
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 2.EXPLANATION OF OPERATION MODES
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(4) When the spindle motor with built-in Mi sensor (or MZi sensor) is used
Spindle motor with built-in Mi sensor
(or MZi sensor)
Spindle
JYA2
SPM
TYPE A
Directly connected at a ratio of 1:1
or
connected with a gear or timing belt at a ratio of m:n
NOTE
1 When performing rigid tapping by using a signal from
the sensor built into the motor as a position feedback
signal, use one of the following functions if the gear
ratio between the motor and spindle is other than 1:1
(a) Detection arbitrary gear ratio function (DMR
function)
(b) Command arbitrary gear ratio function (CMR
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 When using the detection arbitrary gear ratio function
(DMR function) with a motor containing a built-in MZi
sensor, set bit 6 of No. 4007 to 1 so that the alarms
related to the position feedback signal (when non-Cs
contouring control is exercised) are not detected.
4 When using the command arbitrary gear ratio function
(CMR function) with FS16i, set the following:
- Enable the setting of an arbitrary gear ratio between
the spindle and position coder (bit 1 of No. 5200 = 1).
- Enable the setting of the command arbitrary gear
ratio function (CMR) on rigid tapping (bit 7 of No.
4006 = 1).
- Set the parameters for specifying the number of gear
teeth on the spindle side (No. 5221 to No. 5224).
- Set the parameters for specifying the number of gear
teeth on the position coder side (No. 5231 to No.
5234).
5 Reference position return can be performed when the
spindle is directly connected to the motor or when the
spindle is connected to the motor at a ratio of 1:1.