Siemens SINAMICS S120 Function Manual page 23

Danger to life as a result of undesirable motor movement when automatically restarting
The Emergency Stop function must bring the machine to a standstill according to Stop
Category 0 or 1 (STO or SS1) (EN 60204-1).
It is not permissible that the motor automatically restarts after an Emergency Stop, as this
represents danger to life as a result of the associated undesirable motor motion.
When individual safety functions (Safety Integrated Extended Functions or Safety
Integrated Advanced Functions) are deactivated, an automatic restart is permitted under
certain circumstances depending on the risk analysis (except when Emergency Stop is
reset). An automatic start is permitted when a protective door is closed, for example.
• For the cases listed above, ensure that an automatic restart is absolutely not possible.
Danger to life as a result of undesirable motor motion when the system powers up and the
drives are activated after changing or replacing hardware and/or software
After hardware and/or software components have been modified or replaced, it is only
permissible for the system to run up and the drives to be activated with the protective
devices closed. Personnel shall not be present within the danger zone.
• It may be necessary to carry out a partial or complete acceptance test or a simplified
• Before personnel may re-enter the hazardous area, all of the drives should be tested to
• When switching on carefully observed the following:
Parameterizing the encoder system
Encoder faults are detected using different hardware and software monitoring functions.
• It is not permissible to disable these monitoring functions (i.e. the encoder monitoring in
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
WARNING
WARNING
functional test after having made certain changes or replacements.
ensure that they exhibit stable control behavior by briefly moving them in both the plus
and minus directions (+/-).
The Safety Integrated Functions are only available and can only be selected after the
system has completely powered up.
WARNING
the Sensor Module) and they must be parameterized carefully. Depending on the fault
type and responding monitoring function, stop function Category 0 or 1 in accordance
with EN 60204-1 (fault response functions STOP A or STOP B in accordance with
Safety Integrated) is selected (see "Table 9-1 Overview of stop responses (Page 375)").
1.2 Fundamental safety instructions for Safety Integrated
Fundamental safety instructions
21