3BHS212794 E01 REV M
ACS6000
USER MANUAL
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03 POWER ELECTRONICS AND CABINET FEATURES
3.3.4.1
Braking chopper unit
A BCU is used when the braking scenario requires consistent energy
dissipation. The energy generated during braking is dissipated in external
water-cooled resistors, which are not part of the drive.
Figure 3-26 BCU circuit diagram
Figure 3-27 BCU cabinet
(1) Resistor (external)
(2) BCU
(1) IGCT
DC (+)
DC (NP)
DC (-)
1
2
1