Triconex 3626X - Triple Redundant Universal I/O Module with Extended Capabilities

Triconex 3626X – Triple Redundant Universal I/O Module with Extended Capabilities

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Product Introduction:
The Triconex 3626X is a versatile universal I/O module for Triconex Safety Instrumented Systems. The “3626” designates it as a combined analog and discrete I/O module, while the “X” suffix indicates an expanded or enhanced version with additional channels, higher resolution, or extra features compared to the standard 3626. This board provides both analog inputs (for temperature, pressure, flow) and discrete inputs/outputs (for switches and valves) on a single module, reducing the total number of slots required in the Triconex controller. The TMR architecture ensures SIL 3 safety certification for all I/O channels. The 3626X is the “Swiss Army Knife” of Triconex I/O, used when space is at a premium but I/O diversity is required.

Technical Specifications:
Board Type: Triple Redundant Universal I/O Module (Analog + Discrete)
Model: 3626X (Enhanced)
Analog Inputs: 8 channels (4-20mA, 1-5V, RTD, Thermocouple)
Analog Outputs: 4 channels (4-20mA, 0-10V)
Discrete Inputs: 8 channels (dry contact or 24V DC)
Discrete Outputs: 8 channels (relay or transistor)
Resolution: 16-bit A/D and D/A conversion
Scan Rate: 10ms for analog, 1ms for discrete
Isolation: 1500V RMS channel-to-channel
Redundancy: Full TMR with 2-out-of-3 voting
Diagnostics: Per-channel burnout, wire break, short circuit, stuck-at, coil supervision
Operating Temperature: 0 to 60 degrees Celsius
Form Factor: Triconex standard module
Power Consumption: Approximately 8 Watts
Certifications: SIL 3, IEC 61508, ATEX

Functional Features:
Mixed I/O on One Board: Combines 8 analog inputs, 4 analog outputs, 8 discrete inputs, and 8 discrete outputs on a single module, saving valuable rack space.
Flexible Configuration: Each channel is independently configurable as input or output, analog or discrete, via software.
High-Resolution Analog: 16-bit resolution provides laboratory-grade accuracy for safety-critical measurements.
Coil Supervision on All Outputs: Every discrete output has coil supervision, and every analog output has burnout detection.
Hot Swappable: Can be replaced without shutting down the safety system.
Reduced Wiring: Fewer modules mean fewer backplane connections and less wiring complexity.

Application Scenarios:
Skid-Mounted Systems: Ideal for compact skid-mounted safety systems where rack space is limited.
Retrofit Projects: Replaces multiple older modules (separate AI, AO, DI, DO) with a single modern universal board.
Small Safety Loops: Used in small to medium safety systems (under 50 I/O points) where a full rack of separate modules is not justified.
Remote I/O Racks: Serves as the main I/O interface in remote Triconex racks located near the field.

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