INVT Goodrive270 Series User Manual

Goodrive270 series VFD for fan and pump Product overview
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3 Product overview
3.1 What this chapter contains
This chapter mainly introduces the working principles, product features, layouts, nameplates and
model designation rules.
3.2 Basic principles
The VFD is used to control asynchronous AC induction motors and permanent magnetic synchronous
motors. The following figure shows the main circuit diagram of the VFD. The rectifier converts 3PH
AC voltage into DC voltage, the capacitor bank of intermediate circuit stabilizes the DC voltage, and
then the inverter converts DC voltage into AC voltage that can be used by an AC motor.
R
S
T
U
V
W
(+)
(-)
PE PE
Figure 3-1 Main circuit
R
S
T
U
V
W
(+)
(-)
Optional DC
reactor
PE PE
Figure 3-2 Main circuit for 400–500kW (included) VFD models (with built-in DC reactors)
Note: Built-in DC reactors are standard parts only for 400–500kW VFD models.

INVT Goodrive270 Series Specifications

General

Brand	INVT
Model	Goodrive270 Series
Category	Water Pump
Language	English