Triconex DI3311 Digital Input Module

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The Triconex DI3311 Digital Input Module is a high-integrity digital input module built for use in safety-critical environments, such as oil & gas, power generation, and chemical processing.
It belongs to the Tricon v10/v11 series and leverages Triple Modular Redundancy (TMR) architecture to ensure maximum system reliability and fault tolerance.
Featuring 32 commoned input channels, the module offers accurate digital signal processing along with advanced diagnostics and fast fault detection.
Designed for rugged industrial use, the DI3311 supports hot-swapping, allowing module replacement without system shutdown, and seamlessly integrates within Triconex safety systems.

Parameter	Specification
Model Number	DI3311
Module Type	Digital Input Module
Input Channels	32 (commoned)
Nominal Input Voltage	24 VDC
Operational Voltage Range	15–30 V DC
Absolute Maximum Input Voltage	33 VDC
Reverse Voltage Protection	–0.6 VDC
Input Delay (On ↔ Off)	< 10 ms
Input Impedance	> 30 kΩ (without baseplate), ≈ 3 kΩ (with baseplate)
Input Power Consumption	0.2 W per point @ 24 VDC; 0.5 W per point @ 33 VDC
Input Voltage Thresholds	0–5 V = Off, 6–14 V = Transition, 15–30 V = On
Diagnostics (Force-to-Value, FVD)	< 2 ms per test cycle
Maximum Input Toggle Rate for FVD	< 20 toggles/sec
FVD Off-State Glitch	< 2 ms duration; ~36% of test voltage
ADC Scan Time (all 32 points)	< 1 ms
Isolation – Functional to Protective Earth	≥ 500 VDC
Isolation – Functional to Functional Earth	≥ 800 VDC (Logic)
Dimensions	~12.5 cm × 17 cm × 14.2 cm
Weight	~2.1 kg
Operating Temperature Range	Approximately 0 °C to +60 °C
Hot-Swappable Design	Yes
Country of Origin	USA

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