Triconex 3664 is a 24 VDC dual digital output module, belonging to the digital output module series of the Tricon controller. It is designed for safety-critical industrial control systems and provides redundant output functions to ensure system reliability. Its core feature is the adoption of a dual-output channel architecture, supporting online hot swapping, and is suitable for scenarios requiring high availability and fault tolerance.
Specification Parameters
Electrical Characteristics
Rated Voltage: 24 VDC
Output Points: 32 points (32 output channels in total, supporting commoned configuration)
Output Type: Dual Output. Each point uses a series path and supports the 2-out-of-3 voting mechanism.
Current Driving Capability:
Maximum Continuous Current: 1.7 A per point (typical value)
Inrush Current: 5 A/7 ms
Load Impedance: Supports resistive and inductive loads (specific limitations shall be confirmed with reference to the module specification sheet).
Isolation Characteristics: System-to-field isolation voltage ≥1500 VDC
Status Indicators
Pass: Green, indicating normal module operation.
Fault: Red, indicating internal faults detected by the module.
Active: Yellow, indicating the module is in an active state.
Load/Fuse: Yellow, indicating load faults or blown fuses (only applicable to supervised outputs).
Diagnostic Functions
Output Voter Diagnosis (OVD): Supports diagnosis of potential faults in the output circuit and can be disabled via software (requires periodic activation to ensure safety).
Loop Detection: Supports voltage and current loop detection to identify open-circuit or short-circuit faults.
Physical Characteristics
Dimensions: Consistent with Tricon standard chassis dimensions (chassis specifications shall be referenced).
Mounting Method: Plug-in module supporting hot-swappable (needs to be used with a hot-standby module).
Weight: Approximately 4.75 lbs (2.1–2.7 kg, similar to other I/O modules).
Application Scope
Industry Applications
Industrial Automation: Safety Instrumented Systems (SIS) in industries such as chemical, oil & gas, and power.
Critical Control Scenarios: Emergency Shutdown Systems (ESD), Burner Management Systems (BMS), and Process Control Systems (PCS).
Redundancy-Required Occasions: High-availability output control forions: High-availability output control for applications like valve actuation and motor start/stop.
Functional Adaptation
Redundancy Architecture: Supports dual-module hot-spare configuration, enabling online replacement of faulty modules without impacting system operation.
Safety Standards: Compliant with functional safety standards such as IEC 61508 (SIL 1–3) and DIN V 19250, suitable for safety-related systems.
Communication Compatibility: Can be integrated with Tricon v9–v10 system main processors (e.g., 3008, 3006/3007) and communication modules (e.g., TCM, EICM).
Environmental Requirements
Operating Temperature: 0°C – 60°C (32°F – 140°F)
Storage Temperature: -40°C – 75°C (-40°F – 167°F)
Humidity: 5% – 95% (non-condensing)
Vibration/Shock: Compliant with IEC 60068-2-6 (vibration) and IEC 60068-2-27 (shock) standards
Limitations and Precautions
Configuration Limitations
Cannot be mixed with other digital output module models (e.g., 3601E/T, 3614E, etc.) in the same logic slot.
Module parameters (such as output type, diagnostic cycle, etc.) must be configured via TriStation software.
Safety Precautions
Alarm contacts of the module are prohibited from being used in hazardous areas (e.g., explosion-proof environments); refer to ATEX/IECEx certification requirements.
When the module fails, field wiring issues must be eliminated first before replacing the module (refer to the "Replacing I/O Modules" procedure in the documentation).
Maintenance Recommendations
Perform regular functional tests (such as OVD activation tests) to ensure the reliability of the output circuit.
Spare modules should be periodically rotated to the online state for self-checking to avoid long-term idle-related failures.
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