
FANUC AC SPINDLE MOTOR aC series
3. EXPLANATION OF
PARAMETERS
B–65160E/02
290
[Rotor inertia and torque data of the Standard motor model]
Motor model
aC1
αC1.5 αC2 αC3 αC6 αC8 αC12 αC15 αC18 αC22
Jm[kg cm sec
2
] 0.03 0.04 0.08 0.15 0.22 0.28 0.93 0.93 1.29 1.29
30min rated torque
at Nb(
min
–1
) : T[kg m]
0.71 2.40 2.40 3.57 4.87 7.14 9.74 12.01 14.28 16.88
16i/16
15
15i
0
Grid shift amount in servo mode (9D12 series only)
6573 3073 3073 4073
6713 3213
Data unit : 1 pulse unit (360°/4096)
Data range : 0 to 4095
Standard setting : 0
Set this parameter when shifting reference point in servo mode (rigid
tapping).
Spindle reference point shifts for set pulse in CCW direction.
16i/16
15
15i
0
Speed for return to reference point in servo mode ( 9D12 series only )
6574 3074 3074 4074
6714 3214
Data unit : min
–1
Data range : 0 to 32767
Standard setting : 0
When this parameter is set to “0”.
In the reference point return in servo mode (rigid tapping), the spindle
speed depends on
PRM4076 (Motor speed limit value on orientation) and PRM4065 to 4068
(Position gain on servo mode).
When this parameter is set to a value other than 0.
In the reference point return in servo mode (rigid tapping), the spindle
speed depends on this parameter.
16i/16
15
15i
0
Orientation completion signal detection level
6575 3075 3075 4075
6715 3215
Data unit : 1 pulse (360°/4096)
Data range : 0 to 100
Standard setting : 10
This data is used to set the detecting level of orientation completion signal
(ORAR).
When the spindle position is located within the setting data on orientation
completion, the bit of orientation completion signal (ORAR) is set to “1”.