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Siemens D 31 · 2015
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Function
Highlights
Safety Integrated
SINAMICS G110D and SINAMICS G120D
The SINAMICS G110D distributed frequency inverter offers the
Safe Torque Off (STO) function as a standard feature. Safety
functions are activated via the AS-i bus connection.
The SINAMICS G120D distributed frequency inverters include
versions for safety-related applications. The PM250D Power
Modules are already designed for Safety Integrated. In conjunc-
tion with a fail-safe Control Unit, the drive can be turned into a
Safety Integrated Drive with comprehensive safety functions.
In conjunction with a standard Control Unit, the drive provides
the safety function STO.
The Safety Integrated functions are fully integrated in the drive
system. They can be activated via fail-safe digital inputs on the
Control Unit or via PROFINET or PROFIBUS with PROFIsafe.
The Safety Integrated functions are implemented electronically
and therefore offer short response times compared to solutions
with externally implemented monitoring functions.
Safety Integrated encoderless
The safety functions do not require a motor encoder; the imple-
mentation effort is minimal. Existing systems in particular can be
updated with safety technology without the need to change the
motor or mechanical system.
The STO function can be used without restriction for all applica-
tions.
The SS1, SLS, SSM and SDI functions are permissible for applica-
tions in conjunction with asynchronous and SIEMOSYN motors
where the load can never cause acceleration. An encoder that is
used for the purposes of motor control has no significance for the
safety functions here.
Control Units
The availability of Safety Integrated functions depends on the
type of Control Unit, i.e. whether it is a standard Control Unit or a
fail-safe Control Unit. All standard Control Units have STO.
The fail-safe Control Units offer Extended Functions (SLS, SDI,
SSM) in addition to the Basic Functions (STO, SS1).
© Siemens AG 2014