Delta VFD-L-I Series, Руководство пользователя

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Chapter 4 Parameters
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VFD-L-I Series
4-48 Revision July 2009, SW V1.1
motor temperature rise, poor insulation and unstable torque output when the motor exceeds
12%~20% rated voltage. In such case for a long time, it will shorten the motor life quickly.
AVR function automatically regulates the AC drive output voltage to the motor rated voltage.
For instance, if V/f curve is set to 200VAC/50Hz and the input power is 200~264VAC, the
output voltage will automatically be reduced to a max. of 200VAC. If the input voltage varying
between 180 to 200VAC, the output voltage may vary between 180 to 200VAC.
Selecting program value 2 enables the AVR function and also disables the AVR function
during deceleration. This offers a quicker deceleration.
08-16
Software Braking Level
Unit: 1
Settings 350 to 450V Factory Setting: 380
During deceleration, the DC-bus voltage will increase due to motor regeneration. When DC
bus voltage level exceeds the Software Braking Level, the DC brake output pins (B1, B2) will
be activated.
08-17
Lower Bound of DC Braking Start-up Frequency
Unit: 0.1
Settings 0.0 to 400 Hz Factory Setting: 0.0
When the setting frequency is lower than Pr.08-17, the DC Braking will not be activated when
stops.