Siemens SINAMICS S120 Function Manual page 44

System features
3.2 Safety instructions
The Safety Integrated functions cannot be activated until the system has been completely
powered up. System startup is a critical operating state with increased risk. No personnel
may be present in the immediate danger zone in this phase.
The drives of vertical axes must be in torque state.
A complete forced dormant error detection cycle is required after power on (see chapter
"Forced dormant error detection").
EN 60204-1:2006
Emergency Stop function must bring the machine to a standstill in accordance with stop
category 0 or 1 (STO or SS1).
The machine must not restart automatically after EMERGENCY STOP.
When the safety functions (Basic or Extended 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.
After hardware and/or software components have been modified or replaced, all protective
equipment must be closed prior to system startup and drive activation. Personnel shall not
be present within the danger zone.
It may be necessary to carry out a partial or complete acceptance test (see chapter
"Acceptance test") after having made certain changes or replacements.
Before allowing anybody to re-enter the danger zone, you should test steady control
response by briefly moving the drives in forward and reverse direction (+/–).
To observe during power on:
The Safety Integrated functions are only available and can only be selected after the
system has completely powered up.
44
WARNING
WARNING
WARNING
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Safety Integrated