Safe Stop 1 With Time Control (Ss1-T) - Siemens SINAMICS G220 Operating Instructions Manual

Functions
14.12 Safety Integrated
Description of function
With Safe Stop 1 (SS1), the converter stops a dangerous movement of an electrically driven
machine component. After stopping, the Safe Torque Off (STO) function prevents the machine
component from restarting.
Table 14-90
Abbreviation
SS1-t
SS1-a
SS1-r
Example
Table 14-91
Example
A converter must brake a motor as quickly as pos‐
sible after the EMERGENCY STOP button has been
actuated. It is not permissible that the stationary
motor undesirably restarts.
14.12.4.3

Safe Stop 1 with time control (SS1-t)

Overview
With SS1‑t, the converter stops the motor along the OFF3 ramp within the set delay time. After
the delay time elapses, irrespective of the current speed, the converter activates the Safe Torque
Off (STO) function.
662
Versions of the function
SS1 application example
Brief description
Safe Stop 1 with time control
Safe Stop 1 with acceleration monitoring (SAM)
Safe Stop 1 with braking ramp monitoring (SBR)
Possible solution
Select SS1 via a failsafe digital input or via PROFI‐
safe.
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
SINAMICS G220 converter