6
Preface
Thank you very much for choosing our converter.
This manual describes how to handle a main unit of the converter.
It provides instructions for using the converter, such as how to install, wire, and operate it correctly as
well as handling methods of its protection operation.
Before operating it, be sure to carefully read this manual. Also, keep this manual in an appropriate place so
that operators can always take and read it.
In addition to the standard functions, the converter provides many features. You can build an optimal system
for different applications by using its various functions. In such a case, use the values described in the
dedicated "Operating Instructions" and "Test Report" for the function.
When delivering any of your products with our converter built in, consider that this manual can be distributed
to end users. Also, when changing our factory default initialized data (hereinafter referred to as
Initialize.Val) for setting parameters of the converter, make sure that end users can be informed about the
changed contents of the Initialize.Val.
Product Overview
Connecting VF66R to an inverter causes the regenerative energy from the motor to return to the power supply
efficiently, which results in energy saving. Also, the power supply harmonics generated from an inverter can
be suppressed significantly.
VF66R provides the PWM sine wave mode and 120-degree conduction mode.
The 120-degree conduction mode enables regenerative operation without high-speed switching since it energizes
according to the phase of three-phase power supply voltage in turn so that the energization period of each phase
becomes 120 degrees.
