Triconex 3720 Analog Input Module | 64-Point TMR AI

Product Introduction

The 3720 Analog Input Module from Triconex delivers high-density signal acquisition with Triple Modular Redundant architecture. This advanced module processes 64 single-ended analog inputs with exceptional speed and precision. The 3720 supports both voltage and current signals while maintaining robust diagnostic capabilities for critical control applications.

Core Specifications

• Brand: Triconex
• Model Identification: 3720 Analog Input Module
• Module Architecture: TMR Analog Input
• Input Capacity: 64 single-ended channels
• Voltage Range: 0-5VDC with +6% tolerance
• Current Range: 0-20mA with 250Ω shunt
• Update Speed: 10 millisecond scan rate
• Isolation: Fully isolated input points

Signal Performance

• Resolution: Programmable 12-bit or 14-bit selection
• Accuracy: Better than 0.15% Full Scale Range
• Temperature Range: 0° to 60°C operational environment
• Input Impedance: 10 MΩ minimum DC load resistance
• Power-Off Resistance: 140 kΩ typical isolation
• Overrange Protection: 150 VDC/115 VAC continuous

Input Characteristics

• Configuration: 64 single-ended input channels
• Signal Types: Voltage (0-5VDC) and Current (0-20mA)
• Current Measurement: 250Ω shunt resistor included
• Overrange Capacity: +6% signal over-range capability
• Isolation: Channel-to-channel and system isolation
• Wiring: Single-ended input configuration

Noise Rejection

• Normal Mode Performance: -3 dB @ 8Hz
• Line Frequency Rejection: -17 dB @ 60Hz
• Harmonic Rejection: -23 dB @ 120Hz
• Leg-to-Leg Isolation: 420 kΩ typical resistance
• Common Mode: Not applicable for single-ended design

Conversion Performance

• Scan Rate: 10 milliseconds for all 64 channels
• Resolution Options: 12-bit (4096 steps) or 14-bit (16384 steps)
• Accuracy Class: <0.15% FSR across temperature range
• Signal Conditioning: Programmable input scaling
• Data Integrity: TMR voting on all input conversions

Frequently Asked Questions

• How many input channels are provided?

64 single-ended analog input channels with individual isolation.

• What signal types does the module accept?

0-5VDC voltage signals and 0-20mA current inputs with shunt.

• What is the module's update rate?

10 millisecond complete scan of all 64 input channels.