Table Of Contents - Mitsubishi Electric FR-A760 Series 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.................................. 5
1.4 Installation of the inverter and enclosure design ............................................. 7
1.4.1 Inverter installation environment................................................................................................ 7
1.4.2 Cooling system types for inverter enclosure.............................................................................. 9
1.4.3 Inverter placement ................................................................................................................... 10
2 WIRING
2.1 Wiring.................................................................................................................. 14
2.1.1 Terminal connection diagram .................................................................................................. 14
2.1.2 Connection of accessory optional brake resistor ..................................................................... 15
2.2 Main circuit terminal specifications ................................................................. 17
2.2.1 Specification of main circuit terminal ....................................................................................... 17
2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor wiring. ........ 18
2.2.3 Cables and wiring length ......................................................................................................... 21
2.2.4 When connecting the control circuit and the main circuit separately
to the power supply (separate power) ..................................................................................... 24
2.3 Control circuit specifications ........................................................................... 26
2.3.1 Control circuit terminals ........................................................................................................... 26
2.3.2 Changing the control logic ....................................................................................................... 29
2.3.3 Control circuit terminal layout .................................................................................................. 31
2.3.4 Wiring instructions ................................................................................................................... 31
2.3.5 When connecting the operation panel using a connection cable ............................................ 32
2.3.6 RS-485 terminal block ............................................................................................................. 33
2.3.7 Communication operation........................................................................................................ 33
2.4 Connection of motor with encoder (vector control) ....................................... 34
2.5 Connection of stand-alone option units .......................................................... 37
2.5.1 Connecting an external brake resistor other than dedicated external brake resistor (provided).
(FR-A760-00330 or less) ......................................................................................................... 37
2.5.2 Connection of the brake unit (FR-BU-C) ................................................................................. 39
2.5.3 Connection of the power factor improving DC reactor............................................................. 39
3 PRECAUTIONS FOR USE OF THE INVERTER
3.1 Noise and leakage currents .............................................................................. 42
CONTENTS
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