ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 245)

Example of simple jogging:
Begin with the command sequence
JV=3000; BG
The position reference starts to accelerate until the jog speed reaches 3000. Later, the
command sequence
JV=1500; BG
changes the speed of the position reference to 1500
counts/second.
0 0.02 0.04 0.06 0.08
0
1000
2000
3000
0 0.02 0.04 0.06 0.08
0
50
100
150
Time (sec)
P osition reference
C ounts/sec
A C
D C
JV =1500
JV =3000
Time (sec)
Example of on-the-fly mode switching:
Begin with the command sequence:
AC=100,000; DC=200,000; PA=100; BG;
A PTP motion begins, during which the drive brings the reference position to the position
target. At the time of 0.055 seconds (where the plot of the position target terminates in the
following figure), the command
JV=-2000; BG;
is entered. The drive uses the AC
acceleration to reach the desired speed. If, at the time of the
BG
, the speed of the position
reference is more negative than -2000 the drive will use the DC parameter instead of AC.
0 0.1 0.2 0.3 0.4
-2000
0
2000
4000
0 0.05 0.1 0.15 0.2 0.25
-200
-100
0
100
Time (sec)
Time (sec)
P osition reference
P osition Target
C ounts/sec
C ounts
SimplIQ for Steppers Application Note The Position Reference Generator
MAN-STECR (Ver. 1.1)
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