Yaskawa MP940 - Manual (Page 131)

MP940 Functions
4.4.8 Electronic Gear
4-38
• When ball screw pitch is 5 mm and reference unit is 0.001 mm:
5. Set the gear ratio at the encoder and at the machine.
• No. 10 setting range: 1 to 2
31
-1 (1 = 1 reference unit)
• The load travel distance per revolution of load shaft = 12 mm
When minimum reference unit = 0.001 mm (reference unit: mm; digits below deci-
mal point: 3), set as follows:
• When configured for motor shaft to rotate m times, and for load shaft to rotate n
times, set the values as follows:
Setting range: 1 to 65,535 (revolutions)
• When configured as follows:
Ball Screw Disc Table Belt & Pulley
5
0 001
5000
.
= （指令単位） 5,000 (reference units)
P
Load shaft
P: Pitch
1 revolution =
Reference unit
P
Load shaft
1 revolution =
Reference unit
360°
D
π D
Load shaft
D: Pulley diameter
1 revolution =
Reference unit
D π
を設定します。 12000
0.001mm
12mm
No.19 = =
12,000 No. 10
No.21 m
No.22 n
=
=






回転
回転
の値を設定します。
No.21 m
No.22 n
=
=






回転
回転
の値を設定します。
No. 11 = m rotations
No. 12 = n rotations
m revolutions
of motor shaft
7 revolutions
4 revolutions
3 revolutions
9 revolutions
n revolutions
of load shaft
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
= × =
=
=






No. 11 = 21
No. 12 = 4
Deceleration rate
Therefore set the following: