User manual

Chapter 5 Description of Parameter Settings

& AVR function automatically regulates the AC drive output voltage to the

Maximum Output Voltage (Pr.1-02). For instance, if Pr.1-02 is set at 200 VAC

and the input voltage is at 200V to 264VAC, then the Maximum Output Voltage

will automatically be regarded to 200 VAC.

& Without AVR function, the Maximum Output Voltage may vary between 180V

to 264VAC, due to the input voltage varying between 180V to 264 VAC.

& Selecting program value d2 enables the AVR function and also disables the

AVR function during deceleration. This offers a quicker deceleration.

8 - 16 Dynamic Braking Voltage Factory Setting: d 380*

Settings d 350 to d 450V* Unit: 1Volt*

*Twice value for 460V class

& During deceleration, the DC-bus voltage will increase due to motor

regeneration. When DC bus voltage level exceeds the Dynamic Braking

Voltage, the DC brake output pins (B1, B2) will be activated.

8 - 17 DC Braking Inhibit Frequency Factory Setting: d 0

Settings d 0 to d 400 Unit: 0.1 Hz

& This parameter determines the frequency range (from Pr.8-17 to 0 Hz) where

DC injection braking will be inhibited. If the output frequency during stopping

is at or below Pr.8-03, but above Pr.8-17 then DC braking is applied. 0DC

braking will always be inhibited if Pr.8-17 is equal to or greater than Pr.8-03.