Siemens SINAMICS G120C DP User Manual

8.16.3 EMERGENCY SWITCHING OFF and EMERGENCY STOP
Overview
In plants, systems and machines a distinction must be made between "EMERGENCY OFF"
and "EMERGENCY STOP". The STO safety function is only suitable for implementing an
"EMERGENCY STOP".
Function description
EN60204‑1 de󹪝nes "EMERGENCY OFF" and "EMERGENCY STOP":
• "EMERGENCY OFF" and "EMERGENCY STOP" are functions that are used in an emergency.
• "EMERGENCY OFF" and "EMERGENCY STOP" minimize di󹪜erent risks in the system or
machine.
– "EMERGENCY OFF" minimizes the risk of electric shock.
– "EMERGENCY STOP" minimizes the risk of unexpected motion.
• Stop Categories 0, 1 and 2 are available for EMERGENCY STOP.
Table 8-42 The distinction between "EMERGENCY OFF" and "EMERGENCY STOP"
Action: EMERGENCY OFF EMERGENCY STOP
Stop Category0 according to
EN60204‑1
Risk:
Electric shock
Unexpected movement
Measure to minimize
risk:
Switch o󹪜 the power supply
Either completely or partially switch
o󹪜 hazardous voltages
Prevent movement
Prevent any hazardous movement
Advanced commissioning
8.16Safe Torque O󹪜 (STO) safety function
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 257

Siemens SINAMICS G120C DP Specifications

General

Brand	Siemens
Model	SINAMICS G120C DP
Category	Inverter
Language	English