Behavior Of Synchronism Signals During Synchronism Correction; Delete Synchronism Correction And Nc Reset; Special Points Regarding Start-Up Of A Synchronous Spindle Coupling - Siemens SINUMERIK 840D sl Function Manual

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S3: Synchronous spindle

14.4 Points to note

Behavior of synchronism signals during synchronism correction

Effect of synchronism correction

New synchronism signals are produced by comparing the actual values with the corrected

setpoints. Once a correction process has been undertaken, the synchronism signals should

be present again.

Variable $AA_COUP_CORR[Sn] returns the value zero for different situations in which the

synchronism correct is deleted:

● Once a synchronized spindle coupling has been activated for the following in question with

COUPON(..)/COUPONC(..), an existing synchronism correction is adopted in the setpoint

● A synchronism correction active during NC reset but not at the parts program end is adopted

in the setpoint position. This does not affect the synchronism signals.

● At M30, an existing synchronism correction is retained

● At the user end, the correction value can also be deleted at any early point by describing

the variable $AA_COUP_CORR with the value zero. The synchronism correction is

removed immediately and using a ramp with reduced acceleration rate if larger values are

Spindle start-up

The leading and following spindles must be started up initially like a normal spindle. The

appropriate procedure is described in:

CNC Commissioning Manual: NCK, PLC, Drive

Function Manual Basic Functions; Spindles (S1)

Requirements

The following parameters must then be set for the synchronous spindle pair:

● The machine numbers for the leading and following spindles

(for permanently configured coupling with channel-specific machine data MD21300

$MC_COUPLE_AXIS_1[n])

● The required coupling mode (setpoint, actual value or speed coupling)

(for permanently configured coupling with channel-specific machine data

MD21310 $MC_COUPLING_MODE_1[n])

Function Manual, 10/2015, 6FC5397-1BP40-5BA3

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Sinumerik 828d