Axis %2 Reference Point Approach Aborted; Axis %2 Reference Point Creep Velocity Not Reached - Siemens Sinamics S120 Diagnostic Manual

Remedy: Please inform the authorized personnel/service department.
Determine the distance between 2 odd reference point markers (reference point marker interval). This value (which is
20.00 mm on Heidenhain scales) must be entered in the MD34060 $MA_REFP_MAX_MARKER_DIST.
Check the reference point track of the scale including the electronics for the evaluation.
Program Clear alarm with the RESET key. Restart part program
Continuation:
20005 [Channel %1: ] Axis %2 reference point approach aborted
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: Referencing could not be completed for all stated axes (e.g., abort caused by missing servo enable, measuring system
switchover, release of direction key, etc.).
In distance-coded measuring systems, the alarm will also be displayed if the value 1 has been set in MD34000
$MA_REFP_CAM_IS_ACTIV (reference cams) and one of the conditions stated in the remedy has been fulfilled.
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department. Check the possible reasons for termination:
- Servo enable missing: NC/PLC interface signal DB380x DBX0002.1 (Servo enable)
- Measuring system switchover: NC/PLC interface signal DB380x DBX0001.5 / 1.6 (Position measuring system 1/2)
- Traversing key + or - missing: NC/PLC interface signal DB380x DBX0004.7 / 4.6 (Traversing keys plus/minus)
- Feed override = 0
- The feed disable is active
- Exact stop not reached within MD36020 $MA_POSITIONING_TIME.
The axis-specific MD34110 $MA_REFP_CYCLE_NR determines which axes are involved in the channel-specific ref-
erencing.
ValueMeaning
-1: No channel-specific referencing, NC Start without referencing.
0: No channel-specific referencing, NC Start with referencing.
1-8: Channel-specific referencing. The number entered here corresponds to the referencing sequence. (When all axes
with contents 1 have reached the reference point, then the axes with contents 2 start, etc.).
Program Clear alarm with the RESET key. Restart part program
Continuation:
20006 [Channel %1: ] Axis %2 reference point creep velocity not reached
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: In phase 2 of reference point approach (wait for zero mark), the cam end was reached but the reference point
approach velocity was not within the tolerance window. (This can occur when the axis is already at the end of the cam
at the beginning of reference point approach. Phase 1 is therefore considered as being already concluded and will not
be started.)
Phase 2 has been interrupted (this time before the cam) and the reference point approach will be started once again
automatically with phase 1. If the approach velocity is not reached at the 2nd attempt either, referencing will be stopped
and the alarm displayed.
Approach velocity: MD34040 $MA_REFP_VELO_SEARCH_MARKER
Velocity tolerance: MD35150 $MA_SPIND_DES_VELO_TOL.
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department.
Reduce the MD for the approach velocity MD34040 $MA_REFP_VELO_SEARCH_MARKER and/or increase the MD
for the velocity tolerance MD35150 $MA_SPIND_DES_VELO_TOL.
Alarms
Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
NCK alarms
299