
5.FUNCTION DESCRIPTIONS FANUC AC SPINDLE MOTOR αi series B-65280EN/05
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15
i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
3353 4353 4353
RVSVC2 VFBAV
VFBAV Velocity feedback signal setting in torque tandem operation
0 : For speed control, the master SPM motor speed only is used.
1 : For speed control, the average speed of the master SPM and
slave SPM is used.
By exercising speed control using the average speed feedback value of
the master and slave, vibration caused by spindle backlash may be
suppressed.
RVSVC2 Relationship of master/slave motor rotation directions in torque
tandem operation
0 : The master motor and slave motor rotate in the same direction at
spindle rotation time (as viewed from the motor shaft).
1 : The master motor and slave motor rotate in the opposite
directions at spindle rotation time (as viewed from the motor
shaft).
This parameter sets the polarity for a speed command and feedback
signal in torque tandem operation.
NOTE
1 This parameter need not be set for the slave SPM
side. (The setting for the master SPM is transferred
to the slave SPM by inter-SPM communication.)
2 If the setting of this parameter is improper, the
torque tandem function does not operate normally.
If the spindle is rotated in this state, the speed
polarity error alarm (SPM alarm d0) is issued in
torque tandem operation.
15
i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
3398 4398 4398
A130DN
WNDTDM
WNDTDM Whether to use the twin drive function
Set this parameter to 0.
NOTE
If this bit is set to 1, the torque tandem function
does not operate normally. Be sure to set this bit to
0.
A130DN Whether to detect a speed polarity error (SPM alarm d0) in torque
tandem operation
0 : Detects the error.
1 : Does not detect the error.