VFD007EL21A Delta AC Drive Micro Type 0.75 kW

VFD007EL21A Delta VFD-EL Micro Drive for Single-Phase Applications

Product Introduction

The Delta VFD007EL21A belongs to the VFD-EL series, a multiple-function micro drive lineup from Delta. This model accepts a nominal input of 208 to 240 Volts AC with a range of 200 to 240 Volts AC. It operates with single-phase input and delivers a three-phase output of 4.2 Amps of continuous current. The drive supports a maximum output frequency of 600 Hertz, making it suitable for a wide variety of speed control applications. Furthermore, its built-in controls simplify operation, while the integrated EMI filter ensures compliance with electromagnetic compatibility standards.

Technical Specifications

This section details the core technical parameters of the Delta VFD007EL21A drive. The input voltage range is broad, accommodating 200 to 240 Volts AC. Its continuous current rating is 4.2 Amps, and the power rating is 1 HP (0.75 kW). The control method relies on V/Hz (scalar) control, which provides reliable performance for general-purpose motor speed regulation. Additionally, the braking system combines DC injection and dynamic braking, with the dynamic braking transistor already included inside the unit.

The built-in keypad gives users immediate access to drive settings and status monitoring. High-precision current detection enhances protection against overloads. This VFD-EL drive also features a high switching frequency and low noise operation. Meanwhile, the IP20 enclosure rating offers protection against solid objects larger than 12mm, making it suitable for control cabinet installation. The unit's maximum output frequency reaches 600 Hz, enabling high-speed motor operation when required.

Mechanical and Environmental Parameters

Physical dimensions play a vital role in proper system integration. The VFD007EL21A has a compact footprint with a height of 6.86 inches, a width of 2.83 inches, and a depth of 5.36 inches. Its frame size is classified as "A," which allows for side-by-side installation thanks to the easy DC bus sharing design. The gross weight of this unit is approximately 1.8 kg.

Furthermore, the drive operates efficiently in ambient temperatures ranging from -10°C to +50°C. Storage temperature extends from -20°C to +60°C. The relative humidity should remain below 90% (non-condensing). Additionally, vibration resistance is rated at 1G for frequencies under 60Hz, ensuring stable performance in industrial environments. This combination of compact size and robust environmental tolerance makes the Delta VFD007EL21A a versatile choice for many facilities.

Installation Guidelines

Installing the VFD-EL series drive requires careful attention to mounting and wiring. First, ensure the mounting surface is flat and vertical for optimal heat dissipation. Use the provided mounting holes on the frame size A chassis to secure the unit. Maintain sufficient clearance around the drive—at least 50mm on both sides and 100mm above and below—for adequate airflow.

When wiring the Delta VFD007EL21A, connect the single-phase input power to terminals R and S. The motor leads should connect to terminals U, V, and W. For safety, ground the unit properly using the designated grounding terminal. Moreover, install the recommended fuses or circuit breakers on the input side to protect against short circuits. The built-in RFI switch can be adjusted to reduce leakage current, especially in sensitive installations. After wiring, power up the unit and use the built-in keypad to set the motor parameters before starting the motor.

Packaging List

The package for the VFD007EL21A includes the following items:

• Delta VFD-EL series AC drive unit (1 pc)

• Built-in keypad (already attached to the drive)

• User manual (quick start guide)

• Mounting screws and washers (set)

• Cable tie clips for wiring organization

• Plastic protective covers for unused terminals

Note: Cables, motors, and external braking resistors are not included in the package.

Shipping Information

We ship all orders for the Delta VFD007EL21A via international express carriers. We primarily use FedEx, UPS, and DHL to ensure fast and reliable delivery. Once we dispatch the shipment, we will provide tracking numbers. Standard delivery usually takes 3-5 business days, depending on your location. For urgent projects, expedited shipping options are also available upon request.

Frequently Asked Questions (FAQ)

Q1: What is the input voltage range for the VFD007EL21A drive?
A1: The Delta VFD007EL21A accepts a single-phase input voltage from 200V to 240V AC. Its nominal input is 208-240V AC, making it suitable for standard single-phase power supplies in many regions.

Q2: Can this VFD-EL drive convert single-phase input to three-phase output?
A2: Yes, the VFD007EL21A takes single-phase input power and provides a three-phase output. This feature makes it ideal for operating three-phase motors in locations where only single-phase power is available.

Q3: Does the Delta VFD007EL21A include a built-in braking resistor?
A3: The drive includes a dynamic braking transistor, but it does not come with an external braking resistor. You will need to purchase and connect a separate resistor if rapid deceleration or high-inertia loads are required.

Q4: What is the maximum output frequency of this VFD-EL drive?
A4: The Delta VFD007EL21A can reach a maximum output frequency of 600 Hertz. This allows for very high-speed motor operation, significantly above the standard 50/60Hz mains frequency.

Q5: How do I reset the drive after an overload fault?
A5: To reset the VFD007EL21A after a fault, press the "STOP/RESET" key on the built-in keypad. Alternatively, you can cycle the input power off and on. Ensure you resolve the fault condition, such as motor blockage or overcurrent, before restarting.