Triconex 3674 is a Dual Digital Output (DDO) module used in Tricon Safety Instrumented Systems (SIS).
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Triconex 3674 is a Dual Digital Output (DDO) module used in Tricon Safety Instrumented Systems (SIS). It is designed for safety-critical industrial applications such as emergency shutdown (ESD), burner management, and process protection in oil & gas, chemical, and power generation industries.
| Parameter | Specification |
|---|---|
| Model | TRICONEX 3674 |
| Module Type | Dual Digital Output Module |
| Output Channels | 32 |
| Nominal Voltage | 24 VDC |
| Operating Voltage Range | 16–30 VDC |
| Maximum Voltage | 36 VDC |
| Output Current | 2 A per point |
| Surge Current | 10 A for 10 ms |
| Isolation | 1500 VDC minimum |
| Logic Power | <10 W |
| Operating Temperature | Typically 0°C to 60°C |
| Diagnostics | Pass, Fault, Active, Load/Fuse alarms |
| Mounting | Tricon chassis installation |
| Safety Use | SIS / ESD applications |
The 3674 module receives commands from the Tricon controller and drives field devices such as:
It includes built-in diagnostics that continuously monitor output integrity and can detect:
The module is optimized for de-energize-to-trip safety strategies. Official Tricon documentation notes that Models 3664 and 3674 are not recommended for energize-to-trip applications because certain hardware faults could force outputs into a de-energized state.