
2.EXPLANATION OF OPERATION MODES FANUC AC SPINDLE MOTOR αi series B-65280EN/05
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Parameter No.
16i 30i
Description
4056 to 4059 4056 to 4059 Spindle-to-motor gear ratio data
NOTE
1 Usually, use the 1/100 unit (setting "0").
2 When the 1/100 unit is set as the gear ratio setting
resolution (with the bit set to 0), a steady-state
synchronous error may be indicated due to the
fraction of the gear ratio.
In such a case, the synchronous error can be
improved when the 1/1000 unit is set as the gear
ratio setting resolution (with the bit set to 1).
SYCREF Setting for function performing automatic detection of the
one-rotation signal on spindle synchronous control
0 : Automatic detection of the one-rotation signal carried out
1 : Automatic detection of the one-rotation signal not carried out.
(When spindle phase synchronous control is not carried out)
When the mode is switched to spindle synchronous control mode after
power-on, the two spindles automatically perform a one-rotation
signal detection operation. So, the spindles automatically make two to
three turns even if such turns are not intended.
This operation is required because the one-rotation signal must be
detected to enable spindle phase synchronous control.
If the two spindles are mechanically connected to disable each spindle
from performing a one-rotation signal detection operation, or if
spindle phase synchronous control is not exercised, the operation
above can be disabled by setting this bit to 1.
When this parameter is set to "1", check that the one-rotation signal
has been detected for both spindles (output signal PC1DTA = 1)
before applying the spindle phase synchronous control signal
(SPPHS).
If the one-rotation signal is not detected, specify a speed of several ten
min
-1
or higher in spindle synchronous control mode, and wait until
the one-rotation signal is detected. (See sequence example (4).)
16i
4032
Acceleration at spindle synchronous control
Unit of data : 1min
-1
/sec (when parameter No. 4006#2 (SPDUNT) = 1, 10 min
-1
)
Valid data range : 0 to 32767
Standard setting : 0
This parameter sets an acceleration value for linear
acceleration/deceleration when the synchronous speed command for
spindle synchronous control is changed.