Siemens SINUMERIK 802D sl Manual do Operador descarregar pdf (Página 52)

Overview of alarms 06/2009

NCK alarms

2-52

SINUMERIK 802D sl, Diagnostics Manual, 06/2009

%2 = Block number, label

Definitions: The "Bottleneck detection" (calculation of intersection for the following compensated traversing

blocks) has not been able to calculate a point of intersection for the reviewed number of traversing

blocks. It is therefore possible that one of the equidistant paths violates the workpiece contour.

Reaction: Correction block is reorganized.

Local alarm reaction.

Interface signals are set.

Alarm display.

NC Stop on alarm at block end.

Remedy: Please inform the authorized personnel/service department. Check the part program and, if possible,

modify the programming so that inside corners with smaller paths than the correction value are

avoided. (Outside corners are not critical because the equidistants are lengthened or intermediate

blocks are inserted, so that there is always a point of intersection).

Increase the number of reviewed traversing blocks via machine data MD20240

$MC_CUTCOM_MAXNUM_CHECK_BLOCKS (default: 3), this increases the amount of calculation

and consequently also the block cycle time.

Program Con-

tinuation:

Clear alarm with NC START or RESET key and continue the program.

10752 [Channel %1: ] Block %2 overflow of local block buffer with tool radius

compensation

Parameters: %1 = Channel number

%2 = Block number, label

Definitions: The cutter radius compensation must buffer a variable number of intermediate blocks in order to

enable calculation of the equidistant tool path for each NC block. The size of the buffer cannot be

determined by simple means. It depends on the number of blocks without traversing information in the

compensation plane, the number of contour elements to be inserted and the shape of the curvature

in spline and polynomial interpolation.

The size of the buffer is fixed by the system and cannot be changed via the MDs.

Reaction: Correction block is reorganized.

Local alarm reaction.

Interface signals are set.

Alarm display.

NC Stop on alarm at block end.

Remedy: Please inform the authorized personnel/service department.

Reduce the size of the buffer that has been assigned by modifying the NC program.

- By avoiding:

- Blocks without traversing information in the compensation plane

- Blocks with contour elements having a variable curvature (e.g. ellipses) and with curvature radii that

are smaller than the compensation radius. (Such blocks are divided up into several subblocks).

- Reduce the number of reviewed blocks for collision monitoring (MD20240

$MC_CUTCOM_MAXNUM_CHECK_BLOCKS).

Program Con-

tinuation:

Clear alarm with NC START or RESET key and continue the program.

10753 [Channel %1: ] Block %2 selection of the tool radius compensation only

possible in linear block

Parameters: %1 = Channel number

%2 = Block number, label

Definitions: Selection of tool radius compensation with G41/G42 may only be performed in blocks where the G

function G00 (rapid traverse) or G01 (feed) is active.

In the block with G41/G42, at least one axis in the plane G17 to G19 must be written. It is always advis-

able to write both axes because, as a rule, both axes are traversed when selecting the compensation.

Reaction: Correction block is reorganized.

Local alarm reaction.

Interface signals are set.

Alarm display.

NC Stop on alarm at block end.

Remedy: Correct the NC program and put the compensation selection in a block with linear interpolation.

Program Con-

tinuation:

Clear alarm with NC START or RESET key and continue the program.

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