Delta Electronics VFD007L21A
Delta Electronics VFD007L21A
Delta Electronics VFD007L21A
Delta Electronics VFD007L21A
Delta Electronics VFD007L21A
Delta Electronics VFD007L21A
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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power delivers fully load-tested, out-of-production speed controllers to stabilize your motor velocity loops and shield your machinery from costly powertrain interruptions.

VFD007L21A

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The Delta VFD007L21A AC motor drive is a compact, high-efficiency, low-frequency inverter belonging to Delta's reliable VFD-L series. This VFD007L21A AC motor drive has a rated power of 1 horsepower (0.75 kW), is designed to accept 200-240V single-phase AC input, and provides a 0-240V three-phase AC output with a rated current of 4.2A.
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Technical specifications for VFD007L21A

  • Manufacturer:
    Delta Electronics
  • Part Number:
    VFD007L21A
  • Product Family:
    Delta Computer Systems
  • Product Type:
    AC Motor Drive
  • Stock:
    2
  • Rated Output Power:
    0.75 kW (1 HP)
  • Output Current:
    4.2 A
  • Input Voltage:
    Single-Phase / Three-Phase 200–240 VAC
  • Input Frequency:
    50/60 Hz
  • Output Voltage:
    0–230 VAC (Three-Phase)
  • Output Frequency Range:
    1.0–400 Hz
  • Control Method:
    V/Hz Scalar Control
  • Carrier Frequency:
    Up to 10 kHz
  • Weight:
    1 kg
  • Estimated shipping dimensions:
    6.8x13.2x12.8cm
  • Tariff Code:
    8537101190
  • Country of origin:
    China
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Compatibility & Interoperability Safety & Compliance

Features:

  • Interface Between the Single-Phase AC Power Source and Motor Load
  • Combines Capability of Variable Frequency Control with Adjustable Speed Support
  • Operates in Conjunction with Conveyor Systems and General-Purpose Industrial Machinery
The DELTA VFD007L21A AC Motor Drive continuously converts incoming single-phase AC power (200-240 VAC, 50/60 Hz) to adjustable frequency output and distributes controlled power to the motor to support steady-state operation of conveyor belts, simple wood cutting machines, and wire drawing equipment. Seamless speed adjustment is standard with the DELTA VFD007L21A, however using an optional external braking resistor will allow enhanced deceleration control in the event of rapid stopping requirements. The DELTA VFD007L21A has made improvements in several areas over previous fixed-speed motor control designs in addition to incorporating adjustable V/f curve and automatic torque boost capability within the VFD-L series.

The DELTA VFD007L21A provides essential motor control functions common to the entire drive system, and is a critical component of the power conversion path, directly affecting the proper, normal operation of the overall motor drive system. One DELTA VFD007L21A AC Motor Drive is required per motor depending on the desired speed control level.

For enhanced stopping performance applications, the DELTA VFD007L21A AC Motor Drive supports DC injection braking functionality integrated within the unit. In addition to standard coast-to-stop operation, the braking configuration also performs automatic DC injection during deceleration. The DELTA VFD007L21A braking configuration executes stopping using the internal circuitry specified in the drive parameters.

The VFD007L21A DELTA AC Motor Drive may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
DELTA VFD007L21A AC Motor Drive Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
DELTA VFD007L21A AC Motor Drive Specs

General

  • Manufacturer DELTA
  • Model VFD007L21A
  • Condition New Original ready stock
  • Product Family VFD002L21B,VFD007L21B
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Conveyor Systems: Controls simple transport bands in logistics and food processing.
  • HVAC Infrastructure: Regulates small commercial fan and pump operations.
  • Woodworking Machinery: Powers basic sanders, drills, and cutting tables.
  • Process Lines: Manages precise automated speed adjustments to improve factory line throughput.
  • Power Source Compatibility: Features flexible single-phase 200–240 VAC power input terminals (R/L1, S/L2), with structural tolerance allowing 3-phase incoming power across R/L1, S/L2, and T/L3.
  • Motor Interoperability: Pairs directly with standard 3-phase induction motors up to 1 HP / 4.2 A continuous output.
  • Hardware Integration: Includes a built-in DIN rail mount chassis for fast, tools-free electrical enclosure installation.
  • Modbus Communication: Integrates an onboard RS-485 serial interface for linking to external PLCs or local monitoring networks. (Note: Never connect standard telecom lines to this port, as permanent damage will occur.)
  • Built-in EMI Filter: Supplies integrated suppression to reduce local electromagnetic interference and maintain clean facility power.
  • Electronic Protections: Safeguards against short circuits, overcurrent, overvoltage, undervoltage, overheating, and ground faults.
  • Installation Constraints: Must be installed clear of high heat, direct sunlight, corrosive gases, and airborne metallic dust.
  • Residual Charge Warning: DC-link capacitors hold dangerous voltage for up to 10 minutes after disconnecting mains power.
Description
The DELTA VFD007L21A AC Motor Drive is a compact, cost-effective variable frequency drive from Delta's VFD-L series, engineered to deliver reliable motor control for low-power applications. The DELTA VFD007L21A AC Motor Drive features a rated output power of 0.75 kW (1 HP) with an output current of 4.2 A, supporting single-phase or three-phase 230 VAC input configurations. This model operates with a V/Hz scalar control method, offering an output frequency range from 1.0 Hz up to 400 Hz and a carrier frequency adjustable up to 10 kHz. The DELTA VFD007L21A AC Motor Drive incorporates an adjustable V/f curve, automatic torque boost, and slip compensation functions to maintain stable motor performance under varying load conditions. Additionally, the unit comes with a built-in EMI filter to suppress electromagnetic interference and ensure compliance with CE directives, while comprehensive protection mechanisms—including overcurrent, overvoltage, overheating, and an electronic thermal overload relay—safeguard both the drive and the connected motor during continuous operation.

The DELTA VFD007L21A AC Motor Drive is specifically designed to address the challenge of achieving smooth, energy-efficient speed regulation in small-scale machinery where precise vector control is not required but cost-effectiveness and ease of use are paramount. It solves the problem of excessive energy consumption and mechanical wear caused by fixed-speed operation in light industrial equipment, enabling users to adjust motor speed dynamically to match process demands. By integrating DC injection braking and eliminating the need for complex closed-loop feedback systems, the DELTA VFD007L21A AC Motor Drive simplifies the control architecture while still providing adequate stopping torque and operational reliability for intermittent-duty applications.

For installation and integration, the DELTA VFD007L21A AC Motor Drive supports panel-mount deployment and features a built-in RS-485 MODBUS communication interface with baud rates up to 9600 bps, allowing straightforward connection to PLCs and supervisory control systems for basic automation networks. This communication capability enables remote parameter monitoring and simple frequency command integration, reducing wiring complexity in small-scale control systems. Users should ensure proper panel ventilation and adhere to the specified temperature limits during installation to maintain the longevity of the DELTA VFD007L21A AC Motor Drive.
Alternative Names
VFD007L2IA VFDOO7L21A VFD002L11A VFD002L11B VFD002L21A VFD002L21B VFD007L21B VFD015L23A
Technical notes
The VFD007L21A AC motor drive operates within a frequency range of 1.0 to 400 Hz, employs adjustable V/f control, and features automatic torque boost and slip compensation to ensure precise motor speed regulation and stable speed control under various load conditions. This VFD007L21A AC motor drive is specifically designed to address the challenges of precise speed control, high energy consumption, and mechanical wear during the startup of low-power industrial machinery.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What operational problems does the DELTA VFD007L21A AC Motor Drive solve?
The DELTA VFD007L21A AC Motor Drive is designed to reduce high inrush currents that can cause excessive stress on motors and mechanical components during startup. It also features a built-in EMI filter that minimizes electromagnetic interference, helping prevent disruptions to nearby electronic equipment and control systems.
How does the DELTA VFD007L21A improve machine performance?
By providing smooth acceleration and deceleration control, the DELTA VFD007L21A helps eliminate mechanical shocks, sudden jerks, and unnecessary wear on equipment. In conveyor applications, for example, it prevents abrupt starts and stops that could lead to product spillage or unstable material handling.
Which industries commonly use the DELTA VFD007L21A AC Motor Drive?
The DELTA VFD007L21A is widely used in small-scale industrial automation applications, including material handling conveyor systems, woodworking machinery, wire drawing equipment, textile production machines, and HVAC pumps and fans. Its compact design and reliable performance make it suitable for a broad range of light-duty motor control tasks.
What precautions should be followed during wiring and installation?
Installers must ensure that the AC input power supply is connected only to the designated input terminals. Connecting the mains power directly to the motor output terminals (U/T1, V/T2, and W/T3) can cause permanent damage to the DELTA VFD007L21A AC Motor Drive and should be strictly avoided.