Download Delta Electronics Network Device VFD-S Specifications

VFD-S Series
reset/restart operation after any fault has occurred. When enabled, the AC drive will
restart with speed search, which starts at the Master Frequency.
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Automatic Voltage Regulation (AVR)
Settings
d0
AVR function enabled
d1
AVR function disabled
Factory Setting: d 2
d 2 AVR function disabled when deceleration
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 reduced to a
maximum of 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.
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Dynamic Braking Voltage
Settings
Factory Setting: d 380*
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.
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Lower Bound of DC Braking Start-up Frequency
Settings
d0.0 to d400 Hz
Factory Setting: d 0.0
Unit: 0.1Hz
The setting frequency is lower than Pr.8-17, the DC Braking will not be activated when
stops.
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