— 8-12 —
8.3.3. Adjustment of Velocity Integrator Frequency (VI)
l
The adjustment of velocity integrator frequency (VI) shall be conducted after the velocity gain
(VG) is adjusted.
1)
Start “VI” adjusting program.
[+],[-],[ENT]
444( 333)
STEP1
_VI1
I
/
V
J
ENT
A
(1)
(5)
(2)
(3)
(4)
The messages are shown on the left.
Inputting the plus (+) or minus (-) key
changes “VI” value.
(The “VI” value varries with an actual
load inertia and revolution speed.)
l
Explanation of the messages
(1)
Key function
and
-
+
SHIFT
: Pressing key one time increases 1 resolution of “VI.”
-
+
: Pressing key one time decreases 1 resolution of “VI.”
ENT
: Store “VI” value in the memory and completes the
adjustment.
(2)
Indicates present “VI” value.
(3)
Indicates “VI” value changed by pressing plus (+) or minus (-) key.
(4)
Response index number: The lower number denotes better response.
(5)
Positioning index number: The rower number denotes quicker positioning.
Note : Changing “VI” step ((3)).
If you want to change the resolution of step, press space key or back space key.
Space key
: Changes the step to 1/10 of present resolution.
(Pressing twice makes 1/100.)
Back space key : Changes the step to 10 times of present resolution.
(Pressing twice makes 100 times.)
2)
Observing the Motor operation, press the plus (+) key several times.
[+],[-],[ENT]
333( 222)
STEP1
_VI3
Pressing
,
SHIFT
-
+
-
+
• • •
As the responce index decreases, the movement of the Motor is getting crisply.
3)
Keep pressing the plus (+) key, till the Motor starts hunting and stops.
[+],[-],[ENT]
233( 123)
STEP1
_VI5
Pressing
,
SHIFT
-
+
-
+
• • •
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