Siemens SINUMERIK Series Function Manual page 25

The following Safety Integrated functions (SI functions) are available:
● Safety Integrated basic functions
Safety Integrated basic functions are included as standard in the drive and can be used
without requiring an additional license. They are always available. These functions do not
require an encoder and/or do not place any special requirements on the encoder used.
– Safe Torque Off (STO)
– Safe Stop 1 (SS1, time controlled)
– Safe Brake Control (SBC)
● Safety Integrated extended functions
These functions require an additional Safety license: Extended functions require a safety-
relevant encoder.
– Safe Torque Off (STO)
– Safe Stop 1 (SS1, time and acceleration controlled)
– Safe Brake Control (SBC)
– Safe Operating Stop (SOS)
– Safe Stop 2 (SS2)
– Safely Limited Speed (SLS)
– Safe Speed Monitor (SSM)
– Safe Acceleration Monitor (SAM)
– Safe Direction (SDI)
– Safely Limited Position (SLP)
Safety Integrated
Function Manual, 10/2015, 6FC5397-3EP40-5BA3
Safe Torque Off is a safety function in accordance with EN‑ 60204‑1 that prevents the
drive from restarting unexpectedly. STO prevents the supply of energy to the motor
which can generate a torque and corresponds to Stop Category 0.
Safe Stop 1 is based on the "Safe Torque Off" function. This means that a Category 1
stop in accordance with EN 60204-1 can be implemented.
Safe Brake Control is used to safely control a holding brake.
Safe Torque Off is a safety function that prevents the drive from restarting unexpectedly
in accordance with EN‑ 60204‑1.
Safe Stop 1 is based on the "Safe Torque Off" function. This means that a Category 1
stop in accordance with EN 60204-1 can be implemented.
Safe Brake Control is used to safely control a holding brake.
Safe Operating Stop is used to protect against unintentional movements. The drive is
in closed-loop control mode and is not disconnected from the power supply.
Safe Stop 2 is used to safely brake the motor with a subsequent transition into the "Safe
Operating Stop" state (SOS). This means that a Category 2 stop in accordance with EN
60204-1 can be implemented.
Safely Limited Speed ensures that the drive does not exceed a preset speed limit/
velocity.
Safe Speed Monitor is used for safely identifying when a speed limit is fallen below in
both directions of motion, e.g. to identify zero speed. A fail-safe output signal is available
for further processing.
Safe Acceleration Monitor (SAM) is used to safely monitor drive acceleration.
Safe Direction is used to safely monitor the direction of motion.
Safely Limited Position ensures that a freely definable traversing range is not left.
Overview of Safety Integrated functions
2.1 Supported functions
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