Delta VFD-L Series User Manual

5
VFD-L Series
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
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

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
D
ynamic Braking Voltage
F
actory Setting: d 380*
Settings d 350 to d 450V* Unit: 1Volt*

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

The setting frequency is lower than Pr.8-17, the DC Braking will not be activated when
stops.

Delta VFD-L Series Specifications

General

Control Method	V/F Control
Output Voltage	0 to Input Voltage
Cooling Method	Fan Cooling
Enclosure Rating	IP20
Overload Capacity	150% for 60 seconds
Protection	Over-voltage, Over-current, Overheat, Under-voltage, Short circuit
Braking Unit	Built-in
Operating Temperature	-10°C to 50°C (14°F to 122°F)
Digital Inputs	5 programmable digital inputs
Analog Input	0-10V, 4-20mA
Communication Interface	RS-485 (Modbus)
Storage Temperature	-20°C to 60°C (-4°F to 140°F)
Humidity	90% RH, non-condensing
Altitude	Up to 1000m without derating
Input Voltage	200-240V, 380-480V