Supported Functions - Siemens Sinamics S120 Function Manual

General information about SINAMICS Safety Integrated

2.2 Supported functions

2.2 Supported functions
All of the Safety Integrated functions available under SINAMICS S120 are listed in this
section. SINAMICS makes a distinction between Safety Integrated Basic Functions and
Safety Integrated Extended Functions.
The safety functions listed here conform to:
● Safety Integrity Level (SIL) 2 according to IEC 61508
● Category 3 according to DIN EN ISO 13849-1
● Performance level (PL) d according to DIN EN ISO 13849-1
The safety functions correspond to the functions according to DIN EN 61800-5-2 (under the
assumption that they are defined there).
Safety Integrated Basic Functions
These functions are part of the standard scope of the drive and can be used without
requiring an additional license. These functions 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 Torque Off is a safety function to avoid unexpected startup in accordance with
EN 60204-1. STO prevents the supply of power to the motor, which can produce a
torque. This is equivalent to stop category 0.
● Safe Stop 1 (SS1, time-controlled)
Safe Stop 1 is based on the "Safe Torque Off" function. This means that a Category 1
stop according to EN 60204-1 can be implemented.
● Safe Brake Control (SBC)
Safe Brake Control is used to safely control a holding brake.
Note regarding Power/Motor Modules in the chassis format: For the chassis format, SBC is
1)
only supported by Power/Motor Modules with article number ...3 or higher. A Safe Brake
Adapter is also needed for this format.
Note regarding Power/Motor Modules in the blocksize format: Blocksize Power Modules
2)
also require a Safe Brake Relay for this function.
Safety Integrated Extended Functions
These functions require an additional safety license. Extended Functions with encoder
require an encoder with safety capability (see Section "Notes regarding safe actual value
sensing using an encoder system (Page 147)").
● Safe Torque Off (STO)
Safe Torque Off is a safety function to avoid unexpected starting in accordance with
EN 60204-1.
● 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.
24
1) 2)
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated