Table Of Contents - Mitsubishi Electric FR-A720-0.4K Instruction Manual

1 OUTLINE
1.1 Product checking and parts identification ........................................................ 2
1.2 Inverter and peripheral devices .......................................................................... 3
1.2.1 Peripheral devices ..................................................................................................................... 4
1.3 Method of removal and reinstallation of the front cover.................................. 6
1.4 Installation of the inverter and enclosure design ............................................. 8
1.4.1 Inverter installation environment................................................................................................ 8
1.4.2 Cooling system types for inverter enclosure............................................................................ 10
1.4.3 Inverter placement ................................................................................................................... 10
2 WIRING
2.1 Wiring.................................................................................................................. 14
2.1.1 Terminal connection diagram .................................................................................................. 14
2.1.2 EMC filter ................................................................................................................................. 15
2.2 Main circuit terminal specifications ................................................................. 16
2.2.1 Specification of main circuit terminal ....................................................................................... 16
2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor wiring. ........ 16
2.2.3 Cables and wiring length ......................................................................................................... 19
2.2.4 When connecting the control circuit and the main circuit separately
to the power supply ................................................................................................................. 23
2.3 Control circuit specifications ........................................................................... 25
2.3.1 Control circuit terminals ........................................................................................................... 25
2.3.2 Changing the control logic ....................................................................................................... 28
2.3.3 Wiring of control circuit ............................................................................................................ 30
2.3.4 Wiring instructions ................................................................................................................... 31
2.3.5 Mounting the operation panel (FR-DU07) or parameter unit (FR-PU07)
on the enclosure surface ......................................................................................................... 32
2.3.6 RS-485 terminal block ............................................................................................................. 32
2.3.7 Communication operation........................................................................................................ 32
2.4 Connection of motor with encoder (vector control) ....................................... 33
2.5 Connection of stand-alone option units .......................................................... 40
2.5.1 Connection of the dedicated external brake resistor (FR-ABR) .............................................. 40
2.5.2 Connection of the brake unit (FR-BU2) ................................................................................... 42
2.5.3 Connection of the brake unit (FR-BU/MT-BU5) ....................................................................... 44
2.5.4 Connection of the brake unit (BU type) ................................................................................... 46
2.5.5 Connection of the high power factor converter (FR-HC/MT-HC)............................................. 46
2.5.6 Connection of the power regeneration common converter (FR-CV) ....................................... 48
CONTENTS
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