Mitsubishi Electric FR-F800 Series Instruction Manual page 383
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Also See for FR-F800 Series:
- Instruction manual (615 pages) ,
- Sample screen manual (83 pages) ,
- Hardware instruction manual (149 pages)
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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
following table by changing the Pr.71 setting.
Inverter
FR-F820-[]
FR-F840-[]
00046(0.75K) 00023(0.75K) 6
00077(1.5K)
00038(1.5K)
00105(2.2K)
00052(2.2K)
00167(3.7K)
00083(3.7K)
00250(5.5K)
00126(5.5K)
00340(7.5K)
00170(7.5K)
00490(11K)
00250(11K)
00630(15K)
00310(15K)
00770(18.5K) 00380(18.5K) 2
00930(22K)
00470(22K)
01250(30K)
00620(30K)
01540(37K)
00770(37K)
01870(45K)
00930(45K)
02330(55K)
01160(55K)
03160(75K) or
01800(75K) or
higher
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
boostpage 551
Pr.12 DC injection brake operation
Pr.14 Load pattern
selectionpage 554
Pr.96 Auto tuning
setting/statuspage 554
Pr.100 to Pr.109 (Adjustable 5 points
Pr.178 to Pr.189 (Input terminal function
Pr.684 Tuning data unit
382
5. PARAMETERS
5.10 (C) Motor constant parameters
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Pr.0 value (%) after automatic change
Constant-
Standard
torque
*1
motor
*2
motor
6
4
4
4
4
4
4
3
2
3
2
2
2
2
2
2
2
2
2
2
2
2
1.5
1.5
1.5
1.5
1
1
voltagepage 560
V/F)page 558
selection)page 373
switchoverpage 383
search engine
*3
SF-PR
Pr.81 ≠ 2, 4, 6 Pr.81 = 2 Pr.81 = 4 Pr.81 = 6
4
7.4
6
3
5.8
5
2.5
6
4.5
2.5
6.4
4.5
2
4.5
3.7
2
4.4
4.5
1.5
3.5
3.3
1.5
4.5
3
1.5
4
3.2
1.5
2.5
3.4
1
3
2
1
2
2.5
1
2
2
0.7
2
2
1
1
1
Pr.12 value (%) after automatic
change
Constant-
Standard
torque
*1
motor
*2
motor
6.4
4
4
3.7
4
4
3.3
4
4
4.2
4
4
3.3
4
2
3.8
4
2
3.5
2
2
3.5
2
2
3
2
2
3
2
2
2.5
2
2
2.6
2
2
2.4
2
2
0.7
2
2
1
1
1
SF-
*3
PR
4
2.5
2.5
2.5
2
2
1.5
1.5
1.5
1
1
1
1
1
1
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