Rockwell Automation T8472 Trusted TMR 120V ac Isolated Output Module - Manual (Page 6)

Trusted
TM
Module T8472
Issue 13 Sep 11 PD-T8472 6
1. Description
The TMR 120VAC Digital Output module is a member of the Trusted TM range of Input/Output (I/O)
modules. All Trusted TM 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 TMR Processor. In addition, all modules have a field interface that is used to
connect to module specific signals in the field. All modules system circuits are Triple Modular
Redundant (TMR). The AC Output Module has 16 Quad fully isolated and monitored channel AC
output switches. configured as two Groups of 8, each group having its own field supply input and field
supply monitoring.
Figure 1 Module Architecture
This ‘High Integrity I/O module’ comprises 4 PCB’s: Host Interface Unit (HIU), the Field Interface Unit
(FIU), the Field Termination Unit (FTU), and the Front Panel Unit (or FPU).
SmartSlot
Link
(A,B,C)
G
ro
u
p
2
(G
2
)
S
w
itc
h
e
d
O
u
tp
u
ts
G
ro
u
p
1
(G
1
)
S
w
itc
h
e
d
O
u
tp
u
ts
FTU
FIU
SLICE
A
2500 Vdc
ISOLATION
HIU Ch 1
to
Ch 16
2oo3
Voters
Ch
1
Ch
2
Ch
3
Ch
4
Ch
FIELD
SUPPL
Y Ch
MON
MON
Ch 9
Ch
10
Ch
11
Ch
12
Ch
INTERNAL
VOTER BUS
TMR IMB
Bus
A
B
C
Ch1 -Ch16 Dual
Redundant Isolated
AC O/P Channel
Switches
FPU
FRONT PANEL DISPLAY
FIELD
SUPPL
YCh1-8
SLICE
B
SLICE
C
SmartSlot
Link
(A,B,C)