Siemens SINUMERIK Series Function Manual page 31

Example of how the function can be used
● For an Emergency Stop, a drive must be braked as quickly as possible, and then
transitioned into STO.
How does SS1 function in detail?
Using the SS1 function, the inverter brakes the motor and monitors the absolute speed. If the
motor speed is low enough or the delay time has expired, the inverter safely switches off the
motor torque using STO .
Select SS1
As soon as the inverter detects the selection of SS1 via a fail-safe input, the following happens:
● If the motor has already been switched off when selecting SS1 , then the inverter safely
switches off the motor torque (STO).
● If the motor is switched on when SS1 is selected, the inverter brakes the motor with the
AUS3 ramp-down time.
Monitoring modes
The "Acceleration monitoring" mode is available for Extended Functions (SAM).
Safety Integrated
Function Manual, 10/2015, 6FC5397-3EP40-5BA3
Overview of Safety Integrated functions
2.3 Safety Integrated Extended Functions
31