Delta CT2000 Series User Manual page 369

Chapter 12 Description of Parameter SettingsCT2000 Series
 Pr00-11=6 PM Sensorless (I/F + FOC)
Flow chart of speed estimator performance adjustment
De creas e t he s ystem
in ertia(11-01)/
De creas e A SR1 low-speed
bandwich(11-03)
Current v ibrates extremely or oc
during the swi tc hing proc ess
I ncreas e the e stimat ed
width(10 -3 2)/
Inc rease the s ys tem
inertia(11-01)
Output frequency wav es or
dis per ses s ubs tantially
I ncrease th e es timated width (1 0-32)/
I ncrease th e wave carrier freq uency
(00-17)
Mo tor lo ses sp ee d o n
Freque ncy command s ett in g
(Hi gh er t ha n swi tchi ng f re qu en cy)
Sta rt running
Running sta bly
until up above the
s witc hing fre quenc y
Running on high
frequen cy, the out put frequency
is st able or no t
No
Reac h t he h igh est
ou tput frequenc y or not
h ig h sp ee d
Tes t wit h load
12.2-00-7
Inc rease the current
command in lo w-speed
area of PM mot or(1 0-31)
In creas e th e es timated
width(10 32 )
In creas e th e switc hing
point (10 39)
H as output frequency but the
m otor is s tal led
Yes
Dec reas e th e estimated
widt h(10-32)/
Decrea se the syst em
inertia(11-01 )
High frequency s pur on output
frequency
Yes
Yes
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