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5.5. Setting Filters (Tuning Level 2)
Setting the Low-pass filters (parameters FP and FS) will decrease resonant noise level. The
parameters FP and FS describe the cut-off frequency of low-pass filters in [Hz].
◊ Firstly, set the parameter FP to FP200 if the System vibrates and/or generates resonant
noise after the servo loop gains were properly set.
◊ If the parameters FP and FS are set too low, the servomechanism may become unstable,
thus resulting in the Motor hunting or adverse effect on positioning.
Operate the Motor by the demonstration program (SP/AJ) for setting the low-pass filters. Follow
the procedures 1) to 8) described in “5.2.4. Trial Running (Tuning level 1).”
5.5.1. Setting Low-pass Filter
Firstly start minor adjustment of the parameter FP (Primary low-pass filter).
1) Input as Parameter code + /AJ.
The screen changes as shown below, and you can change the FP value by the input of
the keys ＋
and － .
>
:>
FP/AJ
STEP 10
FP 0 _
P / F J
ENT
A
Current setting
Increment/decrement of the FP value for an input of
＋
or
－
key
！
Caution : • An input of the keys SHIFT + .
=
will alter the increment or the
decrement of an input of the (+) and (–) keys to 10 times of the
current setting.
◊ Be careful for the motor vibration because this will make sudden
change of the FP value.
• An input of the
.
=
key will alter the increment or the decrement of
an input of the (+) and (–) keys to 1/10 of the current setting.
2) Input the ＋
key. The cut-off frequency will be temporally set to 1 kHz.
>
:>
FP/AJ
STEP 10
FP 1000 _
Pressing
SHIFT
-
+
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