Siemens SINUMERIK 840D Series Diagnostics Manual page 343

11.02
Remedy:
Program Continuation:
27000
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
27001
Parameters:
Definitions:
 Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
Reboot the drive, hardware reset.
Switch control OFF - ON.
Axis %1 is not safely referenced
%1 = Axis number
There are two reasons for this alarm:
• the machine position has not yet been acknowledged by the user,
• the machine position has not yet been verified 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 the group alarm 27100 is displayed for all SI axes.
- Alarm display.
Move the axis to a known position, change to the "Referencing" mode and press the soft
key "Enable". Check on the machine the positions displayed in the enable diagram. If
these correspond to those expected at the known positions, confirm this via the toggle
key. If the user enable has already been set, reference the axis again.
WARNING:
If the axis has not been safely referenced and the user has not confirmed, the following
applies:
• The safe cams are not yet safe.
• The safe limit positions are not yet active.
Alarm display showing cause of alarm disappears. No further operator action
Axis %1 error in a monitoring channel, code %2, values: NCK %3, drive %4
%1 = Axis number
%2 = Additional info cross-comparison index
%3 = NCK comparison value extension
%4 = Additional info comparison value drive
The mutual comparison of the two monitoring channels has found a difference between
input data or results of the monitoring operations. One of the monitors no longer functions
reliably, i.e. safe operation is no longer possible.
The following error codes are possible on the NCK side:
• 0 Following alarm to drive alarm 300911.
• 1 result list 1: SBH, SG, SBR or SE result. For further information see drive MD 1391,
1392.
• 2 result list 2: SN, n_x result. For further information see drive MD 1393, 1394.
• 3 Actual value difference greater than setting in $MA_SAFE_POS_TOL.
• 4 Not assigned.
• 5 Function enables $MA_SAFE_FUNCTION_ENABLE.
• 6 Velocity limit $MA_SAFE_VELO_LIMIT[0].
• 7 Velocity limit $MA_SAFE_VELO_LIMIT[1].
• 8 Velocity limit $MA_SAFE_VELO_LIMIT[2].
• 9 Velocity limit $MA_SAFE_VELO_LIMIT[3].
1 Alarms
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