The 3625C1 is a digital output module designed for use in Triconex / TRICON safety instrumented systems (SIS). These systems utilize Triple Modular Redundancy (TMR) architecture — a patented fault-tolerant design that ensures continuous safe operation even if internal components fail.

Module Type: Digital output I/O module

Purpose: Converts internal controller logic signals into field control signals to drive devices such as valves, relays, actuators, or other equipment.

Safety Architecture: TMR for high availability and SIL 3 capability (high functional safety rating).

Key Technical Specs (Typical)

Note: actual specs can vary by source/manufacturer or system configuration.

Input Voltage: ~24 VDC

Number of Outputs: Typically 16 digital output channels (isolated)

Output Current Rating: ~1.7 A per channel (varies slightly in different listings)

Nominal Voltage: 24 VDC (max ~36 VDC)

Operating Temperature: ~-40 °C to +70 °C (some sources list up to +85 °C)

Diagnostics: Self-monitoring with fault reporting and indications via LEDs or system software.

Communication: Works over Triconex backplane; some vendor listings mention Modbus/RS-485 or Ethernet support when integrated into wider systems.

Safety Standard Compliance: Designed for high integrity systems (SIL 3 per IEC 61508).

Typical Roles & Applications

The 3625C1 module is used in mission-critical automation where safety shutdowns and fault-tolerant control are essential:

Emergency Shutdown (ESD) systems

Burner Management Systems (BMS)

Process interlocks & safety loops

Distributed control systems with safety requirements

Industries like petrochemical, power generation, manufacturing, water treatment, etc.

Because it’s part of a TMR SIS architecture, it’s suited for environments where downtime is unacceptable and human/asset safety must be assured.

TRICONEX 3625C1｜Digital Output I/O Module｜