Safe Stop 1 (Ss1); Safe Stop 1 With Encoder (Time And Acceleration Controlled) - Siemens SINAMICS S120 Function Manual

Safety Integrated Extended Functions

5.3 Safe Stop 1 (SS1)

5.3 Safe Stop 1 (SS1)
5.3.1

Safe Stop 1 with encoder (time and acceleration controlled)

Safe Stop 1 with encoder
The "Safe Stop 1" (SS1) function allows the drive to be stopped in accordance with
EN 60204-1:2006, stop category 1. The drive brakes with the OFF3 ramp (p1135) once
"Safe Stop 1" is selected and switches to "Safe Torque Off" (STO) once the delay time has
elapsed (p9356/p9556) or when the shutdown speed is reached (p9360/p9560).
Figure 5-1
Functional features of Safe Stop 1
● The delay time starts after the function is selected. If SS1 is deselected again within this
● The selection is realized through two channels - however braking along the OFF3 ramp,
● The "Safe Acceleration Monitor" (SBR) function is activated when braking (see "Safe
66
Sequence with SS1 selection
time, after the delay time has expired or after the shutdown speed has been undershot,
the STO function is selected and then immediately deselected again.
only through one channel.
Acceleration Monitor").
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Safety Integrated