Rockwell-automation T8424 Trusted TMR 120Vac Digital Input Module Instrukcja Użytkownika Pobierz pdf (Strona 7)

Trusted

Module T8424

Issue 8 Sep 11 PD-T8424 7

Figure 2 shows a simplified functional block diagram of the Trusted

TMR 120VAC Digital Input

Module.

Figure 2 Functional Block Diagram

1.1. Field Termination Unit (FTU)

The Field Termination Unit (FTU) is the section of the I/O module that connects all three FIUs to a

single field interface. When installed in a Trusted

Controller or Expander Chassis, the FTU field

connector interconnects to the I/O cable assembly attached at the rear of the chassis.

The SmartSlot link is passed from the HIU to the field connections via the FTU. These signals go

directly to the field connector and maintain isolation from the I/O signals on the FTU. The SmartSlot

link is the intelligent connection between active and standby modules for co-ordination during module

replacement.

FTA

Input

Field

evice

Field Termination Unit (FTU)

SLICE A

MB A

FRONT PANEL

A/D

CONVERTER

FIELD LOGIC

CONTROL

ISOLATION BARRIER

SLICE POWER

SUPPLY

HOUSEKEEPING

FIU

LICE CONTROL A

IME STAMP

BUS INTERFACE

OUSEKEEPING

MODULE TEMP

SUPPLY DIAG

DSP REFERENCE

REDUNDANT

SUPPLY

24V1 24V2

HIU POWERFIU POWER

FRONT PANEL

OTING LOGIC

SLICE B

LICE C

SERIAL DISPLAY LATCHES

VOTED STATUS DISPLAY LEDs

HEALTH

INDICATORS

SLICE B

SLICE C

IMB B

IMB C

HIU

VAC

1 2 3 4 5 6 7 8 9 10 11 12 ... 28 29

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