
B–65160E/02
3. EXPLANATION OF
PARAMETERS
FANUC AC SPINDLE MOTOR aC series
285
16i/16
15
15i
0
Spindle phase synchronization compensation data
6535 3035 3035 4035
6675 3175
Data unit : 1 pulse/2 msec
Data range : 0 to 4095
Standard setting : 10
This parameter reduces speed fluctuation when the spindle phase
synchronization control is executed.
If this parameter is “0”, a speed fluctuation for phase matching becomes
large because the phase synchronization compensation data is specified
at a time, resulting in a steep increase in a phase deviation.
Smooth phase matching can be achieved by dividing the phase
synchronization compensation data by the number of pulses specified in
the parameter and specifying the resulting smaller amount at 2 ms
intervals.
16i/16
15
15i
0
Spindle orientation speed
6538 3038 3038 4038
6678 3178
Data unit : 1 min
–1
Data range : 0 to 32767
Standard setting : 0
This parameter sets the orientation speed at the spindle.
When this parameter is set to “0”, the orientation speed is determined by
parameters such as parameter No.4076,4060 to 4063 etc.
16i/16
15
15i
0
Velocity loop proportional gain on normal operation (HIGH) CTH1 = 0
6540 3040 3040 4040
6680 3180
Velocity loop proportional gain on normal operation (LOW) CTH1 = 1
6541 3041 3041 4041
6681 3181
Data unit : –
Data range : 0 to 32767
Standard setting : Depends on the motor model
This data is used to set the velocity loop proportional gain on normal
operation.
When the load inertia is large, the velocity loop proportional gain can be
increased.
This parameter is selected by the input signal CTH1.