
B–65160E/02
1. ADJUSTMENT
FANUC AC SPINDLE MOTOR aC series
257
Symptom Relevant section
1 The motor does not rotate. 1.3.1
2
The motor does not rotate at the commanded
speed.
1.3.2
3
The motor vibrates and generates noise while
rotating.
1.3.3
4 Overshoot or hunting occurs. 1.3.4
5 Deceleration time is too long. 1.3.5
6 The cutting capability is sub–standard. 1.3.6
7 Acceleration/deceleration time is too long. 1.3.7
8
LED indicates a status error
(Status error indication function).
1.3.8
9
Alarm AL–02, AL–31 (excessive speed deviation),
or AL–35 (difference between the inferred speed
and the motor speed obtained from the position
coder signal is higher than the set level) lights.
1.3.9
(1) Check all connections.
(a) Motor power line connection.
(b) DC link connection between the power supply module and
spindle amplifier module.
(c) The contactor of the Emergency stop.
(2) Check the parameter settings.
(a) Setting of following parameter.
0 15 16 Description
6520 3020 4020 Maximum motor speed
6569
to
6972
3069
to
3072
4069
to
4072
Acceleration/Deceleration time constant (If
this data=“0”, motor can not rotate.).
(b) Parameters related to spindle speed commands (See Section
1.2.3.)
(3) Check the Input signal.
16i/16 #7 #6 #5 #4 #3 #2 #1 #0015i15
MRDYA SFRA SRVA
*ESPA
G229 G227 G070
G230 G226 G071
Please check the LED status on the SPMC, instead of the indication “00”
and the motor does not rotate, please check the velocity command from
CNC.
1.3
PARAMETER
ADJUSTMENT
1.3.1
The Motor Does Not
Rotate