Owner manual

Trusted
TM
Module T8433
Issue 11 Apr 10 PD-T8433 9
Figure 2 shows a simplified functional block diagram of the Trusted
T
M
4-20 mA Isolated Analogue Input
module in a typical installation.
Figure 2 Functional Block Diagram
DISTANT
F
IELD
D
EVICE
D
ISTANT
FIELD
DEVICE
A/D
CONVERTER
ARRAY
F
IELD LOGIC
CONTROL
HOUSEKEEPING
SLIC E POW ER
SUPPLY
FRONT PANEL VOTING
LOGIC
HEALTH INDIC ATORS
VOTED STATUS DISPLAY LEDS
SERIAL DISPLAY LATCHES
ISO LAT ION
BAR R IER
SLICE A
CONTROL
BUS
INTERFACE
HOUSEKEEPING
MODULE TEMP
SUPPLY DIAGS
DSP REFERENCE
IIFTU IFIU
IFIU A
FPIU
FPDU
FRONT PANEL DISPLAY UNIT
TIME STAMP
B
C
HIU
H IU POW ER
IMB A
IMB B
IMB C
B
C
REDUNDANT
SUPPLY
ISOLATION
FIU POWER
BC
BCA
IFIU B
IFIU C
T
MR
ISOLATION
AMPLIFIER
1
T M R B U F F ER AR R AY
TMR
ISOLATION
AMPLIFIER
20
ISOLATED INPUT FIELD
TERMINATION UNIT
IN PUT FIELD INTER FACE UNIT - SL IC E A
24V1
24V2
HOST INTERFACE UNIT
FRONT PANEL INTERFACE UNIT
DIAGNOSTIC
D/A ARRAY
A
A
B
C
A
B
C
A
B
C
FT A
T8833
FIELD
T
ERM INATION
A
SSEMBLY
F
IELD CABLE
TRUSTED I/O CABLE ASSEMBLY
4-20 mA
V
1+
V
1-
V20+
V20-
T8433 TMR ISOLATED 4-20 mA ANALOG INPUT MODULE
250 VRMS
WORKING
VOLTAGE
2.5 KV
TRANSIENT
IMB
BACK-
PLANE
4-20 mA
F
IELD CABLE
VPOW ER[1]
COMMON[1]
VSENSE[1]
VPOW ER[20]
VSENSE[20]
COMMON[20]