— 8-14 —
8.4. Setting Filters (Tuning Level 2)
l The Motor may resonate mechanically and generate a noise of certain frequency when positioning.
The noise may be reduced using a software of “low-pass filters” (parameter FP and FS) provided
with the Megatorque Motor System. The unit of FP and FS is cycle / second (HZ).
◊ If low frequency less than 100 HZ is set to parameters “FP” and “FS,” hunting or unstable
positioning may occur.
l Before using filters, make sure that all adjustments of gain (VG) and integrator frequency (VI) are
completed.
l Use the same demonstration program (SA/AJ) for adjusting filters. Follow the procedures 1) ~ 7) in
“8.2.4. Trial Running (Tuning Level 1)”.
l When the system is used under the Torque or Velocity control mode, input the command from the
external controller.
1) Start “FP” adjusting program.
[+],[-],[ENT]
444( 333)
STEP10
P /F J
ENT
A
The message is displayed as shown above. Press plus (+) or minus (key) to change “FP” value.
(The display shown above is an example. Those values shall be set to the conditions for actual use.)
l Explanation of the messages
(1) Key function
and
-
+
SHIFT
: Pressing key one time increases 10 resolution of “FP”.
-
+
: Pressing key one time decreases 10 resolution of “FP”.
ENT
: Store “FP” value in the memory and completes the
adjustment.
(2) Indicates present “FP” value.
(3) Indicates “FP” value changed by pressing plus (+) or minus (-) key.
(4) Response index number: The lower number denotes better response.
(5) Positioning index number: The lower number denotes quicker positioning.
Caution : Changing “FP” 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.)
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