Siemens Sinumerik 840D sl Function Manual page 714

Diagnostics
10.2 NCK safety alarms for Sinumerik 840D sl
27113
Parameter
Explanation
Response
Remedy
Program r
continuation
27124
Explanation
Response
Remedy
Program r
continuation
27132
Parameter
Explanation
10-714
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Axis %1 hardware encoder fault of the safety- -related actual value
%1 = axis name, spindle number
The encoder evaluation signals a hardware fault.
The following causes are possible:
-- Dirty optical encoder evaluation
-- Signal transfer problems
-- Missing encoder number after replacing the encoder (involves
encoders with serial number, built--in motors or third--party motors)
Alarm display
In addition, a STOP F is initiated, that can result in the subsequent
Alarm 27001 with fault IDs 0, 27023 and 27024. Alarm 27001 with fault
ID 0 can be prevented using the alarm reduction (MD10094
$MA_SAFE_ALARM_SUPPRESS_LEVEL greater than or equal to 1).
After adjusting the encoder, initiate that the encoder serial number is
transferred (only applicable for absolute encoders).
Check and ensure that the EMC conditions are complied with.
Replace the encoder hardware
Clear the alarm with the RESET key. Restart the part program.
Stop A initiated for at least one axis
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_SUPPRESS_LEVEL.
Alarm display
Interface signals are set
"Pulse cancellation" is initiated for the axis involved.
Locate the cause of the error by evaluating additional alarm messages
Switch--off – switch--on the control
Axis %1 checksum group error safe monitoring. Confirmation and
acceptance test required!
%1 = axis name, spindle number
A checksum protects the relevant MD to parameterize the axis--specific
safety functionality. The alarm indicates that at least one of the axis--
specific checksums no longer matches the saved checksum, i.e. that
either a data item was illegally changed or is corrupt.
This alarm is displayed during the commissioning phase (SPL--commis-
sioning mode active) as axis--specific group alarm for checksums
alarms 27032, 27035 and 27060. MD10094
$MN_SAFE_ALARM_SUPPRESS_LEVEL can be used to further
reduce the alarm display so that only one alarm is displayed for all axes
(global group alarm 27135).
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