Manual

Trusted
TM
PD-T8432
Issue 16 Apr 10 PD-T8432 1
Trusted
TM
Dual 24Vdc Analogue Input
Module - 60 Channel
Introduction
The Trusted
T
M
Dual 24V dc Analogue Input module interfaces to 60 field input devices. Comprehensive
diagnostic tests are performed on each input channel. Fault tolerance is achieved through theOne-
Out-Of-Two D’ (1-oo-2D) voting architecture within the module for each of the 60 input channels.
Using the built-in line-monitoring feature, the module can detect open and shorted field cables. Line
monitoring functions are independently configured for each input channel.
The module provides on-board Sequence of Events (SOE) reporting with a resolution of 1ms. A
change of state triggers an SOE entry. States are determined by voltage thresholds that can be
configured on a per channel basis. When the field voltage and field return are connected to the
auxiliary input channels of the module, thresholds can be specified as a ratio of the field supply voltage.
Features
60 dual input channels per module.
Comprehensive, automatic diagnostics and self-test.
Selectable line monitoring per channel to detect open circuit and short circuit field wiring
faults.
2500Vdc opto/galvanic isolation barrier.
On-board Sequence of Events (SOE) reporting with 1ms resolution.
Module can be hot-replaced on-line using dedicated Companion (adjacent) Slot or
SmartSlot (one spare slot for many modules) configurations.
Front panel module status LEDs indicate module health and operational mode (Active,
Standby, Educated)
T
9V Certified IEC 61508 SIL 3

Summary of content (33 pages)