Siemens SINUMERIK 828D Function Manual page 20

Description of the Safety Integrated Extended Functions
3.2 Safe Stop 1 (SS1)
Acceleration monitoring with encoder
For Extended Functions with encoder, there is only the "acceleration monitoring" mode:
● The inverter monitors the motor speed using the function SAM (Safe Acceleration
● The inverter prevents the motor from re-accelerating by continuously adjusting the
● The inverter reduces the monitoring threshold until the "Shutdown speed" has been
● The inverter safely switches off the motor torque (STO) if one of the following conditions
Note
SS1 without OFF3
If you use "SS1 without OFF3", neither of the two monitoring functions (SBR, SAM) is active.
20
Monitor).
monitoring threshold to the decreasing speed.
reached.
is fulfilled:
– The inverter detects that the motor is stationary.
– The maximum time until the torque is switched off has expired.
Function Manual, 07/2012, 6FC5397-3EP40-3BA0
Safety Integrated