
2.EXPLANATION OF OPERATION MODES FANUC BUILT-IN SPINDLE MOTOR Bis series B-65280EN/05
- 538 -
15i 16i 30i
3052 4052 4052
Velocity loop integral gain on servo mode/spindle synchronous control (HIGH)
CTH1A=0
3053 4053 4053
Velocity loop integral gain on servo mode/spindle synchronous control (LOW)
CTH1A=1
Unit of data :
Valid data range : 0 to 32767
Standard setting value : 10
These parameters set a velocity loop integral gain on servo mode
(rigid tapping/spindle positioning) or spindle synchronous control.
When the input signal CTH1A = 0, (HIGH) is selected. When the
input signal CTH1A = 1, (LOW) 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 data are used to set the gear ratio between spindle and spindle
motor.Usually, set 100.
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.