Control Techniques Unidrive Regen Installation Manual page 4

Appendix A Unidrive Regen as a Brake Resistor Replacement ............................................. 30
A.1 Introduction ......................................................................................................................................... 30
A.2 Drive configurations ............................................................................................................................ 30
A.3 When to use a Regen drive as a brake resistor replacement ............................................................. 30
A.4 Regen and motoring drive ratings ....................................................................................................... 31
A.5 Power circuit connections and components ....................................................................................... 31
A.6 Control circuit connections .................................................................................................................. 34
A.7 Regen brake drives in operation ......................................................................................................... 35
Appendix B Component sizing calculations ............................................................................ 36
B.1 Sizing of MCB for switching frequency filter ....................................................................................... 36
B.2 Resistor sizing for multiple motoring systems ..................................................................................... 37
B.3 Multiple Unidrive size 5 systems ......................................................................................................... 38
B.4 Thermal / magnetic overload protection for soft start circuit ............................................................... 38
Appendix C Long cables ............................................................................................................ 41
C.1 Exceeding the maximum cable length ................................................................................................ 41
Appendix D Regen kits ............................................................................................................... 43
D.1 Single Regen, single motoring systems .............................................................................................. 43
D.2 Single Regen, multiple motoring and multiple Regen, multiple motoring systems ............................. 43
Appendix E Unidrive Regen specifications ............................................................................. 44
Appendix F Physical dimensions ............................................................................................. 45
F.1 Regen inductor ................................................................................................................................... 45
F.2 Softstart resistor - type TG series ....................................................................................................... 47
F.3 Switching frequency filter capacitors .................................................................................................. 48
F.4 Switching frequency filter inductor ...................................................................................................... 51
F.5 Varistors .............................................................................................................................................. 53
Unidrive Regen Installation Guide
Issue Number: 2