9 6
C H A N GE PARA METERS
6.7.7.6 SPEED PI A D APTIO N / Speed
l
oop adapt
i
on enab
l
e PIN 7 9
The X-ax
i
s
i
nterna
l
connect
i
on
i
s the speed error s
i
gna
l
.
The defau
l
t va
l
ues
i
n th
i
s SPEED PI A D APTIO N sub-menu are chosen as a start
i
ng po
i
nt.
The most frequent
l
y encountered requ
i
rement
i
s for the ga
i
n term of the speed
l
oop error amp
li
f
i
er to be h
i
gh
for
l
arge speed errors, and
l
o w for sma
ll
errors.
W hen the funct
i
on
i
s enab
l
ed the defau
l
t va
l
ues of prop ga
i
n are 5 for errors be
l
o w 1.0 0 % , and 1 5 for errors
above 2.0 0 % w
i
th a
li
near change from 5 to 1 5 bet w een 1.0 0 % and 2.0 0 % .
A decreas
i
ng ga
i
n w
i
th error
i
s a
l
so poss
i
b
l
e by choos
i
ng appropr
i
ate term va
l
ues
i
n th
i
s and the upper SPEED
C O N TROL menus.
Graph of adapt
i
on prof
il
e for
d
e
f
a
u
l
t v
a
l
u
e
s.
Not
e
. Th
e
d
e
f
a
u
l
t s
e
tt
i
ngs
a
r
e
d
e
s
i
gn
e
d to g
i
v
e
l
ow
e
r
g
a
i
n w
i
th
l
ow
e
rr
o
r
. Th
i
s p
r
ov
i
d
e
s smooth st
ea
dy st
a
t
e
p
e
r
fo
r
m
a
n
ce
. App
li
ca
t
i
ons th
a
t
r
e
qu
ir
e
p
r
ec
i
s
e
c
ont
r
o
l
a
t v
e
r
y
l
ow sp
ee
ds m
a
y fun
c
t
i
on b
e
tt
e
r
w
i
th th
e
a
d
a
pt
i
on d
i
s
a
b
l
e
d.
See a
l
so 6.1 0.8.1 Lo w speed performance
6.7.7.7 SPEED PI A D APTIO N / Us
i
ng sma
ll
speed
i
nputs
Some app
li
cat
i
ons ut
ili
se very sma
ll
speed
i
nputs e. g. pos
i
t
i
on
i
ng. In th
i
s case the defau
l
t sett
i
ngs for the
SPEED PI A D APTIO N may be unsu
i
tab
l
e. Th
i
s
i
s because they are des
i
gned to g
i
ve
l
o w ga
i
n for
l
o w errors
w h
i
ch prov
i
des smooth runn
i
ng at speed.
For sma
ll
i
nputs
i
t may be necessary to e
i
ther DIS A BLE the funct
i
on, or mod
i
fy the parameters to
prov
i
de h
i
gher ga
i
n for sma
ll
errors. See 6.1 0.8.1 Lo w speed performance.
SPEED PI A D APTIO N 4
7 9)SPD A D APT EN A BLE
7 9)SPD A D APT EN A BLE
EN A BLED
PAR A ME TER
RA N GE
DEF A ULT
PIN
SPD A D APT EN A BLE
EN A BLED or DIS A BLED
EN A BLED 7 9
Enab
l
es the mode that var
i
es
the terms bet w een break po
i
nts
Set
i
n T HIS MENU.
LO prop ga
i
n of 5
LO Int T C of 1.0 0 0
LO W BRE A K POIN T of 1. 0 0 %
HIG H BRE A K POIN T of 2.0 0 %
X ax
i
s
i
s speed error
Y ax
i
s
i
s P and I terms
Set
i
n UPPER MENU.
Speed Prop ga
i
n of 1 5
Speed Int T C of 1.0 0 0
Summary of Contents for PLX
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