Electronic Gear Ratio - Delta ASD-A2R-0221 Series User Manual

Chapter 6 Control Mode of Operation ASDA-A2R Series

6.2.5 Electronic Gear Ratio

Related parameters: Please refer to Chapter 8 for further information
Parameter Abbr.
P1-44
P1-45
Electronic gear provides simple ratio change of travel distance. The high electronic gear
ratio would cause the position command to be the stepped command. S-curve or
low-pass filter can be used to improve the situation. When electronic gear ratio is set to 1,
the motor will turn one cycle for every 1280000PUU. When electronic gear ratio is
changed to 0.5, then every two pulses from the command will be refer to one PUU of
motor encoder.
For example (rotary motor): after setting the electronic gear ratio properly, the moving
distance of the object is 1μm/pulse, which is easier to use.
Electronic gear is
unapplied.
Eectronic gear is
applied.
6-8
GR1 Gear Ratio (Numberator) (N1)
GR2 Gear Ratio (Denominator) (M)
Motor (Encoder resolution: A/B, Z)
Encoder: 1280000 pulse/rev
Gear Ratio
1

1
10000

3000
Function
WL: Working Load
WT: Working Table
Moving distance of each pulse command

3 1000 3000
 

4 2500 10000


1 m
Ball Screw
Pitch: 3 mm


m
Revision December, 2014