
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 1.START-UP
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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.
Example :
When the spindle rotates once, set "250" as the data when the
motor rotates 2.5 times.
A parameter is selected with the CTH1A and CTH2A input signals.
Set the gear or clutch status to correspond to the clutch/gear signal
(CTH1A, CTH2A).
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.
15i 16i 30i
3098 4098 4098
Maximum speed for position feedback signal detection
Unit of data : 1min
-1
(Unit of 10 min
-1
when bit 2 (SPDUNT) of parameter No. 4006
= 1)
Valid data range : 0 to 32767
Standard setting : 0
This parameter sets a maximum spindle speed that enables the
detection of a motor/spindle sensor feedback signal.
When "0" is set in this parameter, up to the maximum motor speed can
be detected.
NOTE
Usually, set “0”.