
2.EXPLANATION OF OPERATION MODES FANUC AC SPINDLE MOTOR αCi series B-65280EN/05
- 430 -
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.
NOTE
1 A parameter is selected by the input signals CTH1A
and CTH2A. Ensure that the gear or clutch state
corresponds to the input signals CTH1A and
CTH2A. When the signals are not input correctly, the
overcurrent alarm (SPM alarm 12) can be issued.
2 When using a position coder, be sure to set this
parameter. If this parameter is not set correctly, the
velocity error excess alarm (SPM alarm 02), motor
binding alarm (SPM alarm 31), or gear ratio
parameter setting error alarm (SPM alarm 35) may
be detected.
3 When an improper value is set in this parameter, 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.
15i 16i 30i
3060 4060 4060
Position gain on orientation (HIGH) CTH1A=0, CTH2A=0
3061 4061 4061
Position gain on orientation (MEDIUM HIGH) CTH1A=0, CTH2A=1
3062 4062 4062
Position gain on orientation (MEDIUM LOW) CTH1A=1, CTH2A=0
3063 4063 4063
Position gain on orientation (LOW) CTH1A=1, CTH2A=1
Unit of data : 0.01sec
-1
Valid data range : 0 to 32767
Standard setting : 1000
These parameters set the position gain for orientation.
A parameter is selected by the CTH1A and CTH2A input signals.