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Rockwell Automation T8314 Trusted Fibre TR/TX Unit User Manual

Fibre tx/rx unit, Introduction, Trusted

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Trusted

TM

PD-T8314

Issue 10 Sep 08

PD-T8314

1

Trusted

TM

Fibre TX/RX Unit

Introduction

The Trusted

TM

Fibre TX/RX Unit T8314 is designed to extend the Trusted

TM

Expander Bus over

distances of up to 10km. This enables a Trusted

TM

Expander Chassis to be located remotely from the

Trusted

TM

system.

Note: It is recommended that if a remote Expander Chassis is to be located more than 2km from the

Controller Chassis, the route of the cable is surveyed.

The Expander Bus is extended by means of a communications link using a single mode fibre-optic
cable. The Trusted

TM

Fibre TX/RX Unit converts the differential signals of the copper-based Expander

Bus to a fibre-optic signal for transmission via the single mode cable. Three totally independent pairs
of Trusted

TM

Fibre TX/RX Units provide a non-interfering ‘Grey Channel’ approach to safety.

Features

• Dual 24V dc diode ORed power supply.
• Easy installation (Din rail mounting).
• Communications over a distance of 10km.
• Independent units therefore easily maintained.
• SC type connectors to two fibres (Tx & Rx).
• Low power consumption.