Mitsubishi FR-F800-E - Page 7

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CONTENTS
2.9.7 Connection of the power regeneration converter (MT-RC) ............................................................................ 65
2.10 Installing a communication option 66
3 PRECAUTIONS FOR USE OF THE INVERTER 67
3.1 Electro-magnetic interference (EMI) and leakage currents 68
3.1.1 Leakage currents and countermeasures........................................................................................................ 68
3.1.2 Countermeasures against inverter-generated EMI ........................................................................................ 70
3.1.3 Built-in EMC filter............................................................................................................................................ 72
3.2 Power supply harmonics 73
3.2.1 Power supply harmonics ................................................................................................................................ 73
3.2.2 Harmonic suppression guidelines in Japan.................................................................................................... 74
3.3 Installation of a reactor 76
3.4 Power-OFF and magnetic contactor (MC) 77
3.5 Countermeasures against deterioration of the 400 V class motor insulation 78
3.6 Checklist before starting operation 79
3.7 Failsafe system which uses the inverter 81
4 PROTECTIVE FUNCTIONS 83
4.1 Inverter fault and alarm indications 84
4.2 Reset method for the protective functions 84
4.3 Faults history and the list of fault displays 85
4.4 Causes and corrective actions 86
5 PRECAUTIONS FOR MAINTENANCE AND
INSPECTION 87
5.1 Inspection item 88
5.1.1 Daily inspection .............................................................................................................................................. 88
5.1.2 Periodic inspection ......................................................................................................................................... 88
5.1.3 Daily and periodic inspection.......................................................................................................................... 89
5.1.4 Checking the inverter and converter modules................................................................................................ 91
5.1.5 Cleaning ......................................................................................................................................................... 91
5.1.6 Replacement of parts ..................................................................................................................................... 92
5.1.7 Removal and reinstallation of the control circuit terminal block.................................................................... 111
5.2 Measurement of main circuit voltages, currents, and powers 113
5.2.1 Measurement of powers............................................................................................................................... 115
5.2.2 Measurement of voltages ............................................................................................................................. 115
5.2.3 Measurement of currents ............................................................................................................................. 115