Rockwell Automation T8310 Trusted Expander Processor - Manual

SDS-8310
Trusted
TM Industrial Control System
Trusted TM Expander Processor-T8310
Issue 5 Jan 2006
FRONT PANEL
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Active
Standby
TxRx A
TxRx B
TxRx C
Healthy
DESCRIPTION
The Trusted
TM TMR Expander Processor
module resides in the processor slots of the
Trusted
TM Expander Chassis and provides the
‘slave’ interface between the Expansion Bus
and the Expander Chassis backplane. The
Expander Bus allows multiple chassis systems
to be implemented using UTP cable
connections whilst maintaining the fault
tolerant, high bandwidth Inter-Module Bus
(IMB) capabilities.
The module provides fault containment
for the expander bus, the module itself
and the expander chassis, ensuring that
the effects of these potential faults are
localised
and system availability
maximised. The module is fault tolerant
with Hardware Implemented Fault
Tolerant
(HIFT), Triple Modular
Redundant (TMR) architecture.
Comprehensive diagnostics, monitoring
and
testing provide rapid fault
identification. Hot standby and module
spareing configurations are supported,
allowing automatic and manual repair
strategies.
Communication between the Expander
Processor and the TMR Processor is via
the TMR Expander Interface Module
and the triplicated 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.
Communication between the Expander
Processor and the I/O modules in the
Expander Chassis is via the IMB on the
backplane of the Expander Chassis.
The IMB is identical to that within the
Controller Chassis, providing the same
fault
tolerant, high bandwidth
communications between the interface
modules and the TMR Processor. As
with the Expander Bus Interface all
transactions are voted, localising faults
to Fault Containment Region (FCR)
within the IMB should they occur.
The TMR Expander Processor Module
derives its internal voltages from dual
redundant +24V dc power supplied via
the
module connector from the
Trusted TM Expander Chassis backplane.
Each FCR derives the required supplies
independently.
Non-critical monitoring
and module status display
functions
(front panel
LEDs) are also provided.
FEATURES
Triple Modular
Redundant (TMR),
fault tolerant (3-2-0)
operation
Hardware
Implemented Fault
Tolerant (HIFT)
architecture
Dedicated hardware
and software test
regimes which
provide fast fault
recognition and
response times
Automatic fault
handling without
nuisance alarming
Hot replacement
Front panel status
LEDs