
B–65160E/02
1. ADJUSTMENT
FANUC AC SPINDLE MOTOR a series
29
Spindle
amplifier
TYPE 3
JY2
Motor
JY8 JY6
Motor
MZ sensor
Main
spindle
Sub
spindle
M sensor
Position coder
1. Connect the feedback signal cables.
Detector Connector
Built–in sensor on main spindle side (motor) JY2
Pulse generator on subspindle side (motor) JY6
Position coder on subspindle side (spindle) JY8
2. Set the detector–related parameters. Set (b) above (for the main
spindle side) before attempting the setting below.
Parameter Setting Description
4187 #2, 1, 0 Depends on the detector. Sets a speed detector
(for sub spindle side).
4179 #7, 6, 5, 4 0, 0, 0, 0 Sets a position coder signal
(for sub spindle side).
4177 #2 1 Uses a position coder signal
(for sub spindle side).
(j) When spindle switching control is performed, a M sensor and
position coder are used on the main spindle side, and a motor’s
MZ sensor in a motor and a reference switch are used on the sub
spindle side.