Siemens SINUMERIK 808D ADVANCED Diagnostic Manual page 320

SINUMERIK 808D ADVANCED alarms
3.2 NCK alarms
* In the case of rotary absolue encoders behind the gears (and activer traversing range extension in accordance with
$MA_ENC_ABS_BUFFERING): Absolute position format (in Gx_XIST2) is complete/sufficient for position
reconstruction via PowerOff in accordance with the following condition:
$MA_ENC_RESOL*$MA_ENC_PULSE_MULT*$MA_ENC_ABS_TURNS_MODULO must not be smaller than 2**32.
A remedy against alarm triggering in the latter case may be to increase $MA_ENC_PULSE_MULT (or the associated
drive-side parameterization e.g. p418/419 with SINAMICS) or (when the necessary conditions prevail) by deactivating
the traversing range extension - see $MA_ENC_ABS_BUFFERING
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Please inform the authorized personnel/service department.
Adjust machine data.
For absolute encoders, possibly pending drive alarms indicating encoder problems should be evaluated. They could
be the cause of incorrect entries of MD1022 $MD_ENC_ABS_RESOL_MOTOR/MD1032
$MD_ENC_ABS_RESOL_DIRECT, which the drive reads out of the encoder itself.
Program Switch control OFF - ON.
Continuation:
26003 Axis %1 parameterization error: lead screw pitch
Parameters: %1 = Axis name, spindle number
Definitions: The pitch of the ballscrew/trapezoidal leadscrew set in the axis-specific MD31030 $MA_LEADSCREW_PITCH is zero.
The alarm can be reprogrammed in the MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not ready).
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Determine the leadscrew pitch (specify the machine manufacturer or pitch measurement with spindle cover removed)
and enter it in the MD31030: $MA_LEADSCREW_PITCH (mostly 10 or 5 mm/rev.).
Program Switch control OFF - ON.
Continuation:
26004 Axis %1 encoder %2 parameterization error: grid point distance with linear encoders
Parameters: %1 = Axis name, spindle number
%2 = Encoder number
Definitions: The scale division of the linear scale set in the axis-specific MD31010 $MA_ENC_GRID_POINT_DIST is zero or
differs from the corresponding drive parameters. For a better understanding of the interrelations see the explanations
for alarm 26002, which refer to rotatory encoders.
The alarm can be reprogrammed in the MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not ready).
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Please inform the authorized personnel/service department.
Enter the encoder grid point distance according to the data given by the machine (or measuring device) manufacturer
in the MD31010 $MA_ENC_GRID_POINT_DIST.
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Diagnostics Manual, 08/2013, 6FC5398-6DP10-0BA1
Diagnostics Manual