Resistor Braking; Contents Of This Chapter; Operation Principle And Hardware Description; Resistor Braking, Frames R0 - ABB ACS560 Hardware Manual

Resistor braking

Contents of this chapter

The chapter describes how to select the brake resistor and cables, protect the
system, connect the brake resistor and enable resistor braking.

Operation principle and hardware description

The brake chopper handles the energy generated by a decelerating motor. The
chopper connects the brake resistor to the intermediate DC circuit whenever the
voltage in the circuit exceeds the limit defined by the control program. Energy
consumption by the resistor losses lowers the voltage until the resistor can be
disconnected.
For frames R0...R3 internal brake choppers and resistors, see below. For R4...R8
external brake choppers and resistors, see
R4...R8 (page 188)
Resistor braking, frames R0...R3
￭

Planning the braking system

Selecting the brake resistor

Frames R0...R3 have an built-in brake chopper as standard equipment. The brake
resistor is selected using the table and equations presented in this section.
Determine the required maximum braking power P
1.
P must be smaller than P
Rmax
type.
.
BRmax
Resistor braking, frames
Rmax
given in the table on page for the used drive
Resistor braking 181
11
for the application.