LSIS XBF-PN04B, User Manual, Page: 48 / 820

Chapter 4 Positioning Parameter & Operation Data
4-3
4.2.2 Basic parameter setting
(1) Unit
(a) You can set the command unit for positioning control according to control object. The command unit (mm,
inch, pulse, degree) can be set for each axis separately.
(b) In case of changing the unit setting, as the value of other parameter and operation data does not change,
the value of parameter or operation data should be set within the setting range of the unit to be changed.
Ex) mm, inch, pulse : X-Y Table, Conveyor
degree : a body of rotation (360degree/rotation)
(2) Pulse per Rotation
(a) Only in case of using mm, inch, degree as a positioning command unit, you should set pulse per rotation
(b)
If the value does not correspond with parameter value of servo drive, command and m otor
action can be different.
Travel per pulse = Transfer per rotation (Al) / Pulse per rotation (Ap)
(3) Travel per rotation and unit multiplier
(a) Only in case of using mm, inch, degree as a positioning command unit, you should set travel per rotation
and multiplier
(b) Machine’s travel per rotation of motor is determined by the structure of machine.
If the lead of ball screw (mm/rev) is PB and the rate of deceleration is 1/n,
Transfer amount per rotation (AL) = PB ×1/n
.
(c) Settable Travel per rotation (AI) is listed below
In case transfer amount AL exceeds the above range, the travel per rotation (AI) should be set as follows:
Transfer amount (AL) = PB ×1/n
= Travel per rotation (AI) × Unit multiplier (Am)
Remark)
In case unit is mm, unit multiplier (Am) is 1,10,100,1000. If the value of “ PB ×1/n” exceeds
20000000.0
㎛
, it is required to adjust the unit multiplier so that the travel per rotation (Al) does not exceed
20000000.0
㎛
.
Ex1) In case that (AL)
= PB ×1/n = 2500000.0
㎛
(= 2500
㎜
),
(AL) = (Al) × (Am) = 25000000 ×1
Setting unit mm Inch degree
Travel per rotation
0.1 ~
20000000.0 um 0.00001 ~ 2000.00000 inch
0.00001 ~ 2000.00000
degree