Triconex 3401 | 16‑Channel Digital Output Module Rave reviews

Overview
The Triconex 3401 is a high‑availability digital output module designed for safety‑critical industrial systems. It supports triple modular redundancy (TMR) to ensure continuous operation even in the presence of faults. Brand: Triconex. Country of Origin: USA.

General Information
Part Number: 3401
Manufacturer: Triconex (Schneider Electric)
Brand: Triconex
Country of Origin: USA
Type: Digital Output Module
Channels: 16 commoned output points
Function: Converts logic signals into field digital outputs with fault tolerance and diagnostic capability

Power Specifications
Nominal Field Output Voltage: 24 V DC
Operational Voltage Range: 15 to 30 V DC
Absolute Maximum Output Voltage: 33 V DC
Reverse Input Voltage: –0.6 V DC
Output Current (Switching Mode): Typical 3.0 A, self‑limiting to <4.8 A
Output Current (Degraded Mode): Typical 1.5 A, self‑limiting >0.7 A
Leakage Current (Off State): <1 mA
On‑State Voltage Drop: <1.0 V DC at 1.5 A
Loop‑Back Scan Time: <1.0 ms for all 16 points

Communication & Interface
Signal Type: Digital logic to field digital output points
Architecture: Triple Modular Redundancy with one channel data voting mechanism for each output point
Diagnostics: Continuous monitoring for stuck‑on/stuck‑off conditions, faults detected in <500 ms
Interface: Backplane connection to Triconex I/O set; each module supports hot‑swap capability

Environmental
Operating Temperature: –20 °C to +70 °C
Storage Temperature: –40 °C to +85 °C
Humidity: 5% to 95% RH, non‑condensing
Isolation: Functional earth to protective earth ≥500 V DC; Functional‑earth to functional‑earth (logic) ≥800 V DC

Dimensions & Weight
Dimensions: 132 × 100 × 220 mm
Weight: Approx. 0.9 kg

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