Delta VFD-L Series

5
VFD-L Series
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5-39
8 - 15
A
utomatic Voltage Regulation (AVR) Factory Setting: d 2
Settings d 0 AVR function enabled
d 1 AVR function disabled
d 2 AVR function disabled when deceleration
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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.
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Without AVR function, the Maximum Output Voltage may vary between 180V to 264VAC,
due to the input voltage varying between 180V to 264 VAC.
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Selecting program value d2 enables the AVR function and also disables the AVR function
during deceleration. This offers a quicker deceleration.
8 - 16
D
ynamic Braking Voltage
F
actory Setting: d 380*
Settings d 350 to d 450V* Unit: 1Volt*
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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
D
C Braking Lower Bound Limit Factory Setting: d 0.0
Settings d0.0 to d400 Hz Unit: 0.1Hz
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The setting frequency is lower than Pr.8-17, the DC Braking will not be activated when
stops.