Mitsubishi FR-A846-00023, Инструкция по эксплуатации

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CONTENTS
5
2.11.3 Connection of the brake unit (BU type)...........................................................................................................64
2.11.4 Connection of the high power factor converter (FR-HC2) ..............................................................................65
2.11.5 Connection of the power regeneration common converter (FR-CV) ..............................................................66
2.11.6 Connection of the power regeneration converter (MT-RC).............................................................................67
3 PRECAUTIONS FOR USE OF THE INVERTER 69
3.1 Electro-magnetic interference (EMI) and leakage currents 70
3.1.1 Leakage currents and countermeasures ........................................................................................................70
3.1.2 Countermeasures against inverter-generated EMI.........................................................................................72
3.1.3 Built-in EMC filter ............................................................................................................................................74
3.2 Power supply harmonics 76
3.2.1 Power supply harmonics.................................................................................................................................76
3.2.2 Harmonic suppression guidelines in Japan ....................................................................................................77
3.3 Installation of a reactor 79
3.4 Power-OFF and magnetic contactor (MC) 80
3.5 Countermeasures against deterioration of the 400 V class motor insulation 81
3.6 Checklist before starting operation 82
3.7 Failsafe system which uses the inverter 84
4 PROTECTIVE FUNCTIONS 87
4.1 Inverter fault and alarm indications 88
4.2 Reset method for the protective functions 88
4.3 Faults history and the list of fault displays 89
5 PRECAUTIONS FOR MAINTENANCE AND
INSPECTION 91
5.1 Inspection item 92
5.1.1 Daily inspection...............................................................................................................................................92
5.1.2 Periodic inspection..........................................................................................................................................92
5.1.3 Daily and periodic inspection ..........................................................................................................................93
5.1.4 Checking the inverter and converter modules ................................................................................................95
5.1.5 Cleaning..........................................................................................................................................................95
5.1.6 Replacement of parts......................................................................................................................................96
5.2 Measurement of main circuit voltages, currents, and powers 116
5.2.1 Measurement of powers ...............................................................................................................................118
5.2.2 Measurement of voltages and use of PT ......................................................................................................118
5.2.3 Measurement of currents..............................................................................................................................119
5.2.4 Use of CT and transducer.............................................................................................................................119
5.2.5 Measurement of inverter input power factor .................................................................................................119