
B-65280EN/05 FANUC AC SPINDLE MOTOR βi series 2.EXPLANATION OF OPERATION MODES
- 365 -
(3) When the external one-rotation signal (proximity switch) is used
[Sample system configuration]
Spindle motor with built-in M
i
sensor (or MZ
i
sensor)
Spindle
JYA3
JYA2
External one-rotation
signal (proximity switch)
SVPM
(TYPE A)
Gear or timing belt
NOTE
1 When using the external one-rotation signal
(proximity switch), use the detection arbitrary gear
ratio function (DMR function).
2 When using the detection arbitrary gear ratio
function (DMR function), set the following:
- Parameters (No. 4171 to No. 4174) for the
numerator/denominator of an arbitrary gear ratio
between the motor sensor and spindle
3 Set the type of the external one-rotation signal
(proximity switch) (bits 3 and 2 of No. 4004).
4 For stable detection of the one-rotation signal, set a
reference position return speed (No. 4074) from 50
to 100 min
-1
according to the specification of the
used external one-rotation signal (proximity switch).
5 When orientation based on the external one-rotation
signal is used together, match the reference position
return speed and direction with the orientation speed
and direction.