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) = 1 to 999,999 mdeg/R
B3 (distance specification) = 1 to 999,999 x10
-4
inch/R
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.
➀
System of units (b1, b0)
b1 b0 System of units Remarks
0 0 Motor system Units based on pulses
0 1 Machine system
Units based on lengths and
angles
10
Combined
system
Units based on lengths and
angles for position units based
on Hz for speed
11
*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
of feedrate
Motor
system
Combined
system
Machine
system
Position
data*2
B1 PLS
µm
B2 PLS mdeg
B3 PLS 10
-4
inch
Speed
data*3
B1 Hz cm/min
B2 Hz 10deg/min
B3 Hz inch/min
*2 Position data: HP, P(I), P(II), CP
*3 Speed data: V
max
,V
bia
, V
JOG
, V
RT
, V(I), V(II)
*1
*1
5
FX-1PG/FX
2N
-1PG PULSE GENERATOR UNIT BFM LIST
5-3
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