Operation principle and hardware description 19
2
Operation principle and
hardware description
Contents of this chapter
This chapter contains a description of the diode supply unit. The information is valid for the
units with ACS880-304 +A018 diode supply modules.
Operation principle
The heart of the diode supply unit is a diode-thyristor bridge. It rectifies three-phase AC
current to direct current for the intermediate DC link of the drive. The intermediate DC link
supplies the inverter that run the motor. There can be one inverter unit only (single drives)
or several inverter units (multidrives) connected to the intermediate circuit. The DSU
modules have inbuilt AC chokes. The AC chokes smoothen the current waveform in the
power supply network and voltage in the DC link of the drive.
The main difference between the ordinary diode-diode bridge and the controlled diode-
thyristor bridge is the controllability. You cannot control the operation of the diodes but you
can control the thyristors: thyristor can be kept blocked or controlled conductive in forward
direction. By controlling the thyristors, you can limit the AC current of the drive at the
power up without additional charging circuit in the supply unit or in inverter units.
Содержание ACS880-304 +A018
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Страница 53: ...Cabinet construction 53 Stage 1 Installation of common parts ...
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Страница 55: ...Cabinet construction 55 Stage 3 Module installation ...
Страница 56: ...56 Cabinet construction Stage 4 AC busbars to the module ...
Страница 57: ...Cabinet construction 57 Stage 5 DC busbars to the module ...
Страница 58: ...58 Cabinet construction Stage 6 Shroud installation ...
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Страница 61: ...Cabinet construction 61 Stage 1 Installation of common parts ...
Страница 62: ...62 Cabinet construction Stage 2 Module installation parts ...
Страница 63: ...Cabinet construction 63 Stage 3 Quick connector installation ...
Страница 64: ...64 Cabinet construction Stage 4 DC busbars to the module ...
Страница 65: ...Cabinet construction 65 Stage 5 AC busbars to quick connector ...
Страница 66: ...66 Cabinet construction Stage 6 AC busbar ...
Страница 67: ...Cabinet construction 67 Stage 7 Module installation ...
Страница 68: ...68 Cabinet construction Stage 8 Shroud installation ...
Страница 70: ...70 Cabinet construction Kits for 1 D8T 6 pulse generic cabinet ...
Страница 72: ...72 Cabinet construction Kits for 2 D8T 6 pulse Rittal TS 8 ...
Страница 73: ...Cabinet construction 73 Stage 1 Installation of common parts ...
Страница 74: ...74 Cabinet construction Stage 2 Module installation parts ...
Страница 75: ...Cabinet construction 75 Stage 3 Quick connector installation ...
Страница 76: ...76 Cabinet construction Stage 4 DC busbars ...
Страница 77: ...Cabinet construction 77 Stage 5 AC busbars to quick connector ...
Страница 78: ...78 Cabinet construction Stage 6 AC fuse busbars installation ...
Страница 79: ...Cabinet construction 79 Stage 7 Module installation ...
Страница 80: ...80 Cabinet construction Stage 8 Shroud installation ...
Страница 82: ...82 Cabinet construction Kits for 2 D8T 6 and 12 pulse generic cabinet ...
Страница 84: ...84 Cabinet construction Kits for 2 D8T 12 pulse Rittal TS 8 ...
Страница 85: ...Cabinet construction 85 Stage 1 Installation of common parts ...
Страница 86: ...86 Cabinet construction Stage 2 Module installation parts ...
Страница 87: ...Cabinet construction 87 Stage 3 Quick connectors ...
Страница 88: ...88 Cabinet construction Stage 4 DC busbar installation ...
Страница 89: ...Cabinet construction 89 Stage 5 AC busbars to quick connector ...
Страница 90: ...90 Cabinet construction Stage 6 AC busbars to main AC installation ...
Страница 91: ...Cabinet construction 91 Stage 7 Module installation DC connection flanges ...
Страница 92: ...92 Cabinet construction Stage 8 Shroud installation ...
Страница 94: ...94 Cabinet construction Kits for 3 D8T 6 pulse generic cabinet ...
Страница 104: ...104 Electrical installation 3 b a 5 A cable lead through example This is to be acquired by the cabinet installer ...
Страница 118: ...118 Start up ...
Страница 125: ...Maintenance 125 2 3 ...
Страница 127: ...Maintenance 127 2 3 ...
Страница 132: ...132 Maintenance 4 5 6 7 8 6 10 10 ...
Страница 140: ...140 Maintenance 5 a c b 6 d e 9 ...
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Страница 214: ...214 Ordering information ...
Страница 240: ...240 Dimension drawings Dimensions of D7T supply module ...
Страница 241: ...Dimension drawings 241 Dimensions of D8T supply module ...
Страница 242: ...242 Dimension drawings Dimensions of quick connector for D8T module Dimensions in mm 1 mm 0 0394 in ...
Страница 243: ...Dimension drawings 243 Dimensions of the pull out ramp for D8T module Dimensions in mm 1 mm 0 0394 in ...
Страница 244: ...244 Dimension drawings Dimensions of BCU control unit ...
Страница 247: ...Dimension drawings 247 Dimensions of OT2000E12 IEC www abb com Dimensions in mm 1 mm 0 0394 in OT2000E12 ...
Страница 255: ...Dimension drawings 255 Miscellaneous components CRBB 4 400 188 cooling fan 218 Dimensions in mm 1 mm 0 0394 in ...
Страница 256: ...256 Dimension drawings RFI filter and related accessories RFI filter Dimensions in mm 1 mm 0 0394 in ...
Страница 257: ...Dimension drawings 257 Oval toroid kit ...
Страница 258: ...258 Dimension drawings Oval toroid ...
Страница 259: ...Dimension drawings 259 Dimensions of CVAR board UL CSA Dimensions in mm 1 mm 0 0394 in ...
Страница 260: ...260 Dimension drawings ...
Страница 280: ...www abb com drives www abb com drivespartners 3AXD50000010104 Rev C EN 2015 12 03 Contact us ...