Product Overview

The Trusted® TMR 24 Vdc Digital Output Module interfaces to 40 field

devices. Triplicated diagnostic tests are performed throughout the Module

including measurements for current, and voltage on each portion of the voted

output channel. Tests are also performed for stuck on and stuck off failures.

Fault tolerance is achieved through a Triple Modular Redundant (TMR)

architecture within the Module for each of the 40 output channels.

Automatic line monitoring of the field device is provided. This feature enables

the Module to detect both open and short circuit failures in field wiring and

load devices.

The Module provides onboard Sequence of Events (SOE) reporting with a

resolution of 1 ms. An output change of state triggers an SOE entry. Output

states are automatically determined by voltage and current measurements

onboard the Module.

This Module is not approved for direct connection to hazardous areas and

should be used in conjunction with Intrinsic Safety Barrier devices.