Estun ETS-101010APC-CAN - Page 70

ETS Series AC Servo User's Manual
- 69 -
(5)Electronic Gear Ratio Equation
：Deceleration ratio
Reference pulse
)/( Pmm
B
A
+
—
Speed
loop
×4
n
Pitch＝P（mm/rev）
m
Servomotor
PG(P/rev))
:)/( Pmm
Reference unit
Encoder pulses
P（mm/rev）：Ball screw pitch
n
m
mP
A
Bpn
G 


4)(

n
m
P
P
pn
mP
A
B GG








 44
)(
Set A and B with the following parameters：
A B
：Pn202 ：Pn201
PG(P/rev))：
Position
loop