
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
66
The parameter settings are given as follows:
Deceleration time constant +
t
J
60
2p
(0.8 to 0.9)
where
τ (Nm) : Maximum motor torque at upper limit of orientation
speed (No. 4038)
J (kgm
2
) : Motor inertia + Load inertia
16i/16015
15i
Deceleration time constant restriction start velocity (HIGH) CTH1A=0
6290 3470 3470 4326
Deceleration time constant restriction start velocity (LOW) CTH1A=1
6294 3474 3474 4330
Data unit : 1 min
–1
Data range : 0 to 32767
Standard setting : 0
This parameter specifies the motor speed at which the restriction of
deceleration time constant starts. If 0 is specified, the lowest
orientation speed internally calculated by the software is assumed.
16i/16015
15i
Command multiplier for spindle orientation by a position coder
6292 3472 3472 4328
Data unit :
Data range : 0 to 32767
Standard setting : 0
This parameter specifies a command multiplier for spindle orientation
function of incremental command external setting type. If 0 is set in
this parameter, 1 is assumed.