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.

The following Safety Integrated functions are available (terms in accordance with IEC 61800‑5‑2):

Safety Integrated basic functions:

• Safe Torque Off (STO)
  Suppression of drive pulses, providing safe electronic interruption of the energy supply
• Safe Brake Control (SBC)
  Safe brake control of holding brakes which are active in the de-energized state, e.g. motor holding brakes
• Safe Stop 1 (SS1)
  Safe shutdown of a drive, with subsequent transition into the STO state

The Safety Integrated basic functions are license-free.

The basic functions of Safety Integrated are activated via the terminals of the SINAMICS S120 Combi Power Modules or the SINAMICS S120 Motor Modules in booksize compact format and SINUMERIK 828D.

Extended Safety Integrated functions:

• Safe Operating Stop (SOS)
  Monitors drives for standstill – the drives remain fully functional in the position control
• Safe Stop 2 (SS2)
  Safe stopping of the drive with subsequent monitoring for standstill (SOS)
• Safely Limited Speed (SLS)
  Monitoring of configurable velocity limit values, e.g. during setup
• Safe Speed Monitor (SSM)
  Safe checkback signal when a value falls below a settable speed limit, e.g. for enabling a protective door
• Safe Acceleration Monitor (SAM)
  Safe monitoring of drive acceleration
• Safe Direction (SDI)
  Safe monitoring of the direction of motion
• Safely Limited Position (SLP)
  Variable traversing range limitation
• Safe Brake Management (SBM)
  • Safe Brake Control (SBC)
    2-channel braking signal – integrated in the SINAMICS S120 Motor Module
  • Safe Brake Test (SBT)
    Cyclic brake test

• Graphical commissioning with SINUMERIK Operate
  For each Safety function there is a clear, graphical display available for fast commissioning
• Integrated acceptance test with SINUMERIK Operate
  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.

The extended Safety Integrated functions require a software license in the form of a CNC option per axis/spindle with Safety functions.

A SINAMICS TM54F Terminal Module is required for controlling the extended Safety Integrated functions.