Siemens SINUMERIK 840D sl Function Manual page 368

Data Description
8.3 Interface signals
SGA STOP E is active
This signal indicates that STOP E is active.
The signal must be used for the forced checking procedure for external STOPs.
0 signal:
1 signal:
SGA "n < n
x
This SGA indicates whether the absolute value of the actual speed is above or be-
low a speed specified in the machine data.
SGA "n < n
Fig. 8-2
Warning
!
A STOP F (displayed using Alarms 27001, 27101 and onwards or F01711) only
results in a subsequent STOP B/A response, if at least one of the safety–related
functions SBH, SG, SE or SN is active or selected. If only the function "n < nx" is
active, then a STOP F does not result in a subsequent STOP B/A response.
This means that if "n < nx" is used as a safety function, at least one of the SBH,
SG, SE or SN functions must either be active or selected (e.g. by selecting a high
SG level).
Note
If the axis/spindle runs at a speed n
two monitoring channels, the SGA "n < n
This must be taken into account in the safe processing of the SGA.
8-368
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
STOP E is not active
STOP E is active
n
n
x
1
"
x
0
Signal n < n , dependent on the speed characteristic
x
, then as a result of actual differences in the
x
" can have different states.
x
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05.08
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