121
Increase co
oling
fan life
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.
Slip compensation
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.
Selection
of motor
sto
pping
method
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/ou
tput phase
fa
ilure pr
otection
sel
ection
251
Output phase
failure protection
selection
1
1
0
Without output phase failure protection
{
{
{
1
With output phase failure protection
872
Input phase failure
protection selection
1
1
0
Without input phase failure protection
{
{
{
1
With input phase failure protection
—
252, 253
Refer to
Pr. 73
.
Fu
nc
tio
n
Parameter
Name
Incre
ments
Initial
Value
Range
Description
Para
meter
copy
Param
eter
clear
All
param
eter
clear
Re
la
te
d
p
a
ra
mete
rs
{
: enabled
×
: disabled
V/FV
/
F
V/F
Содержание FR-A741-11K
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