3501E/3501T| Triconex |TMR Digital Input Module

Description

The 3501E/3501T is a high-reliability digital input (DI) module designed for safety-critical applications. It features triple-modular redundancy (TMR) to ensure maximum availability and safety. The module has three isolated input channels that independently process all data, ensuring the highest integrity of input signals. Each channel conditions signals independently and provides optical isolation between the field and the Tricon system.

Features

• Triple-Modular Redundancy (TMR): Ensures operation in the presence of single faults.
• Voltage Options: 115 VAC/VDC
• Non-Commoned, Isolated Points: 32 points, enhancing safety and reliability.
• Enhanced Diagnostics: Continuous self-tests and fault detection.
• Hot-Spare Support: Ensures continuous operation during failures.
• Mechanical Keying: Prevents improper installation.
• Diagnostic Indicators: PASS, FAULT, ACTIVE status per point.

Technical Specifications

• Model Number: 3501E/3501T
• Type: TMR (Triple Modular Redundant)
• Voltage: 115 VAC/VDC
• Points: 32, non-commoned, isolated
• AC Range/DC Range: 90-155 VAC/VDC
• Frequency Range: DC or 47-63 Hz
• Maximum Voltage: 155 VAC/VDC
• Switching Level:
  • OFF to ON: > 86 VAC/VDC
  • ON to OFF: < 28 VAC/VDC
• Nominal Turn-On Current: 6-9 mA
• Typical Hysteresis: 32 VAC/VDC
• Input Delay:
  • OFF to ON: < 8 ms
  • ON to OFF: < 15 ms
• Point Isolation: 1500 VDC (3501E), 2500 VDC (3501T)
• Nominal Input Impedance: > 8.5 KΩ
• Nominal Field Power Load:
  • Per ON point @ maximum field voltage: 1.5 watts (3501E), 2.9 watts (3501T)
• Diagnostic Indicators:
  • Input Status: 1 per point
  • Module Status: PASS, FAULT, ACTIVE
• Stuck Test: Not applicable
• Color Code: Red