Siemens SINUMERIK 840Di Diagnostic Manual page 423

11/2006
26007 Axis %1 QEC: invalid coarse step size
Parameters: %1 = Axis name, spindle number
Definitions: The course step width for QEC must be within the range 1 <= course step width <= maximum value
of MD 18342 MM_QEC_MAX_POINTS (currently 1025), because a greater number of values would
exceed the available memory space.
Reaction: Alarm display.
Remedy: Modify the system variable $AA_QEC_COARSE_STEPS accordingly.
Program Clear alarm with the RESET key. Restart part program
Continuation:
26008 Axis %1 QEC: invalid fine step size
Parameters: %1 = Axis name, spindle number
Definitions: The fine step size for quadrant error compensation $AA_QEC_FINE_STEPS must be in the range 1
<= fine step size <= 16 because this value has an influence on the computation time of the QEC.
Reaction: Alarm display.
Remedy: Modify the system variable $AA_QEC_FINE_STEPS accordingly.
Program Clear alarm with the RESET key. Restart part program
Continuation:
26009 Axis %1 QEC: memory overflow
Parameters: %1 = Axis name, spindle number
Definitions: The product of the data $AA_QEC_COARSE_STEPS+1 and $AA_QEC_FINE_STEPS must not
exceed the maximum number of the characteristic curve points (MD $MA_MM_QEC_MAX_POINTS).
With a direction-dependent characteristic, this criterion applies to 2 *
($AA_QEC_COARSE_STEPS+1) * $AA_QEC_FINE_STEPS!
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. Either increase
$MA_MM_QEC_MAX_POINTS or reduce $AA_QEC_COARSE_STEPS and/or
$AA_QEC_FINE_STEPS.
Program Clear alarm with the RESET key. Restart part program
Continuation:
26010 Axis %1 QEC: invalid acceleration characteristic
Parameters: %1 = Axis name, spindle number
Definitions: $AA_QEC_ACCEL_1/2/3: The acceleration characteristic is divided into three areas. In each area
there is a different quantization of the acceleration steps. The defaults should be changed only if
compensation is inadequate in these acceleration areas.
The defaults are as follows:
- $AA_QEC_ACCEL_1 with approx. 2% of maximum acceleration ($AA_QEC_ACCEL_3),
- $AA_QEC_ACCEL_2 with approx. 60% of maximum acceleration ($AA_QEC_ACCEL_3),
- $AA_QEC_ACCEL_3 with maximum acceleration (32300 MAX_AX_ACCEL).
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. Enter the values correctly: 0 <
$AA_QEC_ACCEL_1 < $AA_QEC_ACCEL_2 < $AA_QEC_ACCEL_3.
Program Clear alarm with the RESET key. Restart part program
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-423