Danfoss VTT Series Applications And Installation Manual page 5

Variable twin turbo centrifugal compressors
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Circuit Grounding ...................................................................................................................................................................................... 62
Drive Module Controls Connections .................................................................................................................................................. 62
Drive Module Control Terminal Types ................................................................................................................................................ 63
Drive Module ModBus and Interlock Connections ...................................................................................................................... 64
Drive Module Installing Control Terminals ....................................................................................................................................... 65
Drive Module Basic Wiring ..................................................................................................................................................................... 65
Default Settings ................................................................................................................................................................................... 65
Interlock ................................................................................................................................................................................................. 65
Drive Module Serial Communications ............................................................................................................................................... 66
Drive Module Installing Control Cables ............................................................................................................................................ 66
Drive Module RS-485 Bus Termination .............................................................................................................................................. 67
LED Cover Description ............................................................................................................................................................................ 68
Access to Control Terminals ................................................................................................................................................................... 68
Fieldbus Connection ......................................................................................................................................................................... 68
Electrical Power Wiring .......................................................................................................................69
Drive Module Power Connections ..................................................................................................................................................... 69
Mains AC Input Line Connection ........................................................................................................................................................ 70
Grounding Connection Guidelines ................................................................................................................................................... 70
Safety Grounding Connection ....................................................................................................................................................... 71
Motor Cable Connections ..................................................................................................................................................................... 71
Motor Rotation Check ............................................................................................................................................................................. 72
DC-DC Converter Supply Connection ............................................................................................................................................... 72
Connection Tightening Torques .......................................................................................................................................................... 73
M-AI-VT-001-EN Rev.C.1
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Vtt880Vtt1000Vtt1200

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