is used for ball screw drive 42 Position control mode (Page 49 / 102) Maxsine EP100 AC SERVO User Manual

1. Electronic gear is used for ball screw drive

4.2 Position control mode

The ball bearing screw load has

Electronic gear ratio( N ) = Pt

M Pc × R

Here,

P c

Pitch

ΔP

For example:

Known the encoder line number C=2500 line, the reducer gear ratio 1/1, pitches Pitch=8mm, a pulse travel

equivalent ΔP=0.001mm. Calculate the electronic gear ratio.

Calculation step:

z Calculate the resolution of the encoder (Pt)

Pt = 4 × C = 4 × 2500 = 10000( pulse / rev)

z Calculate the command pulse numbers for one turn of the load shaft (ball-screw) (Pc)

Pitch

ΔP

8mm

0.001mm

8000

z Calculate the electronic gear ratio.

Electronic gear ratio( N ) = Pt = 10000 = 5

M Pc × R 8000 × (1/1) 4

z Set parameters (By first numerator as an example)

Numerator N=5，denominator M=4，set P029=5 and P030=4.