TECO JSDAP Series, Manual

Page: 125 / 255

5-39
Electronic Gear Ratio setting examples
Transmission System Setting Process
Ball Screw
Pulse Value of 1 Rotating for
Encoder=2000pulse/rev
Distance of 1 Rotating for Ball
Screw = 5mm
1. Main positioning specifications:
a) Load Shaft(Ball Screw) pitch
move distance per revolution= 5mm
b) Motor Encoder ppr ( Pulse per revolution) =
2000pulses
2. Move distance per one pulse of move Command.
Moving Distance of 1 Pulse Command =1 μ m
3. Calculation of the Electronic Gear Ratio:
5000
8000
/ 1 / 5
4 / 2000
Ration Gear Electronic




pulse um rev mm
rev pulse
4. Set the parameter of Electronic Gear Ratio:
Numerator of Electronic Gear Ratio = 8000
Denominator of Electronic Gear Ratio = 5000
Mechanical Disc
Load Shaft Deceleration Ratio-1/5
Servo Motor
Pulse Value of Rotating for Encoder
= 2500pulse/rev
1. Main positioning specifications:
a) Deceleration Ratio=1/5
b) Load Shaft(Mechanical Disc)Move Value per one
revolution=360
ﾟ
Motor Encoder ppr ( Pulse per revolution)= 2500 pulses
2. Move distance per one pulse of move Command.
Distance for 1Pulse Command =0.1
ﾟ
3. Calculation of the Electronic Gear Ratio:
3600
50000
1
5
/ 1 . 0 360
4 / 2500
Ratio Gear Electronic
 
  


pulse
rev pulse
4. Set the parameter of Electronic Gear Ratio:
Numerator of Electronic Gear Ratio = 50000
Denominator of Electronic Gear Ratio =3600
Transmission Belt
1. Main positioning specifications:
a) Deceleration Ratio=1/8
b) Load Shaft ( Idler)
Move Value per revolution.
mm 314 mm 100 3.14
  
c) Motor encoder ppr ( Pulse Per Revolution) =
8192pulse
2. Move distance per pulse of move Command.
Distance for 1Pulse Command =10 μ m
3. Calculation the Electronic Gear Ratio:
31400
262144
1
8
/ 10 314
4 / 8192
Ratio Gear Electronic
 



pulse um mm
rev pulse
4. Set the parameter of Electronic Gear Ratio:
Reduction of the fraction to make the Numerator and
Denominator less than 50000.
Numerator of Electronic Gear Ratio
32768
Denominator of Electronic Gear Ratio
3925