3720 Triconex TMR Analog Input Module | 64-Point 0–5V/0–20mA Input

Product Overview

The Triconex 3720 Analog Input Module delivers reliable 64-point TMR inputs for industrial automation and process control systems.

This module supports both voltage and current inputs with high accuracy and isolation for critical monitoring applications.

Engineers can download the datasheet to confirm wiring, input configuration, and diagnostic setup.

Global PLC Spare HUB's Insight

The 3720 provides precise data acquisition with programmable 12 or 14-bit resolution.

Its TMR architecture ensures redundant input integrity for safety-critical systems.

Diagnostic indicators PASS, FAULT, ACTIVE, and FIELD help engineers quickly identify module or channel issues.

Typical applications include power plants, process manufacturing, and industrial control networks.

Configuration Breakdown

• Model Number: 3720
  • Type: TMR Analog Input Module (AI)
  • Input Points: 64 single-ended
  • Input Voltage Range: 0–5 VDC ±6%
  • Current Input: 0–20 mA with 250 Ω shunt resistor ±6% overrange
  • Resolution: 12 or 14 bits programmable
  • Input Update Rate: 10 ms
  • Isolation: Leg-to-leg 420 kΩ typical

Technical Specifications

• Accuracy: <0.15% of FSR (0°–60°C)
• Input Resistance: 10 MΩ DC minimum
• Power-Off Resistance: 140 kΩ typical
• Normal Mode Rejection:
  • -3 dB @ 8 Hz
  • -17 dB @ 60 Hz
  • -23 dB @ 120 Hz
• Overrange Protection: 150 VDC / 115 VAC continuous
• Diagnostic Indicators: PASS, FAULT, ACTIVE, FIELD
• Color Code: Yellow
• Factory Condition: New & Original in Factory Packing
• Warranty: 12 Months

Installation Guidelines

• Mount in Tricon chassis with proper TMR slot assignment.
• Connect voltage or current inputs according to datasheet wiring diagram.
• Verify input range matches signal source to ensure accurate readings.
• Check diagnostic LEDs during commissioning for module integrity.
• Ensure isolated inputs are wired correctly to prevent crosstalk.

Diagnostic Capability

• Real-time monitoring of input points via PASS, FAULT, ACTIVE, FIELD indicators.
• Supports fault isolation without affecting other channels.
• Enables early detection of signal deviations in critical systems.
• Integrates with Triconex TMR systems for redundancy and safety assurance.
• Provides accurate logging of process variables for predictive maintenance.

Typical Applications

• Power generation control systems
• Industrial process monitoring and automation
• Safety-critical chemical or oil & gas plants
• Redundant TMR analog input systems
• High-density signal acquisition networks

Packing & Shipping

• 1 × Triconex 3720 Analog Input Module
• Factory packaging with inspection documentation
• Shipping via FedEx, UPS, DHL
• Fast 24–48 hour dispatch

FAQ

Can this module handle both voltage and current inputs simultaneously?

Yes, each input can be configured as voltage or current within the specified range.

How do I program 12-bit vs 14-bit resolution?

Use the Tricon configuration software to select desired resolution per channel.

What isolation features does the 3720 provide?

Leg-to-leg isolation is 420 kΩ typical, ensuring minimal crosstalk between inputs.

Is the module suitable for high-density signal applications?

Yes, 64 input points allow compact signal acquisition in TMR safety systems.

What should I check during commissioning?

Verify PASS, FAULT, ACTIVE, FIELD LEDs and correct input wiring for accurate operation.

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