Siemens SINUMERIK 840D sl Function Manual page 115

Assignment table for stop responses
Table 7-4
Stop response for SINUMERIK Safety Integrated
STOP A
STOP B, STOP F
STOP C, STOP D, STOP E
Note:
: STOP F initiates STOP B if at least one safety-related function is active (SBH, SG, SE, SN and
1)
"Synchronization, hysteresis, filtering n<n
Priority of the stop responses
Priority level
Highest priority
..............................
.............................
.........
.............................
.............................
Lowest priority
Note
A stop response listed in Table "Priorities for stop responses" can only be initiated if at least
one safety-related function is active (except for STOP F).
Once a stop response has occurred, the sequence of operations it involves will be completed
even if the cause of the stop no longer exists.
It is possible to advance to stop responses that have a higher priority. It is not possible to
advance to stop responses that have a lower priority.
When the external stops are selected, there is still the exception that the actual low-priority
STOP F can be initiated in spite of this.
Stop response sequence
If a stop response is initiated in the drive, a signal is sent to the NC that responds by initiating
the same stop response (two-channel safety). Likewise, if a stop response is initiated in the
NC, the drive is automatically signaled and responds by requesting the same stop response.
This mechanism ensures that stop responses are managed with a high degree of safety.
External stops
Using this function, the user can stop the drive using SGEs.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Stop responses for SI acc. to E 60204-1
1)
Safety functions integrated in the system/drive
Stop function acc. to EN 60204-1
Category 0
Category 1
Category 2
").
x
Stop response
STOP A
STOP B
SGE test stop selection
STOP C
STOP D
STOP E
STOP F
7.3 Safe Stops A-F
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