Technical specification, Introduction, Figure 7 pg/m functional block diagram – Rockwell Automation T8444 Trusted TMR Pulse Generator and Monitoring Module User Manual
Page 35
Advertising
Trusted
TM
Module T8444
Issue 09 Apr 10
PD-T8444
35
6. Technical specification
6.1. Introduction
The Pulse Generator and Monitoring module is required to be high integrity but it is not in itself
intended to be a safety system.
The design concept maintains the advantages of TMR systems while retaining a simple
implementation of a Damper Rod control system by the use of redundant paths.
The PG/M generates a series of waveforms which rotate a stepper motor in either a clockwise or anti
clockwise direction. The phasing of the outputs determines the direction of rotation while the frequency
determines the speed.
Figure 7 PG/M Functional Block Diagram
Advertising