Mitsubishi Electric FR-A800 Instruction Manual page 6

2.10.5 Connection of the power regeneration common converter (FR-CV) ..............................................................64
2.10.6 Connection of the power regeneration converter (MT-RC).............................................................................65
3 PRECAUTIONS FOR USE OF THE INVERTER
3.1 Electro-magnetic interference (EMI) and leakage currents
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
3.2.1 Power supply harmonics.................................................................................................................................74
3.2.2 Harmonic suppression guidelines in Japan ....................................................................................................75
3.3 Installation of a reactor
3.4 Power-OFF and magnetic contactor (MC)
3.5 Countermeasures against deterioration of the 400 V class motor insulation
3.6 Checklist before starting operation
3.7 Failsafe system which uses the inverter
4 PROTECTIVE FUNCTIONS
4.1 Inverter fault and alarm indications
4.2 Reset method for the protective functions
4.3 Faults history and the list of fault displays
5 PRECAUTIONS FOR MAINTENANCE AND
INSPECTION
5.1 Inspection item
5.1.1 Daily inspection...............................................................................................................................................90
5.1.2 Periodic inspection..........................................................................................................................................90
5.1.3 Daily and periodic inspection ..........................................................................................................................91
5.1.4 Checking the inverter and converter modules ................................................................................................93
5.1.5 Cleaning..........................................................................................................................................................93
5.1.6 Replacement of parts......................................................................................................................................94
5.1.7 Inverter replacement.....................................................................................................................................113
5.2 Measurement of main circuit voltages, currents and powers
5.2.1 Measurement of powers ...............................................................................................................................116
5.2.2 Measurement of voltages and use of PT ......................................................................................................116
5.2.3 Measurement of currents..............................................................................................................................117
5.2.4 Use of CT and transducer.............................................................................................................................117
5.2.5 Measurement of inverter input power factor .................................................................................................117
5.2.6 Measurement of converter output voltage (across terminals P and N).........................................................117
67
68
74
77
78
79
80
82
85
86
86
87
89
90
114
5
CONTENTS