Technical Specifications; Introduction - Rockwell Automation Trusted TMR Manual

Trusted TMR Pulse Generator and Monitoring Module

6. Technical Specifications

6. Technical Specifications

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
Rockwell Automation Publication PD-T8444 Issue 10 38