The safety functions are available in all modes and can communicate with the process using safety-oriented input/output signals.

They can be implemented for each individual axis and spindle:

Safety Integrated drive-based (basic version)

• Safe Torque Off (STO)
  Suppression of drive pulses, providing safe electronic interruption of the energy supply
• Safe Brake Control (SBC)
  Safe (2-channel) control of a holding brake (integrated in the SINAMICS S120 Motor Module)
• Safe Stop 1 (SS1)
  Safe shutdown of a drive followed by STO

Safety Integrated system-integrated (option)

• Safe shutdown
  Ensures safe transition of the drive from motion to standstill when a monitoring device or a sensor (e.g. a light barrier) responds.
• Safe braking ramp (SBR)
  Monitoring of the speed curve. The speed must be reduced after a stop request has been issued
• Safe operating stop (SBH)
  Monitors drives for standstill. The drives remain fully functional in closed loop position control
• Safe standstill (SH)
  Suppression of drive pulses, providing safe electronic interruption of the energy supply
• Safely limited speed (SLS)
  Monitoring of configurable speed limits
• Safety-related output n < n_x
  Safe speed recognition of a drive
• Safe software limit switches (SE)
  Variable traversing range limitations
• Safe software cams (SN)
  Range recognition
• Safety-related input/output signals (SGE/SGA)
  Interface with process
• Safe programmable logic (SPL)
  Direct connection of all safety-related signals and their internal logical operation
• Safe brake management (SBM)
  • 2-channel braking signal
    (integrated in the SINAMICS S120 Motor Module) (SBC)
  • Cyclic brake test (SBT)
• Safety-related communication via standard bus
  • Connection of distributed I/O for process and safety signals via PROFIBUS/PROFINET using the PROFIsafe protocol.
  • Safety-related CPU - CPU communication via PROFIBUS or PROFINET
• Integrated acceptance test
  Partially automated acceptance test for all safety-related functions. Simple operation of the test process, automatic configuration of Trace functions and automatic generation of an acceptance record.