Siemens Sinumerik 840D sl Diagnostic Manual page 435

03/2009
Remedy: Possible causes of the continual presence of this alarm:
- The NCK monitoring channel for safe motion monitoring is not communicating with the monitoring
channel of the assigned drive but with that of another axis. Check the correctness of the assignment
of the drive in the hardware configuration, $MA_SAFE_CTRLOUT_MODULE_NR,
$MN_SAFE_DRIVE_LOGIC_ADDRESS, and p0978.
- Interference in the communication between NCK and drive. Check compliance with the EMC guide-
lines. Exchange hardware.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
27113 Axis %1 hardware encoder error of the safe actual value.
Parameters: %1 = Axis number
Definitions: Encoder evaluation outputs a hardware error. The reasons may be pollution in
the visual encoder evaluation or problems during signal transmission.
Reaction: Alarm display.
In addition, a Stop F is triggered that may cause follow-up alarm 27001 with error code 0 as well as
alarms 27023 and 27024.
Alarm 27001 with error code 0 can be avoided by alarm reduction
($MA_SAFE_ALARM_SUPPRESS_LEVEL higher or equal to 1).
Remedy: Verification of compliance with the EMC regulations.
Replace the encoder hardware.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
27124 Stop A triggered at least in 1 axis
Definitions: This is only an informational alarm indicating that Stop A has been triggered in at least 1 axis and
Power On is required for alarm acknowledgment.
This alarm occurs if the alarm priority function was activated in MD
$MN_SAFE_ALARM_SUPPRESS_LEVEL.
Reaction: Interface signals are set.
Alarm display.
Trigger a "Pulse suppression" for the affected axis.
Remedy: Find the error cause by means of further alarm messages.
Program Con- Switch control OFF - ON.
tinuation:
27140 Waiting for motor module of at least one axis.
Definitions: Alarm during ramp-up as long as the motor module of at least one axis is not yet ready for SI.
Communication to the motor module during ramp-up has not yet been activated; the safety functions
of at least one axis are not yet available.
Via MD $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD<3) the alarm display can be set to display for
each axis individually whether communication has been activated.
Reaction: Interface signals are set.
Alarm display.
Remedy: The alarm will remain present during ramp-up if at least one drive does not communicate. Otherwise,
the alarm will only briefly be displayed, and then be deleted automatically.
Possible causes of the continued presence of the alarm:
- Safe motion monitoring has only been activated in $MA_SAFE_FUNCTION_ENABLE, but not in the
corresponding parameter of the assigned drive (p9501).
- The axis -> drive assignment is incorrect in MD $MA_SAFE_CRTLOUT_MODULE_NR, MD
$MN_SAFE_DRIVE_LOGIC_ADDRESS or p0978.
- PROFIBUS plug has fallen out.
Check the correctness of parameter p9501 or the assignment of the drives in MD
$MA_SAFE_CTRLOUT_MODULE_NR, $MN_SAFE_DRIVE_LOGIC_ADDRESS, p0978.
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
© Siemens AG, 2009. All Rights Reserved
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
Overview of Alarms
NCK alarms
2-435