Siemens SINUMERIK 840D sl Function Manual page 162

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Table of Contents

Safety Functions Integrated in the System/Drive

6.6 Safety–related output "n<nx"

Response time and error responses

Typical response time for n < n

1 interpolation clock cycle + 2 monitoring clock cycles

Maximum response times: 1 position controller clock cycle + 5.5 monitoring clock

cycles + 2 interpolation clock cycles + 3 PLC cycles

A STOP F (displayed using alarms 27001, 27101 and onwards or F01611) only

results in a subsequent STOP B/A response, if at least one of the safety–related

functions SBH, SG, SE or SN is active or selected. If only the function "n < n

active, then a STOP F does not result in a subsequent STOP B/A response.

This means that if "n < n

SBH, SG, SE or SN functions must be active or selected (e.g. by selecting a high

If the axis/spindle runs at a speed n

two monitoring channels, the SGA "n < n

This must be taken into account in the safe processing of the SGAs.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition

is used as a safety function, then at least one of the

, then as a result of actual differences in the

" can have different states.

Sinamics s120