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II
Cont
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t
2.5.7
Connection of power regeneration converter (MT-RC)
(02160 or more)....................................................................................................................... 47
2.5.8
Connection of the power factor improving DC reactor (FR-HEL) ............................................ 47
3 PRECAUTIONS FOR USE OF THE INVERTER
49
3.1
Noise and leakage currents .............................................................................. 50
3.1.1
Leakage currents and countermeasures ................................................................................. 50
3.1.2
Inverter-generated noises and their reduction techniques ...................................................... 52
3.1.3
Power supply harmonics ......................................................................................................... 54
3.2
Installation of a reactor ..................................................................................... 55
3.3
Power-off and magnetic contactor (MC) .......................................................... 56
3.4
Inverter-driven 400V class motor ..................................................................... 57
3.5
Precautions for use of the inverter .................................................................. 58
4 PARAMETERS
61
4.1
Operation panel (FR-DU07) ............................................................................... 62
4.1.1
Parts of the operation panel (FR-DU07) .................................................................................. 62
4.1.2
Basic operation (factory setting) .............................................................................................. 63
4.1.3
Change the parameter setting value ....................................................................................... 64
4.1.4
Setting dial push ...................................................................................................................... 64
4.2
Parameter List .................................................................................................... 65
4.2.1
Parameter list .......................................................................................................................... 65
4.3
Control mode..................................................................................................... 83
4.3.1
What is vector control? ........................................................................................................... 84
4.3.2
Change the control method (Pr. 80, Pr. 81, Pr. 451, Pr. 800) ................................................ 87
4.4
Speed control by real sensorless vector control, vector control................. 91
4.4.1
Setting procedure of real sensorless vector control (speed control) ..................................... 92
4.4.2
Setting procedure of vector control (speed control) ............................................................... 93
4.4.3
Torque limit level setting for speed control
(Pr. 22, Pr. 803, Pr. 810 to Pr. 817, Pr. 858, Pr. 868, Pr. 874) ............................................. 94
4.4.4
To perform high accuracy/fast response operation (gain adjustment of real
sensorless vector control and vector control) (Pr. 818 to Pr. 821, Pr. 830,
Pr. 831, Pr. 880) .................................................................................................................. 99
4.4.5
Speed feed forward control, model adaptive speed control (Pr. 828, Pr. 877 to Pr. 881) ... 106
4.4.6
Torque biases (Pr. 840 to Pr. 848) ...................................................................................... 108
4.4.7
Prevent the motor from overrunning (Pr. 285, Pr. 853, Pr. 873) .......................................... 111
4.4.8
Notch filter (Pr. 862, Pr. 863) ............................................................................................... 112
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