Siemens Sinumerik 840D sl Diagnostic Manual page 424

Overview of Alarms
NCK alarms
Remedy: Continue with start up, correct checksum.
- If MD $MA_SAFE_BRAKETEST_TORQUE_NORM is displayed:
The change to p2003 must be taken into account in the parameterization of MD
$MA_SAFE_BRAKETEST_TORQUE. The holding torque to be parameterized for the brake test must
be reset.
$MA_SAFE_BRAKETEST_TORQUE = desired test torque of the brake / p2003 * 100.
Then an acceptance test of the functioning of the brake test must be made.
Program Con- Switch control OFF - ON.
tinuation:
27040 Axis %1 waiting for motor module.
Parameters: %1 = Axis name, spindle number
Definitions: Alarm on ramp-up as long as the motor module is not yet ready for SI.
Communication to the motor module is not yet active on ramp-up, the safety functions are not yet
available.
The alarm indication can be set in MD $MN_SAFE_ALARM_SUPPRESS_LEVEL so that only one
alarm is displayed for all axes.
Reaction: Interface signals are set.
Alarm display.
Remedy: The alarm will remain present during ramp-up if the drive does not communicate. Otherwise the alarm
will only be displayed briefly and then deleted automatically.
Possible causes for the continual presence of this alarm:
- The safe motion monitoring is only activated in $MA_SAFE_FUNCTION_ENABLE, but not in the cor-
responding parameter of the assigned drive (p9501).
- The axis -> drive assignment in MD $MA_SAFE_CRTLOUT_MODULE_NR, MD
$MN_SAFE_DRIVE_LOGIC_ADDRESS or p0978 is incorrect.
- PROFIBUS connector has fallen out.
Check the correctness of parameter p9501 and the assignment of the drive in MD
$MA_SAFE_CTRLOUT_MODULE_NR and $MN_SAFE_DRIVE_LOGIC_ADDRESS, p0978.
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
27050 Axis %1 SI communication failure.
Parameters: %1 = Axis number
Definitions: Communication with the drive for Safety Integrated motion monitoring is additionally monitored.
This monitoring has found an error.
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
In addition, a STOP F is triggered that may cause follow-up alarm 27001 with error code 0 as well as
alarms 27023 and 27024. Alarm 27001 with error code 0 can be avoided by alarm reduc-
tion($MN_SAFE_ALARM_SUPPRESS_LEVEL higher or equal to 1).
Remedy: Check the connections between NCK and drive.
Check the configuration of the PROFIBUS telegram (e.g. SI slot configured).
Check the assignment of the NCK SI axis to the SI slot ($MA_SAFE_CTRLOUT_MODULE_NR,
$MN_SAFE_DRIVE_LOGIC_ADDRESS).
Check for compliance with the EMC requirements.
Check the assignment of the telegram configuration for the slave OM
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
27060 Axis %1 Drive assignment checksum error. Confirmation and acceptance
test required!
Parameters: %1 = Axis number
Definitions: The axial MDs $MA_SAFE_... and $MN_SAFE_DRIVE_LOGIC_ADDRESS are protected by a
checksum. The alarm indicates that the current checksum no longer corresponds to the stored check-
sum, this means that an MD has either been changed without authorization or is faulty.
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009