Description
Technical Specifications
- Product Model: 3625
- Brand: TRICONEX
- Warranty: One Year
- Input Voltage: 24 VDC nominal (1632 VDC range; 36 VDC max)
- Operating Voltage: <2.8 VDC drop @ 1.7A typical
- Operating Temperature: -40°C to +70°C
- Storage Temperature: -40°C to +85°C
- Response Time: <1 ms switching
- Protection Class: IP20
- Accuracy Class: SIL 3 certified TMR digital output
- Output Frequency: N/A (steady-state digital)
- Rated Current Range: 1.7A max per point; 7A surge (10 ms); 10 mA min load
- Communication Interface: Tricon backplane; TPN/Modbus/Ethernet/IP
- Supported Protocols: TMR supervised/non-supervised DO
- Overload Capacity: Self-protecting; 1500 VDC point isolation
- Dimensions: ≈150 × 120 × 50 mm; 2.06 kg
Product Overview
The TRICONEX 3625 is a 32-point TMR supervised/non-supervised digital output module for Tricon safety systems, converting voted processor commands into reliable 24 VDC switching for valves, solenoids, and actuators in SIL 3 ESD, Fire & Gas, and HIPPS applications. It receives identical signals from three main processors, applies 2oo3 voting through quadruplicated output switches, and drives field loads with voltage/current loopback diagnostics verifying switch health, field wiring, and load presence without affecting the output state. Engineers in oil & gas, refining, and power benefit from its 1.7A continuous (7A surge) capacity, <1 ms response, and self-protection eliminating external fusing needs. Commoned outputs with per-point status LEDs and module diagnostics (PASS/FAULT/ACTIVE/LOAD) enable predictive maintenance while maintaining 99.999% availability through hot-spare support and external termination panels. The 3625 powers safety interlocks with complete fault coverage for stuck switches, opens, shorts, and missing loads. (168 words)
Key Functions
Quadruple Output Switch Voting
Four independent power transistors per point vote 2oo3 on processor commands; loopback diagnostics verify switch operation without de-energizing loads. Single switch failure maintains output integrity.
Field Circuit Supervision
Voltage/current monitoring detects opens, shorts, and missing loads even when output is energized; LOAD alarm activates without process interruption. Extends SIL coverage to field wiring.
High Surge Capacity
7A capability (10 ms) handles solenoid inrush; self-protection prevents damage from stalled actuators or wiring faults. Voltage drop stays <2.8 V @ 1.7A across full load range.
Comprehensive Diagnostics
Per-point status LEDs plus module PASS/FAULT/ACTIVE/LOAD indicators; diagnostics feed Tricon event logger for maintenance planning without safety compromise.
Application Scenarios
ESD Valve Arrays
Refineries drive 32 isolation solenoids per card; supervision confirms coil health during bypass while TMR voting prevents partial strokes from processor faults.
Fire Deluge Systems
Platforms control deluge valves and pump starters; 7A surge overcomes starter inrush while field supervision verifies deluge readiness annually.
Turbine Trip Solenoids
Power plants actuate electro-hydraulic trip accumulators; <1 ms response meets overspeed protection timing while diagnostics log accumulator pressure confirmation.
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