Instruction manual
7.
ADJUSTMENT
7.4 Manual Gain Adjustment
On some maches, gain adjustment may not be made by auto
tuning
or
excellent gain setting may not be
made
if
gain adjustment is performed by auto tuning.
In
ths case, adjust the gains manually.
Use
any
of
the methods given
in
ths
section
to
adjust the gains.
7.4.1 When machine rigidity
is
low
(1)
Machine condition
Because
of
low machme rigidity, the response setting
of
auto tuning
is
set
to
slow response and it takes
too
much time
to
reach the target position.
When the machme or motor shaft
is
moved lightly
at
a
stop, it moves easily.
(2)
Adjustment procedure
(a) Adjustment
1
1)
Execute auto tuning with the response setting
of
the level
at
whch machme will not vibrate.
Set
0101
in
parameter
No.
2.
2)
Set "Not executed' auto tuning
in
parameter
No.
2.
3)
Gradually decrease the speed
integral
compensation
VIC
(parameter
No.
38)
setting.
(b) Adjustment
2
1)Perform auto tuning with the response setting
of
slow response.
Set
0101
in
parameter No. 2.
2)Set the machine resonance suppression ater (Parameter
No.
22)
in
order from hgher to lower
3)Alternate a
start
and a stop several times, execute auto tuning, and check whether the machine
4)If
the machne condition does not become excellent after the above adjustment, reduce the setting
frequencies.
does not vibrate.
of
speed integral compensation as
in
Adjustment
1.
7-
6
-.
.