
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
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Simple spindle synchronous control does not guarantee synchronous
spindle operation. However, in a control mode featuring a position loop,
such as Cs contour axis control mode, rigid tapping mode, and spindle
positioning mode, the synchronization of both spindles can be guaranteed
by matching the position gain of one spindle to that of the other.
For this purpose, phase error monitor signal SYCAL is provided to
monitor both spindles for phase error. The error between the two spindles
is constantly monitored. If an error that exceeds the value set in parameter
No. 4811 is detected, the signal is set to 1. If a detected error does not
exceed the value set in parameter No. 4811, the signal is set to 0.
In spindle mode, however, this signal SYCAL is ignored, being set to 0
at all times.
Note that even if phase error monitor signal SYCAL is output, no CNC
alarm is issued.
This signal is designed to be used by the PMC to monitor the machine
synchronization state. Its usage varies depending on the machine tool
builder. The use of this signal is not mandatory.
NOTE
During simple spindle synchronous control,
synchronization between the first and second spindles is
not guaranteed in spindle mode. However, in Cs contour
axis control mode, rigid tapping mode, and spindle
positioning mode, the synchronization of the spindles can
be guaranteed by matching the position gain of one spindle
with that of the other.
Note that spindle synchronization cannot be guaranteed if
either spindle is undergoing reference position return in Cs
contour axis control mode or orientation in spindle
positioning mode, or if it is using a function (such as spindle
orientation) that is specified directly from the PMC.
D Simple spindle
synchronization and
phase error monitor
signal