Delta VFD L1 Series Variable Frequency Drives

The Delta VFD L series are sub-fractional low-cost AC Motor Drives. These inverters are specifically designed for applications with low power requirements. The VFD L series comes with a built-in EMI filter to efficiently reduce electromagnetic interference and to conform to the CE EMI directive.

The Delta VFD L inverters are designed to operate at 115VAC and 230VAC voltage categories. Only 1-Phase operation is supported by the 115VAC voltage class, with output power ratings of 200-400W. When operating in 230VAC class, 1-Phase operation has an output power range of 200W – 0.75 kW (20W – 1HP) while 3-Phase operation has an output power range of 200W – 1.5 kW (200W – 2HP).

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  • Output frequency 1.0-120Hz
  • Adjustable V/f curve
  • Carrier frequency up to 10 kHz
  • Auto torque boost
  • Build-in MODBUS communication, baud rate up to 9600 bps
  • Built-in EMI filter


  • Machine tools
  • Textile machines
  • Woodworking machines
  • Packaging machines
  • Electronics
  • Fans
  • Pumps
  • Air compressors



Voltage Class 115V 230V
Model Number VFD-_ _ _L_ _ 002 004 002 004 007 015 022
Applicable Motor Output (kW) 0.2 0.4 0.2 0.4 0.7 1.5 2.2
Output Rating Rated Output

Capacity (KVA)

0.6 1.0 0.6 1.0 1.6 2.7 4.2
Rated Output Current (A) 1.6 2.5 1.6 2.5 4.2 7.0 11.0

Max. Output Voltage (V)

3-phase corresponds to double

input voltage


Three-phase corresponds to input voltage

Rated Frequency (Hz) 1.0~400Hz
Power Rated Input Current (A) 6 9 4.9/1.9 6.5/2.7 9.7/5.1 15.7/9 24

Input voltage Tolerance

Single phase 90~132V



Single / 3-phase 180~264V 50/60Hz

Single phase 180~264V


Frequency tolerance ±5%
Control Characteristics Control system SVPWM (Sinusoidal Pulse Width Modulation, carried frequency 3kHz~10kHz)
Output Frequency Resolution 0.1Hz
Torque Characteristics Including the auto-torque, auto-slip compensation, starting torque can be 150% at 5 Hz
Overload Endurance 150% of rated current for 1 minute
Accel/Decel Time 0.1~600Sec. (can be set individually)
V/F pattern V/F pattern adjustable
Stall Prevention Level 20~200%, setting of Rated Current
Operating Characteristics  

Frequency Setting

Keypad Setting by ▲▼ keys or V.R
External Signal Potentiometer-5KÙ/0.5W, DC 0 ~ +10V (input impedance 47KÙ),

4~20mA (output impedance 250Ù), multi-function inputs1 to 3 (3steps, JOG, UP/DOWN command), communication setting



Keypad Setting by RUN//STOP keys
Signal External


M0,M1,M2,M3 can be combined to offer various modes of operation,

RS-485 communication port

Multi-function Input Signal Multi-step selection 0 to 3, Jog, accel/decel inhibit, first/second accel/decel switch, counter, PLC Operation, external Base Block

(NC,NO) selection

Multi-function Output Signal AC Drive Operating, Frequency Attained, Non-zero speed, Base Block, Fault Indication, Local/Remote indication, PLC Operation




Other Function

AVR, S-curve, Over-Voltage Stall Prevention, DC Braking, Fault Records, Adjustable Carried Frequency, Starting Frequency Setting of DC Braking , Over-Current Stall Prevention, Momentary Power

Loss restart, Reverse Inhibition, Frequency Limits, Parameter Lock/Reset

Protection Over Voltage, Over Current, Under Voltage, Overload, Electronic thermal, Overheating, Self-testing
Other Including EMI Filter Without

EMI Filter

Cooling Forced air-cooling
Environment Installation Location Altitude 1,000 m or below, keep from corrosive gasses, liquid and dust
Ambient Temperature -10℃-40℃ (Non-Condensing and not frozen)
Storage Temperature -20℃  to 60℃
Ambient Humidity Below 90%RH (non-condensing)
Vibration 9.80665m/s2(1G) less than 20Hz, 5.88m/s2 (0.6G) at 20 to 50Hz