Triconex 3501E/3501T TMR Digital Input Module

The Triconex 3501E TMR Digital Input Module is designed for use in Tricon systems, providing high-integrity input processing through its Triple Modular Redundant (TMR) architecture. Each module has three isolated input channels that independently process and transmit data, ensuring the highest safety and availability by using voting at the main processors before processing the input data. The module supports optical isolation between field devices and the Tricon system, guaranteeing signal integrity.

Key Features:

• Triple Modular Redundancy (TMR): Each of the three channels processes data independently, ensuring high reliability and fault tolerance.
• Complete Diagnostics: Ongoing diagnostics for each channel; module fault indicators activate if any diagnostic failure occurs.
• Stuck-ON Detection: The module can self-test to detect stuck-ON conditions where an input might fail to switch OFF, an essential feature for safety systems.
• Hot-Spare Capability: Supports hot-spare functionality, ensuring continued operation even if one module fails.
• Optical Isolation: Provides signal conditioning and isolation between field devices and the Tricon system.

Specifications:

• Model Number: 3501E/3501T
• Type: TMR (Triple Modular Redundancy)
• Voltage: 115 VAC/VDC
• Points: 32 non-commoned, isolated points
• AC Range: 90-155 VAC
• DC Range: 90-155 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: 6-9 mA
• Typical Hysteresis: 32 VAC/VDC
• Input Delay:
  • OFF to ON: < 8 ms
  • ON to OFF: < 15 ms
• Point Isolation: > 1500 VDC/2500 VDC
• Nominal Input Impedance: > 8.5 KΩ
• Nominal Field Power Load:
  • Per ON point: 1.5 watts
  • At maximum field voltage: 2.9 watts
• Diagnostic Indicators:
  • Input Status: 1 per point
  • Module Status: PASS, FAULT, ACTIVITY
  • Stuck Test: Not applicable
• Color Code: Red

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