Siemens SINUMERIK 840Di Diagnostic Manual page 408

Overview of Alarms
NCK alarms
22270 Channel %1 block %2 maximum velocity of thread axis at position %3
reached
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Position
Definitions: The axis velocity is too high for thread cutting. The maximum feedrate was reached at the axis position
indicated. The velocity of the thread axis depends on:
- The programmed thread pitch
- The programmed thread lead change (G34)
- The thread length (G34)
- The defined spindle speed (part program, FC18, synchronized action)
- The spindle override (path and individual axis overrides are ineffective)
Reaction: Alarm display.
Remedy: Reduce the velocity for at least one of the above factors.
Program Clear alarm with the Delete key or NC START.
Continuation:
22275 Channel %1 block %2 zero velocity of thread axis at position %3 reached
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Position
Definitions: An axis standstill was reached at the specified position during thread cutting with G35 due to the linear
decrease in the thread lead. The standstill position of the thread axis depends on:
- Programmed thread lead decrease
- Thread length
Reaction: Alarm display.
Remedy: Change at least one of the above factors.
Program Clear alarm with the Delete key or NC START.
Continuation:
22280 Channel %1 in block %2: Prog. acceleration path too short %3, %4
required
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Prog. acceleration path
%4 = Required acceleration path
Definitions: In order to stay within the programmed acceleration path, the acceleration caused an overload on the
thread axis. In order to accelerate the axis with the programmed dynamic response, the length of the
acceleration path must be at least as large as the value in parameter %4.
The alarm is of the technological type and is output whenever bit 2 in $MN_ENABLE_ALARM_MASK
is enabled. The MMC softkey 'Technology support' sets and clears this bit in the MD.
Reaction: Alarm display.
Remedy: Modify part program or reset MD $MN_ENABLE_ALARMMASK bit 2.
Program Clear alarm with the Delete key or NC START.
Continuation:
2-408
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006