Siemens SINUMERIK 840D sl Series Diagnostics Manual page 415

08/2005
$MA_SAFE_FUNCTION_ENABLE). Without this functionality it is only possible to oper-
ate SPL in start-up state.
Reactions: - Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: Start up axial Safety Integrated functionality or remove the SPL protection via MD
$MN_PREVENT_SYNACT_LOCK[0,1].
Program Con- Switch control OFF - ON.
tinuation:
27100
At least one axis is not safely referenced
Definitions: There are two reasons for this alarm:
• the machine position of at least one of the axes monitored with SI has not yet been
acknowledged by the user, or
• the machine position of at least one of the axes monitored with SI has not yet been veri-
fied through follow-up referencing.
Even if the axis is already referenced, there is no confirmation that referencing has sup-
plied the correct result. For example, wrong results can occur if the axis was moved after
the control was switched off, with the result that the standstill position saved prior to
switching off is no longer correct. To make sure that this does not happen, the user must
acknowledge the displayed actual position after the first referencing process.
When the user enable has first been set, follow-up referencing must be carried out each
time the control is booted (with absolute encoders, this follow-up referencing is executed
automatically). This procedure is carried out to verify the standstill position saved prior to
switching off of the control.
Via the MD $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD>=3), the alarm display can
be set in such a way that an alarm is given for each axis individually which has not been
safely referenced.
Reactions: - Alarm display.
SGA "Axis safely referenced" is not set. SE will be switched off, if the actual safety posi-
tion has not yet been confirmed by a user agreement. If the user agreement has been set,
SE will remain active. The safe cams are calculated and output. However, their signifi-
cance is limited, as referencing has not been confirmed.
Remedy: Move all SI axes to known positions and change to "Referencing" mode. Check the posi-
tions on the machine displayed in the user confirmation field and set "User confirmation"
via the selection/toggle key. If the user confirmation for the axes has already been set,
reference the axes again.
Changing the user confirmation will be possible only in key switch position 3 or after pass-
word entry
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
27101
Axis %1 difference in function safe operational stop, NCK: %2 drive: %3
Parameters: %1 = Axis number
%2 = Monitoring status safe operating stop
%3 = Monitoring status safe operating stop
Definitions: During cross-comparison of result list 1 a difference was detected between the NCK and
drive monitoring channels in the status of safe operating stop monitoring.
Safe operating stop: Bit 0,1 in result list 1
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-415