General Information; About The Manual; Terms And Definitions Used In The Manual - WEG DBW03 Serie Manual Del Usuario

General Information

2 GENERAL INFORMATION

2.1 ABOUT THE MANUAL

This manual contains information regarding the proper installation and operation,
start-up, the main characteristics and shows how to troubleshoot the most common
problems of the DBW03 braking module.
The DBW03 is an accessory that enables the braking of motors driven by inverters,
with reduced time, providing faster dynamics when necessary.

2.2 TERMS AND DEFINITIONS USED IN THE MANUAL

DC Link: Inverter intermediate circuit. DC voltage obtained from the rectification of
the AC input voltage or from an external power supply. It supplies the output inverter
bridge, formed by IGBTs.
Inverter: circuit that transforms the direct voltage of the DC link into alternate voltage AC.
IGBT: Insulated Gate Bipolar Transistor - basic component of the output inverters.
They work as electronic switches in the modes: saturated (closed switch) and cut
off (open switch).
Braking IGBT: works as a switch to turn on the braking resistors. It is controlled by
the DC link level.
PE: Protective Earth.
PWM: Pulse Width Modulation; modulation by pulse width; pulsed voltage generated
by the output inverter which feeds the motor.
Switching Frequency: it is the inverter bridge IGBTs commutation frequency,
specified normally in kHz.
Heatsink: it is a metal part designed for dissipating the heat generated by the power
semiconductors.
Amp, A: amperes.
°C: Celsius degree.
°F: Fahrenheit degree.
AC: Alternating Current.
DC: Direct Current.
CFM: "Cubic Feet per Minute"; it is a flow measurement unit.
cm: centimeter.
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