General information about SINAMICS Safety Integrated
3.1 Supported functions
Safety Integrated
14 Function Manual, 08/2023, A5E03264275A
• Safety Integrated Extended Functions
These functions require an additional safety license. Extended Functions with encoder
require an encoder with safety capability (safety-relevant).
– Safe Torque Off (STO)
Safe Torque Off is a safety function to avoid unexpected starting in accordance with
IEC 60204-1.
– Safe Stop 1 (SS1, time- and acceleration-controlled)
Safe Stop 1 is based on the "Safe Torque Off" function. This allows a Category 1 stop in
accordance with IEC 60204-1 to be implemented.
– Safe Brake Control (SBC)
Safe Brake Control safely controls a holding brake.
1)
– Safe Operating Stop (SOS)
Safe Operating Stop protects against unintentional movement. The drive is in closed-
loop control mode and is not disconnected from the power supply.
– Safe Stop 2 (SS2)
Safe Stop 2 safely brakes the motor with a subsequent transition into the "Safe
Operating Stop" state (SOS). This allows a Category 2 stop in accordance with
IEC 60204-1 to be implemented.
– Safely-Limited Speed (SLS)
Safely-Limited Speed monitors that the drive does not exceed a preset speed/velocity
limit.
– Safe Speed Monitor (SSM)
Safe Speed Monitor safely identifies when a speed limit is undershot in both directions
of motion, e.g. to identify zero speed. A fail-safe output signal is available for further
processing.
– Safe Direction (SDI)
Safe Direction is used to safely monitor the direction of motion.
– Safe gearbox stage switchover
The "Safe gearbox stage switchover" function facilitates reliable switching between
different gearbox stages. The switchover is only possible via PROFIsafe.
– Safely-Limited Acceleration (SLA)
Safely-Limited Acceleration monitors (the same as SLS) the acceleration, and
intervenes when a limit value is violated. SLA cannot prevent that the acceleration
threshold is briefly exceeded.
– Safe Brake Test (SBT)
The diagnostic function "Safe Brake Test" (SBT) checks the required holding torque of a
brake (operating or holding brake).
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