125
In
cr
ease cooling f
an lif
e
244
Cooling fan operation
selection
1
1
0
Operates at power on
Cooling fan on/off control invalid (The cooling fan is
always on at power on)
1
Cooling fan on/off control valid
The fan is normally on during inverter operation. The
fan switches on/off according to the temperature
during a stop of the inverter whose status is
monitored.
S
lip
com
p
ensat
ion
245
Rated slip
0.01%
9999
0 to 50%
Used to set the rated motor slip.
9999
No slip compensation
246
Slip compensation time
constant
0.01s
0.5s
0.01 to 10s
Used to set the response time of slip compensation.
When the value is made smaller, response will be
faster. However, as load inertia is greater, a
regenerative overvoltage (E.OV
) error is more
liable to occur.
247
Constant-power range slip
compensation selection
1
9999
0
Slip compensation is not made in the constant power
range (frequency range above the frequency set in
Pr. 3
)
9999
Slip compensation is made in the constant power
range.
S
e
le
ct
ion of
mot
o
r
st
opping met
hod
250
Stop selection
0.1s
9999
0 to 100s
The motor is coasted to a
stop when the preset time
elapses after the start
signal is turned OFF.
STF signal:
Forward rotation start
STR signal:
Reverse rotation start
1000 to
1100s
The motor is coasted to a
stop (
Pr. 250
- 1000)s after
the start signal is turned
OFF.
STF signal: Start signal
STR signal: Forward/
reverse signal
9999
When the start signal is
turned OFF, the motor
decelerates to stop.
STF signal:
Forward rotation start
STR signal:
Reverse rotation start
8888
STF signal: Start signal
STR signal: Forward/
reverse signal
Input
/out
put
phase
fa
ilure prot
ect
ion
sel
e
ct
io
n
251
Output phase loss
protection selection
1
1
0
Without output phase failure protection
1
With output phase failure protection
872
Input phase loss protection
selection
1
1
0
Without input phase failure protection
1
With input phase failure protection
—
252, 253
Refer to
Pr. 73
.
Display
of
t
he lif
e
of
t
he inver
ter
pa
rt
s
255
Life alarm status display
1
0
(0 to 15)
Displays whether the control circuit capacitor, main
circuit capacitor, cooling fan, and each parts of the
inrush current limit circuit has reached the life alarm
output level or not. Reading only
256
Inrush current limit circuit
life display
1%
100%
(0 to 100%)
Displays the deterioration degree of the inrush
current limit circuit. Reading only
257
Control circuit capacitor life
display
1%
100%
(0 to 100%)
Displays the deterioration degree of the control circuit
capacitor. Reading only
258
Main circuit capacitor life
display
1%
100%
(0 to 100%)
Displays the deterioration degree of the main circuit
capacitor. Reading only
The value measured by
Pr. 259
is displayed.
259
Main circuit capacitor life
measuring
1
0
0, 1
Setting "1" and turning the power supply off starts the
measurement of the main circuit capacitor life.
When the
Pr.259
value is "3" after powering on again,
the measuring is completed. Read the deterioration
degree in
Pr.258
.
Func
tio
n
Parameter
Name
Incre
ments
Initial
Value
Range
Description
Re
la
te
d
p
ara
m
e
te
rs
V/FV
/
F
V/F
