
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 2.EXPLANATION OF OPERATION MODES
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15i 16i 30i
3042 4042 4042
Velocity loop proportional gain on orientation (HIGH) CTH1A=0
3043 4043 4043
Velocity loop proportional gain on orientation (LOW) CTH1A=1
Unit of data :
Valid data range : 0 to 32767
Standard setting : 10
This parameter sets the velocity loop proportional gain for spindle
orientation.
When the CTH1A input signal is set to 0, proportional gain for the
HIGH gear is selected. When the CTH1A input signal is set to 1,
proportional gain for the LOW gear is selected.
15i 16i 30i
3050 4050 4050
Velocity loop integral gain on orientation (HIGH) CTH1A=0
3051 4051 4051
Velocity loop integral gain on orientation (LOW) CTH1A=1
Unit of data :
Valid data range : 0 to 32767
Standard setting : 10
This parameter sets the velocity loop integral gain for spindle
orientation.
When the CTH1A input signal is set to 0, integral gain for the HIGH
gear is selected. When the CTH1A input signal is set to 1, integral
gain for the LOW gear is selected.
15i 16i 30i
3056 4056 4056
Gear ratio (HIGH) CTH1A=0, CTH2A=0
3057 4057 4057
Gear ratio (MEDIUM HIGH) CTH1A=0, CTH2A=1
3058 4058 4058
Gear ratio (MEDIUM LOW) CTH1A=1, CTH2A=0
3059 4059 4059
Gear ratio (LOW) CTH1A=1, CTH2A=1
Unit of data : (Motor rotation for one rotation of spindle) / 100
(When parameter No. 4006 #1 (GRUNIT) is 1, motor rotation / 1000)
Valid data range : 0 to 32767
Standard setting : 100
These parameters set the gear ratio of the spindle motor relative to the
spindle.
When the motor rotates 2.5 times, for every rotation of the spindle, for
example, set 250 in the parameter.
A parameter is selected by the CTH1A and CTH2A input signals.
The gear or clutch status must correspond to the status of the CTH1A
and CTH2A input signals.
NOTE
When an improper value is set in these
parameters, an unexpected operation can occur.
For example, the spindle can continue rotating
without stopping at the time of orientation. So, be
sure to set a proper gear ratio.