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Initializing the parameters required to drive
an IPM motor (Pr.998) <IPM>
(2) IPM parameter initialization list
By selecting IPM motor control from the parameter setting mode or with Pr.998 IPM parameter initialization, the
parameter settings in the following table change to the settings required to drive an IPM motor. The changed settings
differ according to the IPM motor specification (capacity). Refer to the IPM motor specification list shown below.
Performing parameter clear or all parameter clear sets back the parameter settings to the settings required to drive a
general-purpose motor.
*1 This parameter can be set when FR-A7NL is mounted.
*2 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.
*3 Initial values differ according to the inverter capacity. (55K or lower/75K or higher)
Parameter
Setting
Setting increments
Name
General-
purpose
motor
IPM motor (rotations
per minute)
IPM motor
(frequency)
Pr.998
0
(Initial
setting)
1 (MM-EF),
12 (MM-EFS)
101 (MM-EF),
112 (MM-EFS)
1, 12 0, 101, 112
1
Maximum frequency 120/60Hz *3
Maximum motor
rotations per minute
Maximum motor
frequency
1r/min 0.01Hz
4
Multi-speed setting (high speed) 60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
9
Electronic thermal O/L relay
Rated inverter
current
Rated motor current 0.01A/0.1A *3
13
Starting frequency 0.5Hz
Minimum rotations per
minute
Minimum frequency 1r/min 0.01Hz
15
Jog frequency 5Hz
Minimum rotations per
minute
Minimum frequency 1r/min 0.01Hz
18
High speed maximum frequency 120/60Hz *3
Maximum motor
rotations per minute
Maximum motor
frequency
1r/min 0.01Hz
20
Acceleration/deceleration
reference frequency
60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
22
Stall prevention operation level 120% Short-time motor torque 0.1%
37
Speed display 0 0 1
55
Frequency monitoring reference 60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
56
Current monitoring reference
Rated inverter
current
Rated motor current 0.01A/0.1A *3
71
Applied motor 0
120 (when Pr.998 = "1 or 101")
210 (when Pr.998 = "12 or 112")
1
80
Motor capacity 9999 Inverter capacity *2 0.01kW/0.1kW *3
125
(903)
Terminal 2 frequency setting
gain frequency
60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
126
(905)
Terminal 4 frequency setting
gain frequency
60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
144
Speed setting switchover 4
Number of motor poles +
100
Number of motor poles 1
240
Soft-PWM operation selection 1 0 1
260
PWM frequency automatic
switchover
11 1
263
Subtraction starting frequency 60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
266
Power failure deceleration time
switchover frequency
60Hz
Rated motor rotations
per minute
Rated motor frequency 1r/min 0.01Hz
390 *1
% setting reference frequency 60Hz Rated motor frequency 0.01Hz
505
Speed setting reference 60Hz Rated motor frequency 0.01Hz
557
Current average value monitor
signal output reference current
Rated inverter
current
Rated motor current 0.01A/0.1A
*3
870
Speed detection hysteresis 0Hz
Speed detection
hysteresis rotations per
minute
Speed detection
hysteresis frequency
1r/min 0.01Hz
885
Regeneration avoidance
compensation frequency limit value
6Hz
Minimum rotations per
minute
Minimum frequency 1r/min 0.01Hz
893
Energy saving monitor reference
(motor capacity)
Rated inverter
capacity
Motor capacity (Pr. 80) 0.01kW/0.1kW
*3
REMARKS
If IPM parameter initialization is performed in rotations per minute (Pr. 998 = "1" or "12"), the parameters not listed in the table
above are also set and displayed in rotations per minute.