Rockwell Automation T8472 Trusted TMR 120V ac Isolated Output Module - Manual

Trusted TM
PD-T8472
Issue 13 Sep 11 PD-T8472 1
TMR 120VAC Digital Output
Module – 16 Channel
Introduction
The Trusted
TM
120VAC Digital Output module interfaces to 16 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 System Side
and ‘Quad Element’ redundancy for each of the 16 output channel circuits.
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 multiple
voltage and current measurements for each of the 16 channels of the module.
Features
• Triplicated TMR system architecture, with fault tolerant output switching.
• 16 Output Channels: 120Vac, 0.5A per channel, field powered as two groups of 8
• Comprehensive, automatic diagnostics and self-test.
• Short circuit monitoring per channel when energised (requires regular proof testing for
safety related normally de-energised outputs, e.g. F&G)
• Open circuit monitoring when energised or de-energised2500Vdc optical and magnetic
isolation barrier.
• Automatic channel over-current protection, no fuses required.
• On-board Sequence of Events (SOE) reporting with 1ms resolution.
• Module can be hot-replaced on-line using dedicated ‘Companion Slot’ (adjacent slot) or
SmartSlot (one spare slot for many modules) configurations.
• Front panel output status LED’s for each channel indicate output status and field wiring
faults.
• Front panel module status LED’s indicate module health and operational mode (Active,
Standby, Educated)
• T = V Certified IEC 61508, SIL 3