisms while maintaining cost efficiency. Below is a detailed overview of its specifications and operational features.


Key Features

  1. Dual Redundancy Design:
    • Implements 2-out-of-3 voting on each switch for safe and reliable output generation.
    • Optimized for safety-critical applications where cost efficiency is prioritized over maximum availability.
  2. Voltage Loopback Circuit:
    • Verifies the operation of output switches, ensuring functionality even without load presence.
    • Triggers the LOAD/FUSE alarm when field voltage mismatches the commanded output state.
  3. Comprehensive Diagnostics:
    • Continuously monitors each channel and circuit.
    • Activates the Fault Indicator and chassis alarm signal upon diagnostic failure.
  4. Hot-Spare Capability:
    • Allows online replacement of faulty modules without system downtime.
  5. Mechanical Keying:
    • Prevents improper installation into the chassis.

Specifications

Feature Details
Model Numbers 3664 / 3674
Nominal Voltage 24 VDC
Voltage Range 16-30 VDC
Maximum Voltage 36 VDC
Voltage Drop <1.5 VDC (typical)
Output Signals 32, commoned
Current Ratings 2A per point (max), 10A surge for 10 ms
Load Leakage 2 mA (max)
Power Module Load <10 watts
Point Isolation Minimum 1500 VDC
Diagnostic Indicators ON/OFF state, Module Status, Field Alarm, Load/Fuse, and Point-specific Fault Alarms
Fuses Self-protecting (no external fuses required)
Color Code Dark Blue

Diagnostic Indicators

  • ON or OFF State: Indicates the status of each point.
  • Module Status: Displays PASS, FAULT, and ACTIVE conditions.
  • Field Alarm: Alerts users to discrepancies like stuck-ON or stuck-OFF faults.

Fault Handling:

  • Stuck-ON Faults:
    • 3664: Affected point remains ON while others retain their commanded states.
    • 3674: Affected point remains ON while others are de-energized.
  • Stuck-OFF Faults:
    • Affected point remains OFF, but other points maintain their commanded states.

Environmental Specifications

Parameter Details
Shock Resistance 10G, ½-sinewave for 11 ms
Vibration Resistance 1 mm peak-to-peak from 5–16 Hz, 0.5G from 16–150 Hz
Operating Temperature 0°C to 60°C (32°F to 140°F)
Airborne Contaminants Meets ISA-S71.04-1985 Airborne Contaminants Class G3 standards

Field Termination and Power Considerations

  • Requires a separate External Termination Panel (ETP) for cable interface with the Tricon backplane.
  • Designed for sourcing current to field devices, necessitating field power wiring to each output point.

The Triconex 3664 Dual Digital Output Module provides a cost-efficient yet reliable solution for safety-critical applications. Its dual redundancy, advanced diagnostics, and hot-spare capability enhance system safety and reduce downtime during maintenance.


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