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.
Check the setting parameters of the quadrant error compensation (friction compensation), if necessary switch off the
compensation with MD32500 $MA_FRICT_COMP_ENABLE.
Programm
continuation:
Restart part program. Clear alarm with the RESET key in all channels of this mode group. Restart part program.
26002
Axis %1 encoder %2 parameterization error: number of encoder marks
Parameters:
%1 = Axis name, spindle number
%2 = Encoder number
Explanation:
1. Rotary measuring system (MD31000 $MA_ENC_IS_LINEAR[]==FALSE)
The number of encoder marks set in MD31020 $MA_ENC_RESOL[] does not correspond to the value in the drive machine
data (PROFIdrive: p979) or zero has been entered in one of the two machine data.
2. Absolute measuring system with EnDat interface (MD30240 $MA_ENC_TYPE[]==4)
On absolute encoders, the resolution of the incremental and absolute tracks supplied by the drive is also checked for
consistency.
For PROFIdrive drives:
Compare drive parameter p979 (and possibly other internal drive, manufacture-specific parameters stated in the relevant
drive documentation) or compare images in NC-MDs $MA_ENC_RESOL, $MA_ENC_PULSE_MULT,
$MA_ENC_ABS_TURNS_MODULO etc.
Conditions leading to triggering the alarm are:
* Number of encoder pulses in the drive!= $MA_ENC_RESOL
* PROFIdrive interface standardization/high resolution in p979 not permitted (permitted pushing factor 0...30 bits)
* With absolute encoders: Interface formats in p979 for absolute and incremental information does not fit together (i.e. the
absolute position in XIST2 is supplied in too coarse resolution for a complete position reconstruction)
* 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.
Programm
continuation:
Switch control OFF - ON.
SINUMERIK 808D ADVANCED alarms
5.2 NCK alarms
Diagnostics Manual
Diagnostics Manual, 06/2015, 6FC5398-6DP10-0BA2
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