
FANUC AC SPINDLE MOTOR aC series
1. ADJUSTMENT
B–65160E/02
258
(1) Setting of following parameter.
0 15 16 Description Setting data
6511
#3
3011
#3
4011
#3
Poles of motor 1
6520 3020 4020 Maximum motor
speed
Set right value
6548
to
6549
3048
to
3030
4048
to
4049
Velocity loop integral
gain on normal
operation
Set larger value
Parameter related to spindle speed commands. (See Section 1. 2. 3.)
(1) Setting of following parameter.
0 15 16 Description Setting data
6540
to
6541
3040
to
3041
4040
to
4041
Velocity loop
proportional gain on
normal operation
Set smaller value
(2) Compare the conditions when the motor is driven and when the motor
is free running. If considerably less vibration and noise is observed
while the motor is free running, the control circuit side will be faultly.
If the same degree of vibration and noise is observed, the motor or
machine will be faultly.
The motor starts free running and alarm is issued if the position
feedback cable or over haet cable is desconnected while motor is
rotating. Before attempting to go free running, check with the
machine tool builder. The machine will stop depending on the
sequence.
1.3.2
The Motor Does Not
Rotate at the
Commanded Speed
1.3.3
The Motor Vibrates and
Generates Noise while
Rotating