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Pr.
Name
Current average value monitor signal
557
output reference current
870
Speed detection hysteresis
Regeneration avoidance compensation
885
frequency limit value
Energy saving monitor reference (motor
893
capacity)
C24
Frequency setting voltage gain frequency
(923)
(built-in potentiometer)
* When Pr.80 Motor capacity "9999," the Pr.80 Motor capacity setting is not changed by IPM parameter initialization. IPM parameter initialization is performed by
setting Pr.998 IPM parameter initialization or the parameter setting mode on the operation panel.
....Specifications differ according to the date assembled. Refer to page 346 to check the SERIAL number.
REMARKS
When initialization of the IPM driving parameters is performed using rotations per minute (Pr. 998 = "1 or 12"),
increments of the other parameters, which are not listed in the above table, also change to rotations per minute. In
addition, the increments of monitor displays change from frequency to rotations per minute for all monitored items.
The Pr. 998 setting automatically changes the Pr. 71 setting but does not change Pr. 0 Torque boost and Pr. 12 DC injection
brake operation voltage settings. (Refer to page 123)
[IPM motor specification list]
Rated motor frequency
(rotations per minute)
Maximum motor frequency
(rotations per minute)
Minimum frequency
(rotations per minute)
(3)
IPM motor control dedicated parameter
The following parameters are activated only under IPM motor control.
See the reference pages for details.
Parameter
number
Acceleration time in low-speed
791
range
Deceleration time in low-speed
792
range
800
Control method selection
820
Speed control P gain 1
821
Speed control integral time 1
Parameters referred to
Pr. 0 Torque boost
Pr. 12 DC injection brake operation voltage
General-
purpose
motor
Pr.998
(Initial setting)
inverter current
Rated inverter
capacity
MM-EF
90Hz
(1800r/min)
135Hz
(2700r/min)
9Hz
(180r/min)
Name
Acceleration time in the low-speed range ("rated motor frequency/10" or
lower) is set.
Deceleration time in the low-speed range ("rated motor frequency/10" or
lower) is set.
IPM motor test operation is selected.
The proportional gain during speed control is set. (Setting this parameter
higher improves the trackability for speed command changes. It also reduces
the speed fluctuation due to a load fluctuation.)
The integral time during speed control is set. (Setting this parameter
shortens the return time to the original speed when the speed fluctuates due
to a load fluctuation. )
Refer to page 92
Refer to page 129
IPM motor control <IPM>
Setting
IPM motor
(rotations per
minute)
0
1(MM-EF),
12(MM-EFS)
Rated
Rated motor current
10r/min
(Speed detection
0Hz
hysteresis rotations
per minute)
Minimum rotations
6Hz
per minute
Motor capacity (Pr.80)
Rated motor
60Hz
rotations per minute
MM-EFS
75Hz
(1500r/min)
112.5Hz
(2250r/min)
7.5Hz
(150r/min)
Description
IPM motor
Increment
(frequency)
101(MM-EF),
1,12
112(MM-EFS)
0.01A
0.5Hz
(Speed detection
1r/min
hysteresis
frequency)
Minimum frequency
1r/min
0.01kW
Rated motor
1r/min
frequency
0,101,
112
0.01Hz
0.01Hz
0.01Hz
4
Refer to
Page
113
113
88
90
90
87
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