
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
52
16i/16015
15i
Maximum speed of position coder signal detection
6598 3098 3098 4098
6738 3238
1st–
2nd–
Data unit : 1min
–1
(When parameter No. 4006 #1 (GRUNIT) =1,
10min
–1
)
Data range : 0 to 32767
Standard setting : 0
Parameter for setting the maximum speed of position coder signal
detections possible.
If the parameter is set to ”0”, the speed of detections possible is the same
as the maximum speed (parameter No. 4020) for the motor
16i/16015
15i
Number of spindle gear teeth (HIGH) !CTH1A=0
6935 3315 3171 4171
6975 3535
1st–
2nd–
Number of position detector gear teeth (HIGH) !CTH1A=0
6936 3316 3172 4172
6976 3536
1st–
2nd–
Number of spindle gear teeth (LOW) !CTH1A=1
6937 3317 3173 4173
6977 3537
1st–
2nd–
Number of position detector gear teeth (LOW) !CTH1A=1
6938 3318 3174 4174
6978 3538
1st–
2nd–
Data unit :
Data range : 0 to 32767
Standard setting : 0
These parameters set an arbitrary gear ratio between the spindle and
position detector (position coder). These parameters are used when the
function for spindle orientation with a reference switch is used (when bit
3 of parameter No. 4009 (PCGEAR) is set to 1).
When bit 3 of parameter No. 4009 (PCGEAR) is 1, this parameter is
assumed to be 1 even if 0 is specified.
When the spindle gear has 27 teeth, and the gear for the motor with a
built–in sensor has 54 teeth, for example, set the parameters as follows:
Parameter No. 4171 = 1 (27)
Parameter No. 4172 = 2 (54)
16i/16015
15i
Detection level for the approach signal for position coder method orientation
6276 3456 3312 4312
6456 3676
1st–
2nd–
Data unit : +1 pulse
Data range : 0 to 32767
Standard setting : 0
This parameter sets the detection level for the approach signal for position
coder method orientation (POAR2). When the spindle is within the
parameter–set range, orientation approach signal (POAR2) is set to 1.