Siemens SINUMERIK 840Di Diagnostic Manual page 463

11/2006
27031 Axis %1 limit value for safe velocity %2 at gear ratio %3 too large (max.
%4)
Parameters: %1 = Axis number
%2 = Limit value index
%3 = Number of the transmission ratio
%4 = Maximum velocity
Definitions: All limit values in MD $MA_SAFE_VELO_LIMIT have to be set in a way that the limit frequency of the
amplitude monitoring in the measuring circuit hardware is not exceeded. The limit value which did not
fulfil this condition is indicated as second parameter (1 for SG1, 2 for SG2, etc.). The third parameter
indicates the gear stage, e.g. 1 for gear stage 1, 2 for gear stage 2, etc. The fourth parameter indicates
the maximum velocity which can be entered to just maintain the limit frequency in safe operation.
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Trigger a "Pulse suppression".
Remedy: Reduce the limit value in MD $MA_SAFE_VELO_LIMIT[x], x = (2nd alarm parameter) - 1, or correct
the setting of the gear factors.
Program Switch control OFF - ON.
Continuation:
27032 Axis %1 checksum error %2 of safe monitoring. Confirmation and
acceptance test required!
Parameters: %1 = Axis number
%2 = Index of $MA_SAFE_ACT_CHECKSUM
Definitions: The relevant MDs $MN_SAFE_..., $MN_PROFISAFE_..., $MA_SAFE ... are protected by a
checksum. The alarm indicates that the current checksum does not coincide any longer with the stored
checksum, which means that either an MD value has been changed without authorization or an MD
is defective.
The 2nd parameter indicates the field entry of $MA_SAFE_ACT_CHECKSUM in which the error was
found.
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Check MDs. Allow the checksum to be recalculated. Re-accept safety functions.
Program Switch control OFF - ON.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-463