Triconex 3504E High Density Digital Input Module

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Description

The Triconex 3504E is a high-density, 64-point TMR digital input module for Tricon safety and critical-control systems. It accepts commoned, DC-coupled field inputs at nominal 24 VDC or 48 VDC. Triplicated input processing supports fault-tolerant operation, while point and module indicators provide clear local status information.

Triconex 3504E High Density Digital Input Module

Module Type

High-density digital input module

Architecture

Triple Modular Redundant (TMR)

Number of Inputs

64 points

Input Configuration

Commoned, DC-coupled

Nominal Input Voltage

24 VDC or 48 VDC

24 VDC Input Range

20–36 VDC

48 VDC Input Range

40–72 VDC

Over-range Protection

115 VAC continuous; 150 VDC continuous

24 VDC Off-to-On Level

15 VDC typical; 18 VDC worst case

24 VDC On-to-Off Level

8 VDC typical; 6 VDC worst case

24 VDC Hysteresis

4 VDC typical

48 VDC Off-to-On Level

27 VDC typical; 32 VDC worst case

48 VDC On-to-Off Level

14 VDC typical; 11 VDC worst case

48 VDC Hysteresis

7 VDC typical

Off-to-On Delay

Less than 10 ms

On-to-Off Delay

Less than 10 ms

Input Impedance

Greater than 30 kΩ nominal

Logic Power

Less than 10 W

Key Features

64-point high-density design increases input capacity while reducing the number of occupied chassis slots.

TMR architecture independently processes field signals through three input paths for dependable fault-tolerant operation.

Supports both 24 VDC and 48 VDC field circuits across defined operating ranges.

Input transition delays below 10 ms provide fast detection of changing field states.

Individual point LEDs make it easier to identify active inputs during commissioning and troubleshooting.

Pass, Fault and Active indicators provide immediate information about module health and operating status.

Continuous over-range protection helps protect the module against accidental excessive input voltage.

Applications

Emergency shutdown systems

Fire and gas detection systems

Burner management systems

Turbine and compressor protection

Valve and limit-switch monitoring

Pump and motor status monitoring

Oil and gas processing facilities

Refineries, chemical plants and power stations

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