Chapter 6 Control Mode of Operation ASDA-A2R Series6-8 Revision December, 20146.2.5 Electronic Gear RatioRelated parameters: Please refer to Chapter 8 for further informationParameter Abbr. FunctionP1-44 GR1 Gear Ratio (Numberator) (N1)P1-45 GR2 Gear Ratio (Denominator) (M)Electronic gear provides simple ratio change of travel distance. The high electronic gearratio would cause the position command to be the stepped command. S-curve orlow-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 ischanged to 0.5, then every two pulses from the command will be refer to one PUU ofmotor encoder.For example (rotary motor): after setting the electronic gear ratio properly, the movingdistance of the object is 1μm/pulse, which is easier to use.Gear Ratio Moving distance of each pulse commandElectronic gear isunapplied. 11 m1000030002500410003Eectronic gear isapplied. 300010000 m1Ball ScrewPitch: 3 mmWL: Working LoadWT: Working TableMotor (Encoder resolution: A/B, Z)Encoder: 1280000 pulse/rev
