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Pr.29
.The
acceleration/deceleration
pattern can
be selected according to t h e epplicetin.
o
( h r accekratiod'decderotion
p a w )
I
Thi s
is
the
general acceleratioddecelertion panem and
t h e
motor
b
usually operated with this setting.
i
p*
g h
..........
a
rm
M n g :
1
(S-pattem
A ) ]
This pattem
is used
for the apphcatiw which require quick
acceleration or deceleration in the high speed range (over
WHz).
In
this
pattern,
W (base
frequency) is taken
as the point
of
g f I
f
*
inHeUion. Using
t h k
pattern,
it is
p o m e
to
set ths
accekrtioddeceleration time which
Ms the
motor
toque
reduction
in the constant Hf output operation range over
WHz.
llw
pattern is
applicable to controlling
the
spindle speed of
machine tools.
b
...
I
nim
Mote:
For
the
value
to be
set, use the time necessary lor acceleration up to
the
base lrequency
W
The actual acceleration time 11' seconds
beyond
the
base
frequency "W
is calculated by
the
(Pr.3) instead
of
the
acceleratiorddeceleratim
rderence lrequency (Pr.20).
following formula.
Setting: 2 (S-pattern
B)
I
Acceleratiorddeceieration
is atways controlled in S-pattem withtn
the range
of
72' (current Irequency) to
"ll'
(target frequency).
Therefore, shock during acceleration and decelration is minimized
and this control can be used to prevent
loads
from being toppled
over.
r-
Note: Even if this parameter is written during operation,
it
will be validated after the inverter
is StODDed.
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