Siemens SINUMERIK 840D sl Function Manual page 479

03.06
This is the reason that priorities are assigned to Alarms 27090, 27004, 27001 and
27101 to 27107. For these alarms
S a subsequent (follow-on) alarm that occurs afterwards is no longer displayed.
This alarm is also not visible in the alarm log.
S a subsequent alarm that already occurred beforehand is cleared again. This
alarm is then visible in the alarm log.
Assigning priorities to Alarm 27090 only becomes effective if it occurs due to differ-
ences in the $A_INSE system variables. Only then will this alarm be initiated as a
result of different input signals. For Alarms 27004, 27001 and 27101 to 21107, no
additional condition is required, as
S Alarms 27001 and 27101 to 21107 cannot occur if a STOP B or a STOP A is
already present. When the SI functionality is active, STOP B and STOP A al-
ways occur as subsequent error and do not provide the user with any additional
information about the cause of the fault or error.
S Alarm 27004 only occurs if differences are determined in the input signals.
Subsequent alarm for Alarm 27090
If Alarm 27090 is output, the following alarms are no longer displayed:
S 27001 defect in a monitoring channel
S 27004 difference, safety inputs
S 27020 STOP E initiated
S 27021 STOP D initiated
S 27022 STOP C initiated
S 27023 STOP B initiated
S 27024 STOP A initiated
S 27091 error for crosswise data comparison, NCK-PLC
S 27101 difference for the function, safe operating stop
S 27102 difference for the function, safely-reduced speed
S 27103 difference for the function, safe end position
S 27104 difference for the function, safe cam plus
S 27105 difference for the function, safe cam minus
S 27106 difference for the function, safely-reduced speed n
S 27107 difference for the function, cam modulo monitoring
Subsequent alarm for Alarm 27004
S 27001 defect in a monitoring channel
S 27023 STOP B initiated
S 27024 STOP A initiated
S 27101 difference for the function, safe operating stop
S 27102 difference for the function, safely-reduced speed
S 27103 difference for the function, safe end position
S 27104 difference for the function, safe cam plus
S 27105 difference for the function, safe cam minus
S 27106 difference for the function, safely-reduced speed n
S 27107 difference for the function, cam modulo monitoring
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
10.5 Reducing the number of alarms
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Diagnostics
10-479