Siemens SINUMERIK 840D sl Function Manual page 634

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27001 Axis %1 error in a monitoring channel, Code%2, values: NCK%3, drive %4
Saved standstill positions of NCK and PLC different.
Remedy
Re-establish data consistency using a power on.
1025
The drive or encoder signaled "parking active" - however the control had not requested "parking axis".
Remedy
Check the control signals to select the "parking" state.
1026
Plausibility error for cam synchronization between NCK and PLC.
Remedy
Check communication between the PLC and drive and between PLC and NCK.
Response NC start disable in this channel
Alarm display
A STOP F was initiated.
If a safety monitoring function was active (SBH, SG, SE, SN), then a STOP B was also automatically initiated.
It is then necessary to power-down/power-up the control (power on).
Program Clear the alarm with the RESET key. Restart the part program.
continuation
If a STOP B was initiated, then the control must be power-down/powered-up (power on).
27002 Axis %1 test stop in progress
Parameter %1 = axis name, spindle number
Explanation The proper and correct functioning of the switch-off signal path is presently being tested by setting the SGE
"test stop selection".
Response Alarm display
Remedy This message only provides information for the user.
Program con‐ The alarm is no longer displayed when the alarm cause has been removed. No other operator actions are
tinuation required.
The alarm automatically disappears after the delay time has expired that is defined in MD36957
$MA_SAFE_PULSE_DIS_CHECK_TIME - and the withdrawal of the SGE "test stop selection" if the control
detects that the drive pulses have been cancelled - i.e. the test has been successfully completed. An unsuc‐
cessful test can be recognized as a result of Alarm 27001 with fault code 1005 or Alarm 27024.
27003 Checksum error occurred %1 %2
Parameter %1 = reference to the code section or table
%2 = table number
Explanation Checksum error in safety-related code or safety-related data. The safety monitoring functions (Safety Inte‐
grated) in the NCK could be corrupted.
Response Alarm display
Remedy Please take extreme caution when continuing with any work. It is necessary to power-down/power-up the
control (power on). If this fault occurs again, contact the service department.
Program con‐ Switch control system OFF and ON again.
tinuation
634
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated