S3: Synchronous spindle
13.4 Points to note
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
743
13.4.5 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.
13.4.6 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
with
COUPON(..)/COUPONC(..), an existing synchronism correction is adopted in the setpoint
position.
● 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
involved.
13.4.7 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
appropriate procedure is described in:
References:
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])
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