Siemens Sinumerik 840D sl Diagnostic Manual page 174

Overview of Alarms
NCK alarms
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
14040 [Channel %1: ] Block %2 error in end point of circle
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: In circular interpolation, either the circle radii for the initial point and the end point are further apart, or
the circle center points are further apart, than specified in the machine data.
1. In circle radius programming the starting and end points are identical, thus the circle position is not
determined by starting and end points.
2. Radii: The NCK calculates from the present start point and the other programmed circle parameters
the radii for the start and the end point.
An alarm message is issued if the difference between the circle radii is either
- greater than the value in the MD21000 $MC_CIRCLE_ERROR_CONST (for small radii, if the pro-
grammed radius is smaller than the quotient of the machine data MD21000
$MC_CIRCLE_ERROR_CONST divided by MD21010 $MC_CIRCLE_ERROR_FACTOR), or
- greater than the programmed radius multiplied by the MD21000 $MC_CIRCLE_ERROR_FACTOR
(for large radii, if the programmed radius is greater than the quotient of the machine data MD21000
$MC_CIRCLE_ERROR_CONST divided by MD21000 $MC_CIRCLE_ERROR_FACTOR).
3. Center points: A new circle center is calculated using the circle radius at the starting position. It lies
on the mid-perpendicular positioned on the connecting straight line from the starting point to the end
point of the circle. The angle in the radian measure between both straight lines from the starting point
to the center calculated/programmed as such must be lower than the root of 0.001 (corresponding to
approx. 1.8 degrees).
Reaction: Correction block is reorganized.
Interface signals are set.
Alarm display.
Remedy: Please inform the authorized personnel/service department.
Check MD21000 $MC_CIRCLE_ERROR_CONST and MD21000 $MC_CIRCLE_ERROR_FACTOR.
If the values are within reasonable limits, the circle end point or the circle mid-point of the part program
block must be programmed with greater accuracy.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
14045 [Channel %1: ] Block %2 error in tangential circle programming
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The alarm may have the following causes:
The tangent direction is not defined for tangent circle, e.g. because no other travel block has been
programmed before the current block. No circle can be formed from start and end point as well as tan-
gent direction because - seen from the start point - the end point is located in the opposite direction to
that indicated by the tangent.
It is not possible to form a tangent circle since the tangent is located perpendicular to the active plane.
In the special case in which the tangent circle changes to a straight line, several complete circular rev-
olutions were programmed with TURN.
Reaction: Correction block is reorganized.
Local alarm reaction.
Interface signals are set.
Alarm display.
NC Stop on alarm at block end.
Remedy: Modify part program.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
2-174
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009