Technical data

Safety Integrated Functions
8.2 General information about SINAMICS Safety Integrated
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
335
● Safety Integrated Extended Functions
These functions require an additional Safety license. Extended Functions with encoder
require an encoder with Safety capability (see section "Reliable actual value acquisition
with the encoder system").
– Safe Torque Off (STO)
Safe Torque Off is a safety function that prevents the drive from restarting
unexpectedly in accordance with EN- 60204-1, Section 5.4.
– Safe Stop 1 (SS1, time and acceleration controlled)
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 Stop 2 (SS2)
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.
– Safe Operating Stop (SOS)
Safe Operating Stop is used to protect against unintentional movement. The drive is in
closed-loop control mode and is not disconnected from the power supply.
– Safely Limited Speed (SLS)
Safely Limited Speed ensures that the drive does not exceed a preset speed
limit/velocity.
– Safe Speed Monitor (SSM)
Safe Speed Monitor is used for safely identifying when a speed limit is fallen below in
both directions of rotation, e.g. to identify zero speed. A fail-safe output signal is
available for further processing.
– Safe Acceleration Monitor (SAM)
Safe Acceleration Monitor monitors the safe braking of the drive during the ramp
down. An unintentional "reacceleration" is reliably prevented. It is part of functions SS1
and SS2.
– Safe Brake Ramp (SBR)
Safe Brake Ramp is used to safely monitor the brake ramp. It is part of the "SS1
without encoder" and "SLS without encoder" functions.
– Safe Direction (SDI)
Safe Direction is used to safely monitor the direction of motion.
The term "Motion Monitoring Functions" is also used for the Safety Integrated Extended
Functions.