Safety Instructions - Siemens Sinamics S120 Function Manual

Safety Integrated basic functions

9.3 Safety instructions

9.3 Safety instructions
Safety instructions
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 may not be in the hazardous area.
It may be necessary to carry out a partial or complete acceptance test or a simplified
functional test (see the "Acceptance test" chapter) after making certain changes or
replacements.
Before persons may re-enter the hazardous area, the drives should be tested to ensure that
they exhibit stable control behavior by briefly moving them in both the plus and minus
directions (+/–).
Please note the following during switch-on:
The safety-related functions are only available and can be activated after the system has
completely started up.
The Category 0 stop function according to EN 60204-1 (defined as STO in Safety
Integrated) means that the drives are not braked to zero speed, but coast to a stop (this
may take some time depending on the level of kinetic energy involved). This has to be
incorporated in the protective door interlocking logic.
Safety Integrated is not capable of detecting parameterization errors made by the machine
manufacturer. The required level of safety can only be assured by careful acceptance
testing.
The automatic firmware update via p7826 = 1 (upgrade and downgrade) must not be
deactivated under any circumstances when using Safety Integrated.
If two power transistors in the power unit (one in the upper and one offset in the lower
inverter bridge) fail at the same time, this can cause a momentary movement.
The maximum movement can be:
Synchronous rotary motors: Max. movement = 180 ° / pole pair count
Synchronous linear motors: Max. movement = pole width
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WARNING
WARNING
WARNING
WARNING
CAUTION
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions