ABB BCU-02 User Manual

Terms and abbreviations
DescriptionTerm
Type of control unitBCU
Conducts the surplus energy from the intermediate circuit of the drive to the
brake resistor when necessary. The chopper operates when the DC link voltage
exceeds a certain maximum limit. The voltage rise is typically caused by decel-
eration (braking) of a high inertia motor.
Brake chopper
Brake chopper enclosed in a metal frame or housing. Intended for cabinet in-
stallation.
Brake chopper module
Brake chopper modules and the necessary auxiliary equipment, such as control
electronics, fusing and cabling
Brake unit
I/O module for controlling cooling fansCIO
The part in which the control program runs.Control unit
Converts direct current and voltage to alternating current and voltage, or vice
versa.
Converter
Charges or discharges an external energy storage (such as a battery or capa-
citor bank) from or into the DC bus
DC/DC-converter
Converter power electronics, related components and DC capacitors enclosed
in a metal frame or enclosure. Intended for cabinet installation.
DC/DC-converter module
DC/DC-converter module(s) under control of one control unit, and related
components
DC/DC-converter unit
Frequency converter for controlling AC motorsDrive
Frequency converter enclosed in a metal frame or enclosure. Intended for
cabinet installation.
Drive module
Diagnostics and panel interface boardFDPI
Optional functional safety modulesFSO-12, FSO-21
Converts direct current and voltage to alternating current and voltage.Inverter
Inverter bridge, related components and drive DC link capacitors enclosed in
a metal frame or enclosure. Intended for cabinet installation.
Inverter module
Inverter module(s) under control of one control unit, and related components.
One inverter unit typically controls one motor.
Inverter unit
Drive for controlling several motors which are typically coupled to the same
machinery. Includes one supply unit, and one or several inverter units.
Multidrive
Optical DDCS communication moduleRDCO
Secure digital memory card (maximum 4 GB)SD card
Secure digital high capacity memory card (4…32 GB)SDHC card
Safe torque off (IEC/EN 61800-5-2)STO
Rectifier bridge and related components enclosed in a metal frame or enclos-
ure. Intended for cabinet installation.
Supply module
Supply module(s) under control of one control unit, and related components.Supply unit
Later in this manual, the term converter covers the terms drive, converter, inverter
and brake chopper.
8 Introduction to the manual

ABB BCU-02 Specifications

General

Brand	ABB
Model	BCU-02
Category	Control Unit
Language	English