Braking Chopper Unit - ABB ACS6080 User Manual

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.
(1) Resistor (external)
(1) IGCT
3BHS842007 E01 REV C
2
1
Figure 3-22 BCU circuit diagram
Figure 3-23 BCU cabinet
ACS6080 USER MANUAL
03 POWER ELECTRONICS AND CABINET FEATURES
DC (+)
DC (NP)
DC (-)
(2) BCU
1
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