Siemens SINUMERIK 840D sl Function Manual page 666

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27113 Axis %1 hardware encoder fault of the safety-related actual value
Remedy After adjusting the encoder, initiate that the encoder serial number is transferred (only applicable for absolute
encoders).
Check and ensure that the EMC directive is complied with.
Replace the encoder hardware
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27124 STOP A initiated for at least one axis
Parameter
Explanation This alarm only indicates that STOP A has been initiated in at least one axis and power on is required to
acknowledge the alarm.
This alarm is output if the alarm priority function was activated in MD10094 $MN_SAFE_ALARM_SUP‐
PRESS_LEVEL.
Response Alarm display
Interface signals are set
"Pulse cancellation" is initiated for the axis involved.
Remedy Locate the cause of the error by evaluating additional alarm messages
Program con‐ Switch control system OFF and ON again.
tinuation
27132 Axis %1 checksum group error, safety-relevant monitoring functions. Confirmation and acceptance test re‐
quired!
Parameter %1 = axis name, spindle number
Explanation A checksum protects the relevant MD to parameterize the axis-specific safety functionality. The alarm indi‐
cates that at least one of the axis-specific checksums no longer matches the saved checksum, i.e. that a data
item was illegally changed or is corrupt.
This alarm is displayed during the commissioning phase (SPL-commissioning mode active) as axis-specific
group alarm for checksums alarms 27032, 27035 and 27060. MD10094 $MN_SAFE_ALARM_SUP‐
PRESS_LEVEL can be used to further reduce the alarm display so that only one alarm is displayed for all
axes (global group alarm 27135).
Response Alarm display
Interface signals are set
Mode group not ready
Channel not ready
NC start disable in this channel
NC stop for alarm
Remedy Check MD
Have the checksum re-calculated.
Check the hardware components and drive assignment.
Safety functions (motion monitoring functions) should be subject to a new acceptance test.
Program con‐ Switch control system OFF and ON again.
tinuation
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Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated