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Descri
tion
Design.
DateEd
01.03.23
SHEET
DRAW. No.
CUST.
TITLE
okota
okota
Newly designed
i series Spindle
Start-up Procedure
-53866E-387/02
FANUC LTD
1
(3) Compare the conditions when the motor is driven and when the motor
is coasting.
If considerably less vibration and noise is observed while the motor is
coasting, the control circuitry is faulty. If the same degree of vibration
and noise is observed, however, the motor or machine is faulty.
The motor starts coasting and an alarm is issued if the fedback signal
cable is disconnected while the motor is rotating.
7.4 When overshoot or hunting occurs
(1) Check the parameter settings.
(a) The velocity loop gain value may be too large. Adjust the
parameters indicated below.
0 15
15i 16i/16
Description Settings
6540 3040 3040 4040 Velocity loop proportional gain
(HIGH)
6541 3041 3041 4041 Velocity loop proportional gain
(LOW)
6548 3048 3048 4048 Velocity loop integral gain
(HIGH)
6549 3049 3049 4049 Velocity loop integral gain
(LOW)
Specify a small
value.
7.5 When the cutting capability is degraded
(1) Check the parameter settings
(a) Parameter data for each motor
(b) Limited output pattern and output limit
0 15
15i 16i/16
Description
6528 3028 3028 4028 Sets a limited output pattern.
6529 3029 3029 4029 Output limit
(2) Check the input signal
(a) Torque limit command (TLMH, TLML)
0 15
15i 16i/16
7 6 5 4 3 2 1 0
G229 G227 G227 G070 TLMHA TLMLA
(3) Check the machine.
(a) Belt tension, etc.