Gantry axes (G1)
6.4 Start-up of gantry axes
Turning, Milling, Nibbling
102 Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Synchronizing gantry axes
The gantry synchronization process must be activated with IS "Start gantry synchronization"
(see Section "Referencing and synchronizing of gantry axes"). Once the axes have been
synchronized (IS "Gantry grouping is synchronized" = 1), the dimensional offset between the
leading and synchronized axes must be checked to ensure that it equals 0. Corrections may
need to be made in the machine data mentioned above.
Input of gantry warning limit
Once the reference point values for the leading and synchronized axes have been optimized
so that the gantry axes are perfectly aligned with one another after synchronization, the
warning limit values for all axes must be entered in the following machine data:
MD37110 GANTRY_POS_TOL_WARNING (gantry warning limit)
To do this, the value must be increased incrementally until the value is just below the alarm
(limit exceeded) response limit. It is particularly important to check the acceleration phases.
This limit value also determines the position deviation value at which gantry synchronization
is automatically started in the control.
Calculating and activating compensations
In cases where the gantry axes require compensation (sag or leadscrew error), the
compensation values for the leading axis and the synchronized axis must be calculated and
entered in the appropriate parameters or tables.
Refer to the section titled "Compensations (K3)".
Function generator/measuring function
The activation of the function generator and measuring function using the startup tool will be
aborted on the synchronized axis with an error message.
When an activation of the synchronized axis is absolutely necessary (e.g. to calibrate the
machine), the leading and synchronized axes must be temporarily interchanged.
Note
Generally, the start of the function generator, measuring functions and AM setup triggers the
virtual axes to abort upon error recognition.
Special cases
If individual axes have to be activated, the gantry groups must be temporarily canceled. As
the second axis no longer travels in synchronism with the first axis, the activated axis must
not be allowed to traverse beyond the positional tolerance.
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