3301 Triconex TMR Digital Input Module | 32-Point DI with Diagnostics

Product Overview

The Triconex 3301 Digital Input (DI) Module delivers reliable 32-point TMR input processing for industrial automation and safety-critical systems.

Each channel independently processes field data, transmits it to its associated main processor (MP), and supports full voting logic for redundancy.

Download the datasheet for detailed wiring, diagnostics setup, and baseplate compatibility information.

Global PLC Spare HUB's Insight

The 3301 module supports continuous diagnostics for each channel and hot-spare operation.

Fault indicators identify channel-level issues rather than complete module failures.

Typical applications include safety interlocks, industrial digital signal acquisition, and process control with TMR redundancy.

Supports high-voltage or hazardous-location inputs via compatible external termination baseplates.

Configuration Breakdown

• Model Number: 3301
  • Type: TMR Digital Input Module (DI)
  • Input Points: 32 commoned
  • Nominal Input Voltage: 24 VDC
  • Operational Voltage Range: 15–30 VDC
  • Absolute Maximum Input Voltage: 33 VDC
  • Absolute Maximum Reverse Input Voltage: –0.6 VDC
  • Input Delay: <10 ms (On-Off / Off-On)
  • Input Impedance: >30 kΩ without baseplate, ~3 kΩ with baseplate

Technical Specifications

• Input Thresholds: 0–5 VDC Off, 6–14 VDC Transition, 15–30 VDC On
• Input Power: 0.2 W/pt @ 24 VDC, 0.5 W/pt @ 33 VDC
• FVD Diagnostic: <2 ms/test, maximum toggle rate <20/sec
• Functional Isolation:
  • Earth to Protective Earth: 500 VDC minimum
  • Logic Ground to Logic Ground: 800 VDC minimum
• ADC Scan Time: <1 ms for all 32 points
• Color Code: Yellow
• Factory Condition: New & Original in Factory Packing
• Warranty: 12 Months

Installation Guidelines

• Install module in TMR-configured Tricon chassis.
• Ensure correct mechanical keying to prevent misinstallation.
• Connect to compatible baseplates: Model 2301 or DI External Termination Baseplate.
• Verify nominal voltage and input wiring before energizing.
• Check PASS, FAULT, and ACTIVE LEDs during commissioning.

Diagnostic Capability

• Channel-level fault detection via continuous diagnostics.
• Force-to-value diagnostics (FVD) ensures input integrity.
• Hot-spare support allows system continuity with a backup module.
• Detects transitions reliably even with single faults.
• Provides early warning for multiple-channel anomalies.

Typical Applications

• Industrial safety interlock systems
• Redundant digital input acquisition for process plants
• High-voltage and hazardous-location signal monitoring
• TMR-based safety and control networks
• Power plants, chemical, and oil & gas facilities

Packing & Shipping

• 1 × Triconex 3301 Digital Input Module
• Factory packaging with inspection documentation
• Shipping via FedEx, UPS, DHL
• Fast 24–48 hour dispatch

FAQ

Can 3301 support hot-spare operation?

Yes, it supports hot-spare modules to maintain redundancy without downtime.

What baseplates are compatible with 3301?

Model 2301 and DI External Termination Baseplate for high-voltage or hazardous locations.

How fast does the module respond to input changes?

Input delay is less than 10 ms, with ADC scan time <1 ms for all 32 points.

How is channel fault detected?

Continuous diagnostics and FVD identify faulty channels without affecting the entire module.

Is it suitable for industrial TMR safety systems?

Yes, designed for TMR redundancy, ensuring reliable operation even with a single fault.

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