ABB AC500-S Safety User Manual page 318

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Table of Contents

Safety times

Safety function response time

Fig. 118, Fig. 119 and Fig. 120 explain SFRT in more details. The model in Fig. 118 and Fig. 119

includes the stages of input signal reading, safe data transfer, safe logic processing, safe data

transfer and safe signal output. The model in Fig. 120 presents safe CPU to CPU communica-

tion, which includes the stages of safe logic processing, safe data transfer and safe logic pro-

Fig. 118: SFRT in AC500-S system without PROFINET components

All terms in this figure are further explained

3ADR025091M0208, 12, en_US