Optional Braking Chopper; Figure 3-20 Acs1000I With Braking Chopper (1); Figure 3-21 Principle Diagram - ABB ACS1000i User Manual

3.4.12. Optional Braking Chopper

The optional braking chopper uses resistor braking to provide motor braking and shorter
deceleration times, eg, for:
– Reduction of coasting down time, eg, for conveyor belts, fans, and pumps
– Emergency stops
The braking chopper cabinet connects to the right side of the drive as well as to the braking
resistors, which are external to the ACS1000i and not part of the product scope.
Figure 3–20 ACS1000i with braking chopper (1)
The braking chopper is controlled and monitored by the ACS1000i.
1
Figure 3–21 Principle diagram
1) Rectifier
2) Braking chopping
PRODUCT
ACS1000i
2
VC1
4
Rb
VCs2
VC2
DOCUMENT KIND
User manual
POWER ELECTRONICS AND CABINET FEATURES
1
3
C1
C2
3) Inverter
4) Braking resistor
DOCUMENT ID.
3BHS206977 E01
REV. LANG. PAGE
J en 38/146