Maxsine EP3 AC Series, User Manual

Page: 67 / 246

4.2 Position control mode
57
pulse command one in quantity Movement
shaft load of turn one in quantity Movement
(Pc) shaft load of turn one in number pulse Command

The calculated result will be abbreviated and make the numerator and the denominator smaller or
equal to 32767 integer values. At last, the result must be in the range of 1/50<N/M<200 and
write to the parameter list.
1. Electronic gear is used for ball screw drive
The ball bearing screw load has
R P
P
M
N
c
t


) ( ratio gear Electronic
Here
，
P
Pitch


c
P
Take the incremental encoder as the example
：
Known the encoder line number C=2500 line, the reducer gear ratio 1/1, pitches Pitch=8mm,
a pulse travel equivalent Δ P=0.001mm. Calculate the electronic gear ratio.
Calculation step ：
 Calculate the resolution of the encoder (P
t
)
) / ( 10000 2500 4 4 P
t
rev pulse C
    
 Calculate the command pulse numbers for one turn of the load shaft (ball-screw) (P
c
)
8000
001 . 0
8
P
c
 


mm
mm
P
Pitch
 Calculate the electronic gear ratio.