Siemens SINAMICS Series Operating Instructions Manual page 718

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Table of Contents

Functional safety

13.5 Application examples

STO application with line contactor

First channel (blue): Line contactor armature + armature auxiliary contactor

Second channel (red): Firing pulse circuit, SAFETY circuit

Safety components (green)

Contact blocks for field excitation (gray): Line contactor field + field auxiliary contactor (also as the field contactor is

usually controlled as well)

STO application with line contactor

SINAMICS DCM DC Converter

Operating Instructions, 12/2018, A5E34763375A