
B–65160E/02
2. FUNCTION EXPLANATION
FANUC AC SPINDLE MOTOR a series
75
16i/160
15 15i
MS signal constant = (L/2)/(2 p H) 4096
6578 3078 3078 4078
6718 3218
L: Length of magnetizing element (mm)
H: Distance from spindle center to magnetizing element (mm)
Data unit :
Data range : 80 to 1000
Standard setting : 200
In the magnetic sensor method orientation, substitute the followings
into the expression above to set the MS signal constant.
L: Length of magnetizing element (mm)
H: Distance from spindle center to magnetizing element (mm)
Specification
Magnetizing element
MS signal
Name
drawing No.
Type Length [mm]
gain
No specification, standard A57L–0001–0037 0
Magnetic sensor N A57L–0001–0037/N
Standard (type II) 50
0
Magnetic sensor P A57L–0001–0037/P Small type (type III) 50 –20
Magnetic sensor Q A57L–0001–0037/Q Cylindrical, 40 in diameter (type IV) 31 70
Magnetic sensor R A57L–0001–0037/R Cylindrical, 50 in diameter (type V) 37 50
Magnetic sensor S A57L–0001–0037/S Cylindrical, 60 in diameter (type VI) 43 70
Magnetic sensor T A57L–0001–0037/T Cylindrical, 70 in diameter (type VII) 49 40
When H = 100 mm, and L = 50 mm
MS signal constant = (50/2) / (2p 100) 4096 8 163
16i/160
15 15i
MS signal gain adjustment
6579 3079 3079 4079
6719 3219
Data unit :
Data range : –128 to +127
Standard setting : 0
Use this parameter when adjusting the amplitude of the MS signal in
the magnetic sensor method orientation. Set the constant of above table
normally.
16i/160
15 15i
Motor voltage setting on orientation
6584 3084 3084 4084
6724 3224
Data unit : 1%
Data range : 0 to 100
Standard setting : Depends on the motor model
This parameter sets the motor voltage for orientation.
Example
2.3.5
Calculating the
Orientation Time