System Of Units And Parameter Setting - Mitsubishi FX-1PG User Manual

FX-1PG/FX
5
5.2

System of Units and Parameter Setting

[ BFM #0 ] Pulse rate
A: 1 to 32, 767 P/R
This is the number of input pulses required by the
amplifier to rotate the motor by 1 revolution. It is not the
number of encoder pulses per revolution of the motor.
(The pulse rate becomes a different value in accordance
with the electronic gear ratio.)
The BFM#0 is not required to be set when the motor
system of units described later is selected.
[ BFMs #2 and #1 ] Feed rate
B1 (distance specification) = 1 to 999,999 µm/R
B2 (angle specification)
B3 (distance specification) = 1 to 999,999 x10
This is the machine travel B while the motor rotates by
1 revolution. Set either one among B1, B2 and B3 in
accordance with the unit among µm/R, mdeg/R and
10-4inch/R suitable to the application.
The BFMs #2 and #1 are not required to be set when
the motor system of units described later is selected.
[ BFM #3 ] Parameters (b0 to b15)
Set bits 0 to 15 as follows.
-1PG PULSE GENERATOR UNIT
2N
= 1 to 999,999 mdeg/R
-4
inch/R
➀
System of units (b1, b0)
b1 b0 System of units
0 0 Motor system
0 1 Machine system
1 0
*1
Combined
system
1 1
*1
*1 Offers the same operation.
The table below shows the units for position and speed
in accordance with the setting of the BFMs #2 and #1
(feedrate).
Selection Motor
of feedrate system
B1
Position
B2
data*2
B3
B1
Speed
B2
data*3
B3
*2 Position data: HP, P(I), P(II), CP
*3 Speed data:
BFM LIST
Remarks
Units based on pulses
Units based on lengths and
angles
Units based on lengths and
angles for position units based
on Hz for speed
Combined Machine
system system
µm
PLS
PLS mdeg
-4
PLS 10 inch
Hz cm/min
Hz 10deg/min
Hz inch/min
V , V , V , V , V(I), V(II)
max bia JOG RT
5-3