4 Unidrive M Regen Design Guide
Issue Number: 4
Contents
1 Safety information .................................8
1.1 Warnings, Cautions and Notes .............................8
1.2 Important safety information. Hazards.
Competence of designers and installers ...............8
1.3 Responsibility ........................................................8
1.4 Compliance with regulations .................................8
1.5 Electrical hazards ..................................................8
1.6 Stored electrical charge ........................................8
1.7 Mechanical hazards ..............................................8
1.8 Access to equipment .............................................8
1.9 Environmental limits ..............................................8
1.10 Hazardous environments ......................................8
1.11 Motor .....................................................................9
1.12 Mechanical brake control ......................................9
1.13 Adjusting parameters ............................................9
1.14 Electromagnetic compatibility (EMC) ....................9
2 Introduction ..........................................10
2.1 Regen operation ..................................................10
2.2 Advantages of Unidrive M operating in
Regen mode ........................................................10
2.3 Principles of operation .........................................10
2.4 Power flow ...........................................................11
2.5 Synchronization ...................................................11
2.6 Current trimming .................................................11
2.7 Regen system configurations ..............................11
2.8 Regen drive system types ...................................11
3 Product Information ............................15
3.1 Model number .....................................................15
3.2 Nameplate description ........................................16
3.3 Ratings ................................................................17
3.4 Drive features ......................................................20
3.5 Unidrive M Rectifier .............................................23
3.6 Unidrive M Rectifier technical data ......................24
3.7 Options ................................................................27
3.8 Items supplied with the drive ...............................29
3.9 Regen components .............................................29
3.10 Combined Regen input filters (combi filter) .........39
4 System design .....................................40
4.1 Introduction .........................................................40
4.2 Power connections ..............................................40
4.3 Switching frequency filter capacitor wiring
configuration to support 8 % THDv
(Total Harmonic Distortion Voltage) ....................41
4.4 Switching frequency filter capacitor wiring
configuration to support 2 % THDv .....................54
4.5 Cable lengths ......................................................67
4.6 Exceeding maximum cable length ......................70
4.7 Regen input filter configuration ...........................74
5 Mechanical Installation ...................... 76
5.1 Safety information .............................................. 76
5.2 Planning the installation ..................................... 76
5.3 Regen component dimensions ........................... 77
5.4 External EMC filter ............................................. 88
5.5 Combined Regen input filters (combi filter) ........ 97
5.6 Cubicle design and drive ambient
temperature ...................................................... 104
6 Electrical Installation ........................ 105
6.1 Power connections ........................................... 106
6.2 Supply requirements ........................................ 117
6.3 Cable and fuse ratings ..................................... 117
6.4 EMC (Electromagnetic compatibility) ............... 126
6.5 External EMC filter ........................................... 128
6.6 Control connections ......................................... 133
7 Getting started .................................. 139
7.1 Regen parameter settings ................................ 139
7.2 Regen drive sequencing .................................. 139
7.3 Regen drive commissioning / start-up .............. 141
7.4 Motoring drive commissioning .......................... 141
8 Optimization ...................................... 142
8.1 Power feed-forward compensation
(Pr 03.010) ....................................................... 142
8.2 Regen controllers ............................................. 143
8.3 Current loop gains ............................................ 143
8.4 Voltage controller proportional gain Kp
(Pr 03.006) ....................................................... 143
8.5 Power factor correction (Pr 04.008) ................. 144
8.6 Current trimming .............................................. 144
8.7 Voltage ramp time control (Pr 03.022) ............. 144
8.8 Frequency limits ............................................... 145
8.9 Voltage limits .................................................... 145
8.10 Supply voltage detection .................................. 145
8.11 Island detection ................................................ 145
8.12 Synchronization headroom (Pr 03.035) ........... 145
8.13 Harmonic reduction .......................................... 145
8.14 Active current reference ................................... 145
8.15 Current feedback filter disable (Pr 04.021) ...... 145
8.16 DC bus voltage high range (Pr 05.023) ............ 145
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