TRICONEX 3664

Description

Product Description

Product Parameters

• Brand/Model: TRICONEX 3664
• Electrical Parameters
  • Nominal Voltage: 24 VDC (wide voltage range of 16 – 30 VDC)
  • Output Channels: 32 commoned digital output channels with relay output type
  • Current Capacity: Maximum 2A per channel, 10A transient surge current (10ms duration)
  • Voltage Drop: Typical value less than 1.5 VDC
  • Load Leakage: Maximum 2mA
  • Point Isolation: Minimum 1500 VDC
  • Power Consumption: Less than 10 watts
• Physical & Environmental Parameters
  • Operating Temperature: -40°C to +85°C
  • Humidity Adaptability: 0 – 95% non-condensing
  • Protection Grade: IP67
  • Weight: Approximately 1500g
  • Appearance Identification: Dark blue color coding for easy system identification
• Functional & Interface Parameters
  • Communication Interface: Compatible with Modbus TCP/IP and TriBus for seamless connection to Triconex SIS
  • Response Time: ≤2ms
  • Installation Matching: Compatible with termination panels such as 9662 – 610 commoned term panels

Advantages & Features

1. Reliable Redundant Voting Design: TRICONEX 3664 adopts a 2oo3 voting mechanism. When processing output signals, it verifies and confirms through three internal channels. If one channel fails, it can automatically shield error data, ensuring that the output signal is accurate and reliable, which effectively avoids safety accidents caused by module faults.
2. Comprehensive Diagnostic Capabilities: TRICONEX 3664 is equipped with voltage loopback diagnostics and per-channel state monitoring. It can detect latent faults such as stuck-on or stuck-off output points in a timely manner. At the same time, it has load and fuse alarm indicators, which can send out alarms for field voltage mismatches and help maintenance personnel quickly locate problems.
3. Hot-swap and Online Maintenance: TRICONEX 3664 supports hot-spare capability and online module replacement. During the operation of the industrial system, faulty modules can be replaced without shutting down the entire system, which greatly reduces unplanned downtime and ensures the continuity of the production process.
4. High Compatibility and Easy Installation: The module is designed with mechanical keying to prevent incorrect installation. Its dark blue color coding allows engineers to quickly identify it in complex control cabinets. In addition, it can be flexibly integrated with Triconex series safety control systems and is suitable for de-energize-to-trip control programs, with strong adaptability.

Application Fields & Cases

1. Oilfield Emergency Shutdown System: A large oilfield in the Middle East installed TRICONEX 3664 in the emergency shutdown system (ESD) of its wellhead platform. When a gas leakage was detected by the field sensor, the module quickly output a control signal within 2ms to close the wellhead isolation valve. The 2oo3 voting mechanism of TRICONEX 3664 ensured that the signal was not distorted due to a single channel failure, successfully avoiding a major explosion accident.
2. Chemical Plant Fire & Gas System: A petrochemical plant integrated TRICONEX 3664 into its fire & gas (F&G) system. The module’s 32 output channels controlled multiple sets of fire sprinklers and gas exhaust devices at the same time. During a sudden ethylene leakage incident, the module accurately triggered the corresponding fire protection equipment according to the logic command. Its self-diagnostic function also promptly alerted the maintenance team to a slightly abnormal output channel, ensuring the system’s subsequent stable operation.
3. Thermal Power Plant Burner Control: A thermal power plant applied TRICONEX 3664 to the burner management system (BMS). The module controlled the on-off of the burner fuel supply valve and ignition device. When abnormal combustion was detected, it immediately cut off the fuel output and activated the safety shutdown process. Its hot-swap feature once enabled technicians to replace a faulty module during the unit’s low-load operation without affecting the normal power generation of the unit.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: TRICONEX 3664 is the preferred choice for high-risk industries such as oil & gas, chemical, and nuclear power that require SIL 3 certification and high-density output control. For small-scale safety systems with fewer output points, TRICONEX 3674 (a simplified version of the digital output module) can be selected as a cost-effective alternative. In marine or offshore applications, it is recommended to match it with a waterproof termination panel to maximize its IP67 protection performance.
2. Precautions
   • It is necessary to connect the field power supply to each output point separately, and use cables that meet the voltage and current specifications to avoid signal instability caused by insufficient wire diameter.
   • The module must be used with a dedicated external termination panel (ETP), and mechanical keying should be checked during installation to prevent incorrect assembly.
   • Regularly check the module’s status indicators. When a fault alarm is received, analyze the diagnostic logs in a timely manner. Do not arbitrarily replace the module during the system’s critical operation period even if it supports hot-swap.
   • Avoid installing it in an environment with strong electromagnetic interference, and maintain a certain distance from high-voltage equipment to prevent damage to the isolation performance of the module.vvvvv

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