5(86)
NX User's Manual
Index
1. SAFETY.................................................................................................................................. 7
1.1 WARNINGS......................................................................................................................................7
1.2 SAFETY INSTRUCTIONS ....................................................................................................................7
1.3 EARTHING AND EARTH FAULT PROTECTION........................................................................................8
1.4 RUNNING THE MOTOR ......................................................................................................................8
2. EU DIRECTIVE....................................................................................................................... 9
2.1 CE MARKING...................................................................................................................................9
2.2 EMC DIRECTIVE ..............................................................................................................................9
2.2.1 General.....................................................................................................................................9
2.2.2 Technical criteria.......................................................................................................................9
2.2.3 NX frequency converter EMC classification...............................................................................9
2.2.4 Manufacturer's declaration of conformity.................................................................................10
3. RECEIPT OF SHIPMENT..................................................................................................... 12
3.1 TYPE DESIGNATION CODE...............................................................................................................12
3.2 STORAGE......................................................................................................................................12
3.3 MAINTENANCE...............................................................................................................................13
3.4 WARRANTY ...................................................................................................................................13
4. TECHNICAL DATA.............................................................................................................. 14
4.1 INTRODUCTION ..............................................................................................................................14
4.2 POWER RATINGS ...........................................................................................................................16
4.2.1 NX5 – Mains voltage 380—500 V............................................................................................16
4.3 TECHNICAL DATA ...........................................................................................................................17
5. INSTALLATION.................................................................................................................... 19
5.1 MOUNTING ....................................................................................................................................19
5.2 COOLING.......................................................................................................................................25
5.3 POWER LOSS.................................................................................................................................26
5.3.1 Power loss as function of switching frequency.........................................................................26
6. CABLING AND CONNECTIONS ......................................................................................... 28
6.1 POWER UNIT..................................................................................................................................28
6.1.1 Power connections..................................................................................................................30
6.1.1.1 Mains cable ......................................................................................................................30
6.1.1.2 Motor cable.......................................................................................................................30
6.1.1.3 Control cable ....................................................................................................................30
6.1.1.4 Cable and fuse sizes ........................................................................................................31
6.1.2 Installation instructions............................................................................................................32
6.1.2.1 Stripping lengths of motor and mains cables.....................................................................34
6.1.2.2 NX frequency converter frames and installation of cables.................................................35
6.1.3 Cable installation and the UL standards..................................................................................39
6.1.4 Cable and motor insulation checks..........................................................................................39
6.2 CONTROL UNIT ..............................................................................................................................40
6.2.1 Control connections.................................................................................................................40
6.2.1.1 Control cables...................................................................................................................42
6.2.1.2 Galvanic isolation barriers.................................................................................................42
6.2.2 Control terminal signals...........................................................................................................43
6.2.2.1 Digital input signal inversions............................................................................................44