Rockwell Automation T8461 Trusted TMR 24 48Vdc Digital Output Module - Manual

Trusted TM
PD-T8461
Issue 13 Apr 10 PD-T8461 1
Trusted
TM
TMR 24 / 48V dc Output
Module-40 Channel
Introduction
The Trusted TM TMR 24 / 48V dc Digital Output module interfaces to 40 field devices. Triplicated
diagnostic tests are performed throughout the module including measurements for current, and voltage
on each portion of the voted output channel. Tests are also performed for stuck on and stuck off
failures. Fault tolerance is achieved through a Triple Modular Redundant (TMR) architecture within the
module for each of the 40 output channels.
Automatic line-monitoring of the field device is provided. This feature enables the module to detect
both open and short circuit failures in field wiring and load devices.
The module provides on-board Sequence of Events (SOE) reporting with a resolution of 1ms. An
output change of state triggers an SOE entry. Output states are automatically determined by voltage
and current measurements on board the module.
Features
• 40 Triple Modular Redundant (TMR) output channels per module.
• Comprehensive, automatic diagnostics and self-test.
• Automatic line monitoring per channel to detect open circuit and short circuit field wiring
and load faults.
• 2500V dc optical isolation barrier.
• Automatic over-current protection (per channel), no fuses required.
• 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 output status LEDs for each channel indicate output status and field wiring
faults.
• Front panel module status LEDs indicate module health and operational mode (Active,
Standby, Educated)
• T 6 V Certified IEC 61508 SIL 3
• Outputs are powered in isolated groups of eight.
• Each power group can be of a different voltage