Owner manual

Trusted
TM
Module T8433
Issue 11 Apr 10 PD-T8433 8
1. Description
The TMR Isolated 4-20 mA Analogue Input module is a member of the Trusted
TM
range of Input/Output
(
I/O) modules. All Trusted
T
M
I
/O modules share common functionality and form. At the most general
level, all I/O modules interface to the Inter-Module Bus (IMB) which provides power and allows
communication with the Trusted
TM
TMR Processor. In addition, all modules have a field interface that
is used to connect to module specific signals in the field. All modules are Triple Modular Redundant
(TMR).
Figure 1 Module Architecture
All High Integrity I/O modules comprise four sections: Host Interface Unit (HIU), the Field Interface Unit
(FIU), the Field Termination Unit (FTU) and the Front Panel Unit (or FPU).
FRONT
PANEL
UNIT
FIELD
INTERFACE
U
NIT
(
FIU)
HIU POWER
SUPPLY
FIU POWER
SUPPLY
ISOLATION
FIELD
TERMINATION
UNIT
(FTU)
HOST
INTERFACE
U
NIT
(
HIU)
V1
V
2
FCR A
FCR D
FIELD
INTERFACE
UNIT
(FIU)
HIU POWER
SUPPLY
FIU POWER
SUPPLY
ISOLATION
HOST
INTERFACE
UNIT
(HIU)
V1
V
2
FIELD
INTERFACE
UNIT
(FIU)
HIU POWER
SUPPLY
FIU POWER
SUPPLY
ISOLATION
HOST
INTERFACE
UNIT
(HIU)
V1
V2
FCR B
FCR C
I
MB A
IMB B
IMB C
FCR INTERCONNECT BUS
Smart Slot Link
Smart Slot Link
Smart Slot Link
I
SOLATOR
24V1
ISOLATOR
24V2
V
1V2
LED's
CHASSIS POW ER ISOLATION