Siemens SINUMERIK 840D sl Function Manual page 940

Synchronous Spindles (S3)
Special features of synchronous mode
14.4.5 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.
14.4.6 Delete synchronism correction and NC reset
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
● A synchronism correction active during NC reset but not at the part program end is
● 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
14.4.7 Special points regarding start-up of a synchronous spindle coupling
Spindle start-up
The leading and following spindles must be started up initially like a normal spindle. The
corresponding method is described in
References:
/IADC/ Commissioning Manual SINUMERIK 840D
/FB1/ 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
● Required coupling mode (setpoint, actual value or speed coupling)
940
with COUPON(..)/COUPONC(..), an existing synchronism correction is adopted in the
setpoint position.
adopted in the setpoint position. This does not affect the synchronism signals.
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
involved.
(for permanently configured coupling with channel-specific machine data MD21300
$MC_COUPLE_AXIS_1[n])
(for permanently configured coupling with channel-specific machine data
MD21310 $MC_COUPLING_MODE_1[n])
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions