SIEMENS
SINAMICS S150 NEMA
Engineering Information
3
Siemens D21.7
(Part 2) – 2015
Safety Integrated – Overview
This section provides an overview of Safety Integrated
functions of SINAMICS S150. For further details please
refer to /safety-drives as well as the
current version of manuals published on the Siemens
Technical Support website:
“SINAMICS G130, G150, S120
Chassis, S120 Cabinet Modules, S150 Safety Integrated
Function Manual” https://support.industry.siemens.com/cs/
us/en/view/106254588 and the “SINAMICS S120 Safety
Integrated Function Manual” https://support.industry.
siemens.com/cs/us/en/view/99668646
Safety functions integral to the SINAMICS drives
SINAMICS drives are characterized by a large number of
integrated safety functions. In combination with the sensors
and safety control required for the safety functionality, they
ensure that highly-effective protection for persons and
machines is implemented in a practice-oriented manner.
They fulfill the following equipment requirements:
• SIL 2 according to IEC 61508
• PL d and Category 3 according to EN ISO 13849-1
The Safety Integrated functions of SINAMICS drives are
certified by independent institutions. You can obtain the
corresponding test certificates and manufacturer’s
declarations from your Siemens contacts.
The integrated safety functions that are currently available
in the SINAMICS drive system are described below. The
functional safety of all of the functions satisfies the
requirements defined in the international standard IEC
61800-5-2 for variable-speed drive systems.
The safety functions integrated into the SINAMICS drive
system can be roughly divided into four categories:
•
Functions for safely stopping a drive
- Safe Torque Off (STO)
- Safe Stop 1 (SS1)
- Safe Stop 2 (SS2)
- Safe Operating Stop (SOS)
• Functions for safe brake management
- Safe Brake Control (SBC)
- Safe Brake Test (SBT) (this function exceeds the scope of
IEC 61800-5-2)
• Functions for safely monitoring the motion of a drive
- Safely-Limited Speed (SLS)
- Safe Speed Monitor (SSM)
- Safe Direction (SDI)
• Functions for safely monitoring the position of a drive
- Safely-Limited Position (SLP)
- Safe Position (SP) (this function exceeds the scope of
IEC 61800-5-2
Basic Functions and Extended Functions
The Safety Integrated functions of the SINAMICS drive
system are grouped into Basic Functions and Extended
Functions. The Basic Functions are included in the standard
scope of delivery of the drive. The user can activate these
functions at any time. An encoder is not required for their use.
• Basic Functions
- Safe Torque Off (STO)
- Safe Brake Control (SBC)
- Safe Stop 1 (SS1)
• Extended Functions
- Safe Stop 1 (SS1) with SBR or SAM
- Safe Stop 2 (SS2) with SAM
- Safe Operating Stop (SOS)
- Safely-Limited Speed (SLS)
- Safe Speed Monitor (SSM)
- Safe Direction (SDI)
- Safely-Limited Position (SLP)
- Safe Position (SP)
- Safe Brake Test (SBT)
For the Extended Functions Safe Stop 1 (SS1) and Safe Stop
2 (SS2) with SAM, safe acceleration monitoring (SAM) is
performed during braking to identify any faults during the
braking phase.
If Safe Stop 1 is used as an encoderless function, a Safe
Brake Ramp (SBR) can be configured as an alternative.
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