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Parameter
Name
Cooling fan operation
244
selection
245
Rated slip
Slip compensation time
246
constant
Constant-power range slip
247
compensation selection
250
Stop selection
Output phase loss
251
protection selection
Input phase loss protection
872
selection
252, 253
Refer to Pr. 73.
—
255
Life alarm status display
Inrush current limit circuit
256
life display
Control circuit capacitor life
257
display
Main circuit capacitor life
258
display
Main circuit capacitor life
259
measuring
Incre
Initial
Range
ments
Value
Operates at power on
0
Cooling fan on/off control invalid (The cooling fan is
always on at power on)
Cooling fan on/off control valid
1
1
The fan is normally on during inverter operation. The
1
fan switches on/off according to the temperature
during a stop of the inverter whose status is
monitored.
0 to 50%
Used to set the rated motor slip.
0.01%
9999
9999
No slip compensation
Used to set the response time of slip compensation.
When the value is made smaller, response will be
0.01s
0.5s
0.01 to 10s
faster. However, as load inertia is greater, a
regenerative overvoltage (E.OV ) error is more
liable to occur.
Slip compensation is not made in the constant power
0
range (frequency range above the frequency set in
1
9999
Pr. 3)
Slip compensation is made in the constant power
9999
range.
The motor is coasted to a
stop when the preset time
0 to 100s
elapses after the start
signal is turned OFF.
The motor is coasted to a
1000 to
stop (Pr. 250 - 1000)s after
1100s
the start signal is turned
OFF.
0.1s
9999
9999
When the start signal is
turned OFF, the motor
decelerates to stop.
8888
0
Without output phase failure protection
1
1
1
With output phase failure protection
0
Without input phase failure protection
1
1
1
With input phase failure protection
Displays whether the control circuit capacitor, main
circuit capacitor, cooling fan, and each parts of the
1
0
(0 to 15)
inrush current limit circuit has reached the life alarm
output level or not. Reading only
Displays the deterioration degree of the inrush
1%
100%
(0 to 100%)
current limit circuit. Reading only
Displays the deterioration degree of the control circuit
1%
100%
(0 to 100%)
capacitor. Reading only
Displays the deterioration degree of the main circuit
1%
100%
(0 to 100%)
capacitor. Reading only
The value measured by Pr. 259 is displayed.
Setting "1" and turning the power supply off starts the
measurement of the main circuit capacitor life.
1
0
0, 1
When the Pr.259 value is "3" after powering on again,
the measuring is completed. Read the deterioration
degree in Pr.258.
Parameter List
Description
STF signal:
Forward rotation start
STR signal:
Reverse rotation start
STF signal: Start signal
STR signal: Forward/
reverse signal
STF signal:
Forward rotation start
STR signal:
Reverse rotation start
STF signal: Start signal
STR signal: Forward/
reverse signal
125
4
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