Siemens SINAMICS G130 Engineering Manual page 154

General Engineering Information for SINAMICS
Engineering Information
Two-channel brake control at SINAMICS S120 Booksize units and Blocksize units
The activation of the brake via the brake connection on the Motor Module or the Safe Brake Relay is realized in a
safe way using two independent channels.
The function Safe Brake Control is not available with SINANICS S120 chassis units and cabinet units.
Certification
The function Safe Brake Control is certified for SINAMICS S120 Booksize units by an accredited body, according to
EN 954-1 resp. ISO/FDIS 13849-1:2006 category 3 and according to DIN EN 61508 SIL 2 as well as performance
level d of ISO/FDIS 13849-1. The certificate always refers to specific versions of hardware and firmware.
According to IEC 61508, IEC 62061 and ISO 13849-1 it is required to quantify the probability of failures for safety
functions in form of a PFH value (Probability of Failure per Hour). The PFH value of a safety function depends on the
safety concept of the drive unit, its hardware configuration and on the PFH values of additional components, which
are required for the safety function. For SINAMICS units PFH values are provided in dependency on the hardware
configuration (number of units, number of sensors, etc.). Thereby no differece is made between the individual
integrated safety functions.
A list of certified components and firmware versions as well as a list of the PFH values is available on request from
your local Siemens partners.
SINAMICS Engineering Manual – May 2008
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