Offline Auto Tuning - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

Inverter
FR-A820-[] FR-A840-[]
00046 (0.4K) 00023 (0.4K)
00077 (0.75K) 00038 (0.75K) 6
00105 (1.5K) 00052 (1.5K)
00167 (2.2K) 00083 (2.2K)
00250 (3.7K) 00126 (3.7K)
00340 (5.5K) 00170 (5.5K)
00490 (7.5K) 00250 (7.5K)
00630 (11K) 00310 (11K)
00770 (15K) 00380 (15K)
00930 (18.5K) 00470 (18.5K) 2
01250 (22K) 00620 (22K)
01540 (30K) 00770 (30K)
01870 (37K) 00930 (37K)
02330 (45K) 01160 (45K)
03160 (55K) 01800 (55K)
03800(75K) 02160(75K)
or higher or higher
*1 Pr.71 = "0, 2 to 6, 20, 23, 24, 40, 43, or 44" (standard motor)
*2 Pr.71 = "1, 13 to 16, 50, 53, or 54" (constant-torque motor)
*3 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.
• When the SF-PR motor is selected (Pr.71 = "70, 73, or 74"), the output current may become large due to a small load by setting
Pr.81 Number of motor poles according to the number of the SF-PR motor poles.
• When the SF-PR motor is used, the output current tends to increase compared with the case where the SF-JR or SF-HR motor
is used. Depending on the load conditions, the output current may increase even though the torque boost value has been
automatically changed. When the protective function such as the electronic thermal O/L relay (E.THT, E.THM) or stall
prevention (OL, E.OLT) is activated, adjust the Pr.0 Torque boost according to the load.
CAUTION
• Make sure to set this parameter correctly according to the motor used. Incorrect setting may cause the motor and the
inverter to overheat and burn.
Parameters referred to
Pr.0 Torque boostpage 672
Pr.12 DC injection brake operation
Pr.14 Load pattern selectionpage 674
Pr.96 Auto tuning setting/statuspage 509
Pr.100 to Pr.109 (Adjustable 5 points
Pr.178 to Pr.189 (Input terminal function
Pr.684 Tuning data unit switchoverpage 509
Pr.800 Control method selectionpage 215

5.13.2 Offline auto tuning

Magnetic flux Sensorless Magnetic flux Magnetic flux
Sensorless Sensorless Vector Vector Vector
The offline auto tuning enables the optimal operation of a motor.
• Under Advanced magnetic flux vector control, Real sensorless vector control, or Vector control, automatic measurement
of motor constants (offline auto tuning) enables optimal operation of motors even when motor constants vary, when a motor
of another company is used, or when the wiring distance is long.
Pr.0 value (%) after automatic change
Constant-
Standard
torque
*1
Motor
*2
motor
SLD/ ND/ SLD/ ND/ Pr.81 ≠
LD HD LD HD 2, 4, 6
6 6 4
6 4
4 4 3
4 4 2.5
4 4 2.5
3 2 2
3 2 2
2 2 1.5
2 2 1.5
2 1.5
2 2 1.5
2 2 1
2 2 1
1.5 2 1.5 2 1
1.5 2 1.5 2 0.7
1 1 1
voltagepage 681
V/F)page 679
selection)page 496
*3
SF-PR
Pr.81 = 2 Pr.81 = 4 Pr.81 = 6
4 4 4
7.4 6 6.4
5.8 5 3.7
6 4.5 3.3
6.4 4.5 4.2
4.5 3.7 3.3
4.4 4.5 3.8
3.5 3.3 3.5
4.5 3 3.5
4 3.2 3
2.5 3.4 3
3 2 2.5
2 2.5 2.6
2 2 2.4
2 2 0.7
1 1 1
5.13 (C) Motor constant parameters
Pr.12 value (%) after automatic
change
Constant-
Standard
torque SF-PR
*1
Motor
*2
motor
4 4 4
4 4 4
4 4 2.5
4 4 2.5
4 4 2.5
4 2 2
4 2 2
2 2 1.5
2 2 1.5
2 2 1.5
2 2 1
2 2 1
2 2 1
2 2 1
2 2 1
1 1 1
5. PARAMETERS
1
*3
2
3
4
5
6
7
8
9
10
509