
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
140
The following describes an example of determining the shift amount for
phase synchronization in synchronous control of the spindle phase.
1. Apply synchronous control of the spindle phase by setting the
following:
D SFR = 1 (SRV = 1) for the 1st and 2nd spindles
: M03
D Spindle synchronous speed command = 0 rpm
:S0
D For the 1st and 2nd spindles, set 0 in the parameter for the
shift amount for spindle phase synchronization control.
2. After establishing spindle phase synchronization, set SFR for the
2nd spindle to 0 (to deactivate the motor).
The 2nd spindle must be rotated manually because the power to
its motor is turned off.
3. Manually rotate the 2nd spindle to the next position where
spindle phase synchronization is to be established.
On the diagnosis screen indicating the number of error pulses
between the two spindles, check the number of error pulses
output between the first position where spindle phase
synchronization was established to the next position where
spindle phase synchronization is to be established.
This value serves as data to be set in the parameter for the shift
amount used for spindle phase synchronization.
4. Set the number of pulses, determined as above, in the parameter
for specifying a shift amount for spindle phase synchronization
for the 2nd spindle.
In general, set 0 in the parameter for the shift amount for spindle
phase synchronization for the 1st spindle.
5. After cancelling the spindle synchronization command, perform
another spindle phase synchronization operation, according to
the following settings, to check that phase synchronization has
been established as expected:
D SFR = 1 (SRV = 1) for the 1st and 2nd spindles
: M03
D Spindle synchronous speed command = 0 min
–1
:S0
2.6.6
Specifying a Shift
Amount for Spindle
Phase Synchronization
Control