Mitsubishi Electronics FR-D720-008, FR-D720S-008, FR-D740-012

1 OUTLINE 1

1.1 Product checking and parts identification.........................................2

1.2 Inverter and peripheral devices..........................................................3

1.2.1 Peripheral devices.. ........................................................................................................................ 4

1.3 Removal and reinstallation of the cover ............................................5

1.3.1 Front cover.............................................................................................. ........................................ 5

1.3.2 Wiring cover......................................................... ........................................................................... 7

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............................ ............................................................................................ 11

2 WIRING 13

2.1 Wiring.................................................................................................14

2.1.1 Terminal connection diagram ....................................................................................................... 14

2.2 Main circuit terminal specifications.................................................15

2.2.1 Specification of main circuit terminal ............................................................................................ 15

2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor wiring............... 15

2.2.3 Cables and wiring length .............................................................................................................. 17

2.3 Control circuit specifications........................................................... 20

2.3.1 Control circuit terminal......................... ......................................................................................... 20

2.3.2 Changing the control logic ............................................................................................................ 22

2.3.3 Wiring of control circuit ................................................................................................................. 24

2.3.4 Wiring instructions ........................................................................................................................ 28

2.3.5 Connection to the PU connector................................................................. .................................. 29

2.4 Connection of stand-alone option unit .............................................31

2.4.1 Connection of a dedicated external brake resistor (MRS type, MYS type, FR-ABR)

(FR-D720-025 or more, FR-D740-012 or more, FR-D720S-025 or more) ................................... 31

2.4.2 Connection of the brake unit (FR-BU2) ........................................................................................ 33

2.4.3 Connection of the high power factor converter (FR-HC) .............................................................. 34

2.4.4 Connection of the power regeneration common converter (FR-CV) ............................................ 35

2.4.5 Connection of a DC reactor (FR-HEL)........................................................... ...............................35

3 PRECAUTIONS FOR USE OF THE INVERTER 37

3.1 EMC and leakage currents................................................................38

CONTENTS