Core High-Density Safety Input Interface
The Triconex DI3301 is a 32-channel digital input module designed for Triconex Safety Instrumented Systems (SIS). This high-density module interfaces with field devices like switches and sensors using a common 24VDC signal. It converts the on/off state of these devices into reliable digital data for the safety controller. Consequently, it is a critical component for monitoring plant conditions and safety interlocks in high-availability processes.
Advanced Diagnostics and Signal Integrity
This module incorporates Force-to-Value Diagnostic (FVD) technology to verify input circuit integrity. It ensures detection of field wiring faults or sensor failures within 2 milliseconds of the test. The DI3301 features a fast ADC scan time of less than 1 millisecond for all 32 points. Furthermore, it provides robust electrical isolation between the field inputs and the system logic for enhanced safety and noise immunity.
Detailed Technical Specifications
Engineered for precise threshold detection, the module defines clear on, off, and transition voltage regions. Its design minimizes power consumption while maintaining reliable operation across a wide input voltage range. The following table details its comprehensive electrical, timing, and isolation parameters.
| Parameter | Specification |
|---|---|
| Manufacturer / System | Triconex (Schneider Electric) / Safety Systems |
| Product Model | DI3301 |
| Module Type | Digital Input Module |
| Number of Channels | 32 (Commoned) |
| Nominal Input Voltage | 24 V DC |
| Operational Voltage Range | 15 – 30 V DC |
| Input Threshold (On Region) | 15 – 30 V DC |
| Input Threshold (Off Region) | 0 – 5 V DC |
| Input Delay | <10 ms (On/Off) |
| ADC Scan Time | <1 ms (all 32 points) |
| Input Impedance (with baseplate) | >3 kΩ |
| Input Power per Point | 0.2 W @ 24VDC |
| Diagnostic (FVD) Test Time | <2 ms |
| Isolation (Field to Logic) | 800 V DC minimum |
| Isolation (Field to Protective Earth) | 500 V DC minimum |
Application in Critical Safety Loops
Install this module in Triconex safety racks to monitor emergency stop buttons, pressure switches, and flow sensors. Its advanced diagnostics are essential for maintaining the required Safety Integrity Level (SIL) of the safety loop. The Triconex DI3301 is a key element in building reliable and certifiable safety systems. Therefore, it is widely used in oil and gas, chemical, and power generation industries where safety is paramount.
Details
| Weight | 2.85 kg |
|---|---|
| Dimensions | 41.2 × 17.8 × 6.2 mm |
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