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Rockwell Automation T8431 Trusted TMR 24Vdc Analogue Input Module - 40 Channel User Manual

Tmr 24vdc analogue input module – 40 channel, Introduction, Trusted

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Trusted

TM

PD-T8431

Issue 16 Sep 11

PD-T8431

1

Trusted

TM

TMR 24Vdc Analogue Input

Module – 40 Channel

Introduction

The Trusted

TM

TMR 24V dc Analogue Input module interfaces to 40 sourcing field input devices, acting

as a current sink for all these devices. Comprehensive diagnostic tests are performed on each input
channel. Fault tolerance is achieved through a Triple Modular Redundant (TMR) architecture within the
module for each of the 40 input channels.

Using the built-in line-monitoring feature, the module can detect open and shorted field cables. Line
monitoring functions are independently configured for each input channel.

The module provides on-board Sequence of Events (SOE) reporting with a resolution of 1ms. A
change of state triggers an SOE entry. States are determined by voltage thresholds that can be
configured on a per channel basis. When the field voltage and field return are connected to the
auxiliary input channels of the module, thresholds can be specified as a ratio of the field supply voltage.

Features

• 40 Triple Modular Redundant (TMR) input channels per module.
• Comprehensive, automatic diagnostics and self-test.
• Selectable line monitoring per channel to detect open circuit and short circuit field wiring

faults.

• 2500Vdc opto/galvanic isolation barrier.
• On-board Sequence of Events (SOE) reporting with 1ms resolution.
• Module can be hot-replaced on-line using dedicated Companion (adjacent) Slot or

SmartSlot (one spare slot for many modules) configurations.

• Front panel input status LEDs for each channel indicate input status and field wiring

faults.

• Front panel module status LEDs indicate module health and operational mode (Active,

Standby, Educated)

• T

:

V Certified IEC 61508 SIL 3