ICS Triplex T8311 TMR Expander Interface

The T8311 TMR Expander Interface is a fault tolerant design based on TMR architecture arranged in a lockstep configuration.The TMR Expander Interface Module derives its internal voltages from dual redundant +24V dc power supplied via the module connector from the TrustedTM Controller Chassis backplane. Each FCR derives the required supplies independently.

 

 

Manufacture	ROCKWELL ICS TRIPLEX
Model	T8311
Part Number	T8311
Description	Trusted TMR Expander Interface
Origin	USA / Mexico
Dimension	30*28*5cm
Weight	1.15kg

 

Each TMR Expander Interface Module contains a Bus Interface, isolation components and transceivers to the Expander Bus. The triplicated Expander Bus provides communication interconnection between the TMR Processor Chassis and the Expander Chassis at a data transfer rate of 1.5GMbps via UTP cables.

Each TMR Expander Interface Module FCR contains a Bus Interface to the Inter-Module Bus. The triplicated Inter-Module Bus provides communication interconnection between modules in the TMR Controller Chassis, at a data transfer rate of up to 12.5Mbps

 

Communication between the module and the TMR Processor is via the IMB on the backplane of the Controller Chassis. The IMB provides fault tolerance and high bandwidth communications between the Interface Modules and the TMR Processor. All transactions are voted, localising faults to the IMB should they occur.

 

Communication between the Interface Module and the TMR Expander Processor in the Expander Chassis is via the Expander Bus. The Expander Bus is triplicated, point-to-point architecture. Each channel of the Expander Bus comprises separate command and response media. Voting is provided at the Expander Bus Interface to ensure that cable faults are tolerated, and the remainder of the Expander Processor operates in a fully triplicated mode, even in case of cable faults occurring.

 

A fourth FCR (FCR D) provides the non-critical monitoring and display functions and is also part of the inter-FCR Byzantine voting structure.

Isolation is provided between FCRs wherever interfaces are required, to ensure that faults can not propagate between them.

 

The Expander Interface Modules may reside in any of the I/O slots within the Controller Chassis. The modules are installed in pairs with the left-hand module occupying an odd numbered slot. The Expander Interface must NOT be installed in these other module locations, as this may cause damage to the module.

 

The two Interface slots must be interconnected using the Expander Interface Adaptor Unit T8312.

 

The Expander Interface Modules are connected to the Expander Processor Modules by the Expander Interface Hot Link Cable TC-301 via the TrustedTM Expander Interface Adaptor Unit T8312.

 

The connection to remote Expander Chassis is via the TrustedTM Fibre Optic Tx/Rx Unit using the Expander Interface Adaptor to Fibre Tx/Rx Unit (Remote Expanders) Cable TC-302.

 

 

 

 

 

Before installation, visually inspect the module for damage. Ensure that the module housing appears undamaged and inspect the I/O connector at the back of the module for bent pins. If the module appears damaged or any pins are bent, do not install the module. Do not try to straighten bent pins. Return the module for replacement.

Record the module type, revision and serial number of the module before installation.

If the module is to reside in a new chassis, or the system is being configured for the first time, ensure that the chassis address has been set correctly before installing the modules. See Controller Chassis Product Description (PD-8100) for further details.

 

To install the module:

1. Ensure that the cable assembly is correctly located.

2. Release the ejector tabs on the module using the release key. Ensure that the ejector tabs are fully open.

3. Holding the ejectors, carefully insert the module into the intended slot.

4. Push the module fully home but pressing on the top and bottom of the module fascia.

5. Close the module ejectors, ensuring that they click into their locked position.