Yaskawa MP940 Reference Manual - Manual (Page 430)

MotionSuite™ MP940 Machine Controller Reference Manual Position Control
11-33
In the case of Electronic Gearing Parameter Setting Example (A) “Ball Screw”
The various parameter settings are as follows when “command unit” =
“output unit” = 0.001mm in the above mechanical system.
Number 21 Servomotor
Gear Ratio • Parameter that sets up gear ratio between the
motor and load. When configured so that the
load axis rotates ‘ n’ times when the servo motor
axis rotates ‘ m’ times.
• Setting range:1 ~ 65535 (rotations)
Setting Example
1
Number 22 Machine Gear
Ratio 1
Fixed Servo
Parameter Number
Name Content
Initial
Value
No. 21 = m rotation
No. 22 = n rotation
}
are set
減速比
したがって を設定します。
=
n
m
3
7
4
9
4
21
No.21 21
No.22 4
= × =
=
=
­®
¯
½¾
¿
When
Motor Axis
m Rotations
7
Rotations
3 Rotations
9 Rotations
4 Rotations
Load
Axis
n Rotations
Deceleration
Therefore, set
Motor
m
7 Rotations
5 Rotations
n
Ball Screw Pitch
P=6mm/Rotation