Mitsubishi FR-A800

(C) Motor constant parameters
PARAMETERS
441
5
GROUP
C
SF-PR heavy duty setting
• When the SF-PR motor is selected (Pr.71="70, 73, 74"), the SF-PR heavy duty setting can be selected by setting Pr.81
Number of motor poles according to the number of the SF-PR motor poles.
• When the SF-PR heavy duty setting is selected, the Pr.0 Torque boost setting is automatically changed to enable output of
the 6 Hz 150% torque under V/F control.
NOTE
• When using the SF-PR heavy duty setting, set Pr.14 Load pattern selection = "0" (initial value).
• When the Pr.0 setting is changed from its initial value, the automatic change is not performed.
Automatic change of Pr.0 Torque boost and Pr.12 DC injection brake
operation voltage
• When initial values are set in Pr.0 and Pr.12, the Pr.0 and Pr.12 settings are automatically changed to the values in the
table below by changing the Pr.71 setting.
 When changed to Pr.71 = "0, 2 to 6, 20, 23, 24, 40, 43, or 44" (standard motor)
 When changed to Pr.71 = "1, 13 to 16, 50, 53, or 54" (constant-torque motor)
 When changed to Pr.71 = "70, 73, or 74" (SF-PR)
NOTE
• When the Pr.0 and Pr.12 settings are changed from their initial values, the automatic change is not performed.
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Parameters referred to
Pr.0 Torque boost page 597
Pr.12 DC injection brake operation voltage page 605
Pr.14 Load pattern selection page 600
Pr.96 Auto tuning setting/status page 442
Pr.100 to Pr.109 (Adjustable 5 points V/F) page 603
Pr.178 to Pr.189 (input terminal function selection) page 430
Pr.684 Tuning data unit switchover page 442
Pr.800 Control method selection page 164
Inverter Pr.0 value (%) after automatic change
Pr.12 value (%) after
automatic change
FR-A820-[] FR-A840-[]
Standard
motor

Constant-
torque
motor

SF-PR 
Standard
motor

Constant
-torque
motor

SF-PR

Heavy duty setting
Light duty
setting
SLD
/LD
ND/
HD
SLD
/LD
ND/
HD
Pr.81
=2
Pr.81
=4
Pr.81
=6
Pr.81
2,4,6
00046(0.4K) 00023(0.4K) 6 6 4444 4 4 4
00077(0.75K) 00038(0.75K) 6 6 7.4 6 6.4 4 4 4 4
00105(1.5K) 00052(1.5K) 4 4 5.8 5 3.7 3 4 4 2.5
00167(2.2K) 00083(2.2K) 4 4 6 4.5 3.3 2.5 4 4 2.5
00250(3.7K) 00126(3.7K) 4 4 6.4 4.5 4.2 2.5 4 4 2.5
00340(5.5K) 00170(5.5K) 3 2 4.5 3.7 3.3 2 4 2 2
00490(7.5K) 00250(7.5K) 3 2 4.4 4.5 3.8 2 4 2 2
00630(11K) 00310(11K) 2 2 3.5 3.3 3.5 1.5 2 2 1.5
00770(15K) 00380(15K) 2 2 4.5 3 3.5 1.5 2 2 1.5
00930(18.5K) 00470(18.5K) 2 2 4 3.2 3 1.5 2 2 1.5
01250(22K) 00620(22K) 2 2 2.5 3.4 3 1.5 2 2 1
01540(30K) 00770(30K) 2 2 3 2 2.5 1 2 2 1
01870(37K) 00930(37K) 2 2 2 2.5 2.6 1 2 2 1
02330(45K) 01160(45K) 1.5 2 1.5 2 2 2 2.4 1 2 2 1
03160(55K) 01800(55K) 1.5 2 1.5 2 2 2 0.7 0.7 2 2 1
03800(75K)
or higher
02160(75K)
or higher
1 1 1111 1 1 1
Caution
 Make sure to set this parameter correctly according to the motor used. Incorrect setting may cause
the motor and inverter to overheat and burn.