Siemens Sinumerik 840D sl Function Manual page 712

Sinumerik safety integrated

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10.2 NCK safety alarms for Sinumerik 840D sl

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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

Clear the alarm with the RESET key. Restart the part program.

Axis %1 encoder evaluation error of the safe actual value

%1 = axis name, spindle number

The redundantly determined safety--related actual value does not

match the actual value -- with fine resolution -- of the same encoder.

Alarm display

In addition, a STOP F is initiated, that can result in the subsequent

Alarm 27001 with fault IDs 0, 27023 and 27024. Alarm 27001 with fault

ID 0 can be prevented using the alarm reduction (MD10094

$MA_SAFE_ALARM_SUPPRESS_LEVEL greater than or equal to 1).

Check the encoder mounting

Check the encoder parameterization

Check NCK_MD(MD36916 $MA_SAFE_ENC_IS_LINEAR, $MD36917

$MA_SAFE_ENC_GRID_POINT_DIST, MD36918

$MA_SAFE_ENC_RESOL and the drive parameter field r0979)

For DRIVE--CLiQ encoders, also check NCK--MD36924

$MA_SAFE_ENC_NUM_BITS, MD36929 $MA_SAFE_ENC_CONF

and drive parameter r047x

For DRIVE--CLiQ linear encoders, additionally check NCK--MD36909

$MA_SAFE_ENC_MEAS_STEPS_RESOL and MD36913

$MA_SAFE_ENC_MEAS_STEPS_POS and drive parameter r0469 /

Check and ensure that the EMC conditions are complied with.

Replace the hardware

Clear the alarm with the RESET key. Restart the part program.

Sinamics s120