ABB ACS850 series, Hardware Manual

Page: 21 / 120

Operation principle and hardware description
21
Operation principle and hardware description
What this chapter contains
This chapter describes the operating principle and construction of the ACS850-04
drive module in short.
Operation principle
Main circuit
The main circuit of the drive module is shown below.
~
=
Motor output
Braking chopper (see chapter Resistor braking on
page 103 )
+ –
UDC+ UDC- V1 W1 U1
~
=
V2 W2 U2 R- R+
AC supply
ACS850-04
Inverter
Capacitor bank
Rectifier
CHK-xx mains choke (see chapter Mains chokes
on page 91 )
JFI-xx EMC filter (see chapter EMC filters on page
93 )
JBR-xx braking resistor (see chapter Resistor
braking on page 103 )
NOCHxxxx-xx du/dt filter (see
chapter du/dt and common mode
filtering on page 99 )