Rockwell Automation T8473 User Manual

SDS-8473

TrustedTM Industrial Control System

Trusted

TMR 120V ac Isolated Digital Output Module-T8473

FRONT PANEL

T8473 Trusted TMR 120 Vac Isolated Output

DESCRIPTION

The Trusted Output module interfaces to 16 field output devices. Each output is isolated. Fault tolerance is achieved through Triple Modular Redundancy (TMR) within the same module for each of the 16 output channels.

The module provides on-board Sequence of Events (SOE) reporting with a resolution of 1ms. The “event” is the actual sensing of the field device loop current. Each triplicated section (slice) of the module receives output data from the Trusted

TMR 120V ac Digital

TMR

Processor and sends its data to an internal safety layer hardware voter. Each slice uses the voted data to control the outputs. Every output channel consists of a four-element voted array. The output switch array provides fault tolerant, uninterrupted control under an output switch failure condition. Output switching and fault diagnostics comply with the demanding requirements of IEC61508 SIL-3 for First Fault - Fault Tolerant, and Second Fault - Fail Safe outputs.

When a module fault is detected, the Trusted unhealthy condition, indicating the need to replace the module. Control continues until a replacement (healthy) module is available. Replacement modules can be located in a standby slot next to the module.

Each output is user configurable to perform line monitoring of the connected field devices to detect field wiring and load failures. Automatic over-current protection is inherent in every output circuit which eliminates the need for fuses.

Modules may be placed in any I/O module slot in a Trusted 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 running on an Engineering Workstation. Once configured and loaded into the Trusted replacement modules are on-line educated by the TMR Processor.

TMR Processor will flag the

Processor

Toolset

Controller,

FEATURES

 Triplicated TMR system

 16 Isolated Output Channels:

 Comprehensive, automatic

 Automatic line monitoring per

 2500Vdc optical and magnetic

 Automatic channel over-

 On-board Sequence of Events

 Module can be hot-replaced

 Front panel output status

 Front panel module status

 IEC 61508, SIL 3 safety

architecture, with fault tolerant output switching.

120VAC, 0.5A per channel.

diagnostics and self-test.

channel to detect open circuit field wiring / load faults and short circuit field wiring faults for energised outputs.

isolation barrier.

current protection, no fuses required.

(SOE) reporting with 1ms resolution.

on-line using dedicated ‘Companion Slot’ (adjacent slot).

LED’s for each channel indicate output status and field wiring faults.

LED’s indicate module health and operational mode (Active, Standby, Educated)

applications

Issue 2 Jan 2006

SDS-8473

Inter Module Bus

Trusted

Industrial Control System

Trusted

TMR 120V ac Isolated Digital Output Module-T8473

BLOCK DIAGRAM

TMR

SLICE ‘A’

TMR

SLICE ‘B’

SLICE ‘C’

TMR

(Quad Voters)

FIU-QA V

OTER

FIU-QB VOTER

FIU-QC VOTER

FIU-QD VOTER

}

HIU FIU

TMR

2500V dc

ISOLATION

ELECTRICAL SPECIFICATION

Number of Outputs Field Common Isolation

Sustained Working ±250V dc

Maximum Withstanding ±2.5kV dc

Channel to Channel Isolation

Sustained Working ±250V dc

Maximum W ithstanding ±1000V dc Output Voltage Field Supply

Operational Range 90 to 150V ac, 47Hz < freq < 63Hz

Measurement Range 0 to 150V ac rms

Maximum Withstanding 0 to 175V ac rms

Output Maximum Current Rating

Per Channel 0.5A (8A peak, 1 AC cycle)

Power Consumption Output Turn On/Off Delay Self-Test Interval Output Short Circuit Protection Fusing Intrinsic Safety Circuit Type

Quad Element

Switches

QA QB

QC QD

FTU

16 Channels

20W

1.5 AC cycle max. 2 minutes Automatic Not required External barrier Fault tolerant

Switched

Channel

Field

Output

MECHANICAL SPECIFICATION

Dimensions (HxWxD):

241mm x 30mm x 300mm (9.5ins x 1.2ins x 11.8ins)

Weight:

1.35kg (2.98lbs)

ENVIRONMENTAL

Operating Temperature:

-5°C to 60°C (23°F to 140°F)

Operating Humidity:

5 to 95%, noncondensing

Vibration:

10 to 57Hz ±0.075mm 57 to 150Hz 1.0g

Shock:

15g, ½ sine wave, 11ms

EMI (IEC 801):

ESD Air discharge to 15kV Contact discharge to 8kV

Radiated Fields 10V/m, 27MHz to 500MHz

Transients and Bursts 2kV, 2.5kHz for t=60 seconds

ICS Triplex

Technical data sheets are intended for information and guidance. The Company has a policy of continual product development and improvement. Specifications are subject to change without notice. For latest information, visit our Websi te:- www.icstr iple x.com