Siemens SINUMERIK 840D Description Of Functions page 83

11.03
An external STOP E in contrast to the other external stops, results in Alarm
27020, which can only be acknowledged with a reset. The program cannot be
directly continued, since retraction from the desired contour was executed by
the configured ESR. The reset required must also be considered during the test
stop sequence.
SGA This signal indicates that STOP A/B is active.
STOP A/B active The signal must be used for the forced checking procedure for external STOPs.
0 signal:
1 signal:
SGA This signal indicates that STOP C is active.
STOP C active The signal must be used for the forced checking procedure for external STOPs.
0 signal:
1 signal:
SGA This signal indicates that STOP D is active.
STOP D active The signal must be used for the forced checking procedure for external STOPs.
0 signal:
1 signal:
SGA This signal indicates that STOP E is active.
STOP E active The signal must be used for the forced checking procedure for external STOPs.
0 signal:
otherwise:
Combinations for For SGEs "de-select ext. STOP A", "de-select ext. STOP C", "de-select ext.
external STOPs STOP D" and "de-select ext. STOP E" the following input bit combinations are
possible:
Table 3-12
De-
selection
ext.
STOP E
x
x
x
1
0
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
STOP A/B is not active
STOP A/B is active
STOP C is not active
STOP C is active
STOP D is not active
STOP D is active
STOP E is not active
STOP E is active
Input bit combinations
SGE
De- De- De-
selection selection selection
ext. ext. ext.
STOP D STOP C STOP A
x x 0
x 0 1
0 1 1
1 1 1
1 1 1
3 Safety-Related Functions
3.2 External STOPs
Description
"Pulse cancellation" is triggered
"Brake with n =0" is triggered
set
"Braking along a path" is triggered
External STOPS are not selected
"ESR" is initiated
3-83