Siemens SINUMERIK 840D sl Function Manual page 388

Diagnostics
10.2 NCK safety alarms for Sinumerik 840D sl
Response
Remedy
Program
continuation
Warning
!
If the axis has not been safely referenced and the user has not issued a user
agreement, then the following applies:
– the safe cams are still not safe.
– the safe limit positions are still not active
27001
Parameter
Explanation
10-388
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
For example, incorrect results can occur if the axis was moved after the
control was powered-down – with the result that the stop position saved
prior to powering-down is no longer correct. To ensure that this does
not happen, the user must acknowledge the displayed actual position
after the first referencing operation.
After the user agreement has been set for the first time, the axis must
be subsequently referenced each time that the control is booted (with
absolute encoders, this subsequent referencing is automatically
executed). This procedure is carried-out to verify the stop position
saved prior to powering-down the control.
The alarm display can be set using MD
$MN_SAFE_ALARM_SUPPRESS_LEVEL (MD>=3) so that the group
alarm 27100 is displayed for all SI axes.
Alarm display
The SGA "axis safely referenced" is not set. SE is disabled if the safety
actual position has not yet been acknowledged by the user agreement.
If the user agreement is set, SE remains active. The safe cams are
calculated and output, but their significance is limited because
referencing has not been acknowledged.
Move the axis to a known position, change to the "referencing" mode
and press the softkey "Agreement". Check the positions in the
agreement screen at the machine. If these correspond to those
expected at the known position, confirm this using the toggle key. If the
user agreement has already been set, re-reference the axis.
The user agreement can only be changed in key-actuated switch
setting 3 or after entering a password.
The alarm is no longer displayed when the alarm cause has been
removed. No other operator actions are required
Axis %1 error in a monitoring channel, Code %2, values:
NCK %3, drive %4
%1 = axis number
%2 = supplementary information, crosswise data comparison index
%3 = supplementary information, comparison value, NCK
%4 = supplementary information, comparison value, drive
The status of the safety-related monitoring functions are cyclically and
mutually compared between the two monitoring channels (NCK and
drive). The comparison is carried-out separately for each NCK/drive
combination.
© Siemens AG, 2006. All rights reserved
03.06