Siemens SINUMERIK 840D sl Function Manual page 664

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27110 Axis %1 data transfer error, index %2
Parameter %1 = axis name, spindle number
%2 = index in the crosswise data comparison
Explanation Communication errors between the NCK and drive have meant that for three times in a row, the crosswise
data comparison of the data with the specified index was not able to be carried out.
Response 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).
Remedy Check the connections between the NCK and drive
Check the configuring of the PROFIBUS telegram (e.g. SI slot configured).
Check the assignment between the NCK SI axis and SI slot (MD36906 $MA_SAFE_CTRLOUT_MOD‐
ULE_NR, MD10393 $MN_SAFE_DRIVE_LOGIC_ADDRESS).
Check the assignment of the telegram configuration for the slave OM.
Check and ensure that the EMC directive is complied with.
Replace the hardware
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27111 Axis %1 encoder evaluation error of the safe actual value
Parameter %1 = axis name, spindle number
Explanation The redundantly determined safety-related actual value does not match the actual value - with fine resolution
- of the same encoder.
Response 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).
Remedy 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_RE‐
SOL and MD36913 $MA_SAFE_ENC_MEAS_STEPS_POS and drive parameter r0469 / r0473
Check and ensure that the EMC directive is complied with.
Replace the hardware
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
664
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated