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(5) Moter failes to
run smoothly.
Lighten the load or
Ing accelerat~on or
lengthen the setting
decelerat~on?
of accelerat~on/decel-
eratlon tlme.
t
Are output voltages
I
Does output voltage
fluctuate?
across U and
v,-v
Yes
Fa~lure of
and
W,
and Wand
U
unbalanced7
inverter
Yes
Does load fluctuate?
Serv~ce l ~ f e of capacl-
1
; : : r s 7' n veF
used for
5
to been
10
lyes
- ( t o r
for
s m o o t h t n 9
converter output
VOI-
tage has exp~red.
Yes
Min~mize load fluctuat~on.
t
No
Inverter
No
Is there backlash In
gear, cha~n, etc.?
Note 6: Motor is accelerated or decelerated
~rregularly by stall prevent~on func-
t~on.
Yes
Improve mechan~cal system.
N
0
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