Residual Risk - Siemens SINAMICS S120 Function Manual

• Encoder faults within a single-encoder system are detected by means of various HW
• The Category 0 stop function to EN 60204-1 (STO in Safety Integrated) means that the
• Safety Integrated is not capable of detecting parameterization errors made by the
• Motor Modules or the motor must be replaced with a device of the same type, as the
The automatic FW update by means of p7826 = 1 (upgrade and downgrade) is available as
of firmware version FW2.5 and may never be deactivated if Safety Integrated is being used.
NOTICE
It is not allowed to deactivate components at which the safety functions are activated, for
example, by means of p0105.
2.4

Residual risk

The fault analysis enables the machine manufacturer to determine the residual risk at his
machine with regard to the drive unit. The following residual risks are known:
Safety Integrated
Function Manual, (FHS) , 07/2007 Edition, 6SL3097-2AR00-0BP0
WARNING
and SW monitoring functions. It is not allowed to disable these monitoring functions and
they must be parameterized carefully. Depending on the fault type and on the
responding monitoring function, either the Category 0 or the Category 1 stop function to
EN 60204-1 is activated (fault reaction function STOP A or STOP B according to Safety
Integrated).
drives are coasted to a stop instead of being braked to zero speed; this may take longer
depending on the decay of kinetic energy. This must be included in the logic of the
protective door lock, for example, by means of logic operation of SSM ( n<nx).
machine manufacturer. The required safety level can only be reached by by means of
an elaborate acceptance test.
parameter settings will otherwise lead to incorrect response of Safety Integrated. The
corresponding drive must be re-commissioned after an encoder was replaced.
CAUTION
System features
2.4 Residual risk
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