Rockwell Automation T8432 Trusted Dual Analogue Input Module - Manual

SDS-8432
Trusted TM Industrial Control System
Trusted TM Dual Analogue Input Module-T8432
Issue 5 Jan 2006
FRONT PANEL
DESCRIPTION
The Trusted
TM Dual Analogue Input
module interfaces to 60 single-ended
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 Dual
Redundancy within the same module
for each of the 60 input channels.
The module can apply a digital filter to
each
input channel. Individual
channels can be configured for high
noise immunity (50Hz or 60Hz
rejection), low noise immunity (fast
response), or pass-through operation
(no filtering).
Each input channel has four
configurable state thresholds which
may be assigned to SOE reporting. A
change of state triggers an SOE
entry. The on-board Sequence of
Events (SOE) reporting has a
resolution of 1ms.
Each dual 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 both slices to the
Trusted
TM TMR Processor. When a
fault is detected on a slice of the
module,
the Trusted TM TMR
Processor will flag the error,
indicating the need to replace the
module. The Trusted
TM TMR
Processor will continue to use the
information provided by the remaining
slice 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 TM
Termination Assembly.
Modules may be placed in any I/O
module slot in a Trusted TM 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
TM Toolset
running on an Engineering
Workstation. Once configured and
loaded into the Trusted
TM Controller,
replacement modules are on-line
educated by the TMR Processor.
FEATURES
60 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
Module fault and status
indicators
IEC 61508, SIL 3 safety
applications
Configurable per channel line
noise filter
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