Rockwell-automation T8403 Trusted TMR 24V dc Digital Input Module User Manual download pdf

SDS-8403

Trusted

Industrial Control System

Trusted

TMR 24V dc Digital Input Module-T8403

Issue 5 Jan 2006

FRONT PANEL

DESCRIPTION

The Trusted

TMR 24V dc Digital

Input module interfaces to 40 field

input devices. A wide input voltage

range and programmable thresholds

allow the module to be used in

current source and current sink

configurations. Comprehensive

diagnostic tests are performed on

each input channel, including tests for

stuck on and stuck off failures. Fault

tolerance is achieved through Triple

Modular Redundancy (TMR) within

the same module for each of the 40

input channels.

When a line-monitoring device is

installed at the field switch, the

module can detect open and shorted

field cables. Line monitoring can be

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 programmable

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

current field supply voltage.

Each triplicated section of the

module, referred to as a slice,

conditions and measures each

channel independently. Each slice is

opto-isolated up to 2500V dc. Each

slice sends its data to a safety layer

hardware voter that presents the

information from all three slices to the

Trusted

TMR Processor. When a

fault is detected on a slice of the

module, the Trusted

TMR

Processor will flag the error,

indicating the need to replace the

module. The Trusted

TMR

Processor will continue to use the

information provided by the remaining

two slices until a replacement module

is available. Replacement modules

can be located in a standby slot next

to the module or in a designated

SmartSlot with a temporary

connection to the same Trusted

Termination Assembly.

Modules may be placed in any I/O

module slot in a Trusted

Processor

Chassis or Expander chassis. Once

the I/O module configuration is set,

mechanical keying is available on all

I/O modules to prevent inserting a

module into an incorrect slot.

Configuration of the module is carried

out using the Trusted

Toolset

running on an Engineering

Workstation. Once configured and

loaded into the Trusted

Controller,

replacement modules are on-line

educated by the TMR Processor.

FEATURES

 40 TMR input channels per

module

 Comprehensive diagnostics

and self-test

 Line monitoring on a per

channel basis

 2500V dc Opto-Isolation

 On-board 1ms resolution

Sequence of Events reporting

 Hot replaceable

 Front panel status LEDs for

each channel

 Module fault and status

indicators

 IEC 61508, SIL 3 safety

applications

1 2

Summary of Contents

Page 1 - FEATURES

SDS-8403 TrustedTM Industrial Control System TrustedTM TMR 24V dc Digital Input Module-T8403 Issue 5 Jan 2006 FRONT PANEL DESCRIPTION The TrustedT

Page 2 - FIU HIUIFTU

SDS-8403 TrustedTM Industrial Control System TrustedTM TMR 24V dc Digital Input Module-T8403 ICS Triplex Technical data sheets are intended for info

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Rockwell-automation T8403 Trusted TMR 24V dc Digital Input Module User Manual

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