Rockwell Automation T8431 Trusted TMR 24Vdc Analogue Input Module - 40 Channel - Manual (Page 7)

Trusted
TM
Module T8431
Issue 16 Sep 11 PD-T8431 7
Figure 2 shows a simplified functional block diagram of the Trusted TM 24V dc Analogue Input module.
Figure 2 Functional Block Diagram
1.1. Field Termination Unit (FTU)
The Field Termination Unit (FTU) is the I/O module assembly that connects all three FIUs to a field
connector. The FTU primarily contains passive components necessary for front-end signal
conditioning. When installed in a Trusted
TM Controller or Expander Chassis, the FTU field connector
mates to the Field 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 I/O cable assembly 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.