Reaction: Alarm Display - Siemens Sinumerik 840D sl Diagnostic Manual

Overview of Alarms
NCK alarms
26051 [Channel %1: ] In block %2 unanticipated stop crossed in continuous
path mode
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The path interpolation did not stop, as required, at the end of the block, but will only decelerate to a
standstill in the next block. This error situation occurs if the stop at block change was not planned by
the path interpolation or was not detected early enough. A possible cause is that the PLC changed the
spindle speed when MD35500 $MA_SPIND_ON_SPEED_AT_IPO_START > 0, and the machine has
to wait until the spindle has returned to the setpoint range. Another possible cause is that a synchro-
nized action needs to be finished before the path interpolation continues. The alarm is only output if
MD11400 $MN_TRACE_SELECT = 'H400'. The alarm output is normally suppressed. - MD11400
$MN_TRACE_SELECT has SIEMENS password protection.
Reaction: Alarm display.
Remedy: MD35500 $MA_SPIND_ON_SPEED_AT_IPO_START = 1. Program G09 before the alarm output in
the block to allow the path interpolation to stop as planned.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
26052 [Channel %1: ] In block %2: path velocity too high for auxiliary function
output
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: This alarm usually occurs in a block with auxiliary function output during a movement. In this case, the
wait for acknowledgement of the auxiliary function was longer than planned.
The alarm also occurs if internal control inconsistencies cause continuous path mode (G64, G641, ...)
to be blocked unexpectedly.
The path interpolation stops abruptly at the end of the block indicated in the message (regenerative
stop). On the next block change, the path continues unless the abrupt stop has caused an error in the
position controller (e.g. because MD36400 $MA_CONTOUR_TOL setting was over-sensitive).
Reaction: Alarm display.
Remedy: - If the alarm occurred in a block with auxiliary function output during the movement: from SW 5.1 or
higher, increase machine MD10110 $MN_PLC_CYCLE_TIME_AVERAGE or
- Program G09 in the block indicated in the message to allow the path interpolation to stop as planned.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
26053 [Channel %1: ] Block %2 interpolation problem in Look Ahead (module
%3, identifier %4)
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Module identifier
%4 = Error code
Definitions: Synchronism between interpolation and preparation is faulty.
Reaction: Interpreter stop
Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Please contact Siemens.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
26054 [Channel %1: ] Block %2 interpolation warning in Look Ahead (module
%3, problem %4)
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Module identifier
%4 = Error code
2-384
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009