p2izz&q
1.3.7 The motor overshoots in speed or hunts.
Item
Cause Check Remedy
The speed loop gain
0
Check that the speed loop
0
Set both the parameter
parameter is incorrectly
proportional gain
(VKP)
and
values to the standard
set.
speed loop differentiation
values.
gain
(VKI)
are set to 63 and
60 as their standard values,
respectively.
1
o
Amplifier parameter No:
136
and X37.
o
NC parameter:
#22(PRJ,#23(PR)
. . .
9" CRT screen
NC parameter:
#54(PR),#55(PR)
14"
CRT screen
(See'
References 1.2.2 and
1.2.3.)
The speed loop gain is
o
Set the parameters VKP and
0
Set both the parameters so
too high.
VKI to low values and check that they are nearly the
that the motor does not hunt
same low values.
or overshoot.
2
0
For the amplifier parameters:
see Reference
1.2.2(2).
0
For the NC parameters, see
Reference
1.2.3(3).
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46
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