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TRICONEX 3625
32-Channel 24VDC Supervised Digital Output Module for Tricon TMR SIS

The TRICONEX 3625 is a 32-channel 24VDC Supervised Digital Output (DO) module designed for the Triconex Tricon Triple Modular Redundant (TMR) Safety Instrumented System (SIS).

Engineered for high-integrity safety applications, the module integrates TMR triple redundancy, output loop supervision, SIL 3 certification, and hot-swappable capability, making it ideal for critical circuits such as Emergency Shutdown (ESD) systems and safety interlocks.

1. Core Positioning & System Adaptation

Model: TRICONEX 3625

Module Type: 32-Channel 24VDC Supervised / Unsupervised Digital Output

System Compatibility: Triconex Tricon TMR Fault-Tolerant Control System

Safety Integrity Level: SIL 3 (IEC 61508 / IEC 61511 compliant)

Lifecycle Status: Active / Mainstream production

Typical Applications:

Emergency Shutdown (ESD) systems

Safety valve actuation

Pump and motor safety start/stop

Alarm and annunciation circuits

2. Key Technical Specifications
2.1 Output Characteristics

Number of Channels: 32 digital outputs

Nominal Output Voltage: 24 VDC

Operating Voltage Range: 16–32 VDC

Maximum Voltage: 36 VDC

Maximum Continuous Current (per channel): 1.7 A

Surge Current Capability: 7 A (10 ms)

Minimum Load Requirement: 10 mA (ensures reliable supervision and shutdown)

Leakage Current: ≤ 4 mA

Voltage Drop: < 2.8 VDC @ 1.7 A (typical)

Isolation: 1500 VDC (field side to system side)

Output Supervision Features:

Open-circuit detection

Short-circuit detection

Real-time output loop integrity monitoring

2.2 Architecture & Reliability

Redundancy Architecture:

Triple Modular Redundancy (TMR)

2-out-of-3 (2oo3) voting mechanism

No single point of failure

Hot Swap Capability:

Supported

Online replacement without system shutdown

Diagnostics:

Independent per-channel diagnostics

Status indicators: PASS / FAULT / LOAD / ACTIVE LOAD

Module-level status indication

Response Time: < 1 ms

2.3 Electrical & Mechanical Specifications

Power Consumption: < 13 W

Operating Temperature: −40 °C to +70 °C

Installation: Standard Tricon rack mounting

Weight: Approx. 3.0 kg

3. Typical Application Scenarios
Emergency Shutdown Systems (ESD)

Safety interlocks for reactors, compressors, and storage tanks

Critical shutdown circuits in oil, gas, and chemical processing

Safety Valve Control

Emergency shut-off valves (ESV)

Vent valves

Isolation valves

Equipment Protection

Pumps

Motors

Fans

Fault trip and safe shutdown control

Alarm & Indication Circuits

Safety alarm lamps

Audible alarms (buzzers)

Critical status indication outputs

TRICONEX 3625｜Digital Output Module｜