Rockwell-automation T8444 Trusted TMR Pulse Generator and Monitoring M Uživatelský manuál stáhnout pdf (Strana 35)

Trusted

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

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Rockwell-automation T8444 Trusted TMR Pulse Generator and Monitoring M Uživatelský manuál Strana 35