new 1PC Delta inverter VFD004EL43A 0.4KW 380V VFD-EL

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What Is the Delta VFD004EL43A 0.4KW 380V VFD-EL?

The Delta VFD004EL43A is a micro AC variable frequency drive from Delta's entry-level VFD-EL series, purpose-built for controlling 0.4 kW (0.5 HP) three-phase induction motors on a 380V three-phase supply. This compact VFD packs sensorless vector control, a built-in PID loop, and an RS-485 Modbus interface into a DIN-friendly form factor suited for OEM machine panels. The removable KPV-CE01 digital keypad allows parameter upload/download across multiple drives, and the drive supports multi-speed step control via external terminals — a practical feature for conveyor indexing, simple positioning, and multi-stage pump sequences.

In short: If your small three-phase motor needs variable-speed control on a 380V mains, the Delta VFD004EL43A is a proven workhorse — genuine new unit, ready to ship from koeed.com.

Technical Specifications

Specifications above are based on the product identification. For full derating curves, EMC installation guidelines, and detailed parameter lists, refer to the Delta VFD-EL user manual or contact our support team for technical documentation.

Where the VFD004EL43A Is Typically Applied

• Compact Conveyors: Speed ramping and jog control for small belt or roller conveyors in packaging and assembly machinery
• Pump Speed Regulation: PID-based constant-pressure control for water booster pumps and circulating pumps in Siemens-based BMS panels
• Cooling Fan Drives: Variable-speed control for cooling tower fans, condenser fans, and ventilation blowers with energy savings at partial load
• Textile Machinery: Precise low-speed winding and unwinding tension control in yarn processing and weaving equipment
• Mixing and Agitation: Multi-speed stirring and blending operations in chemical or food processing tanks

Frequently Asked Questions

Can I run this VFD from a single-phase 220V supply?

No. The VFD004EL43A is a 380V three-phase input drive and requires all three phases for proper operation. The DC bus capacitors and rectifier stage are designed for three-phase 380V, and connecting single-phase 220V will result in a DC bus undervoltage fault. If you have only single-phase power available, consider a single-phase-input VFD from Mitsubishi or Yaskawa's single-phase-compatible series. Contact us with your power supply details and we can recommend the right drive.

How do I transfer parameters from my old VFD004EL43A to this replacement?

The removable KPV-CE01 keypad supports parameter copy. On your old drive (if still powered), insert the keypad, navigate to parameter 00-02, set it to 1 to upload parameters to the keypad memory. On the new drive, insert the same keypad, set 00-02 to 2 to download the stored parameters. This copies all settings including motor data, acceleration/deceleration times, and multi-speed presets in seconds — no re-entering parameters manually.

What does the "OC" fault code mean and how do I fix it?

OC (Over-Current) trips when the output current exceeds 200% of the rated current. Common causes: (1) acceleration time too short for the load inertia — increase parameter 01-12 (accel time 1), (2) motor cable short circuit or insulation breakdown — megger-test the motor and cables, (3) V/F curve set too aggressively — reduce torque boost (parameter 07-02). Always resolve the root cause before resetting the fault, otherwise repeated OC trips can damage the IGBT output stage.

Do you stock the matching braking resistor for this drive?

The VFD004EL43A supports an external braking resistor on terminals B1 and B2 for applications requiring rapid deceleration or overhauling loads. We can supply compatible braking resistors — send your deceleration time requirement and load inertia details to Moritta@KOEED.COM and our team will recommend the correct resistor wattage and ohmic value for your application.

Can this drive communicate with my Allen-Bradley PLC?

Yes, the VFD004EL43A has native RS-485 Modbus RTU. For Allen-Bradley PLCs without a native Modbus port, you can use a ProSoft or Anybus gateway module to bridge Modbus RTU to EtherNet/IP or ControlNet. For Omron and Schneider PLCs with built-in Modbus, direct wiring to the RS-485 terminals is straightforward. Our team can assist with communication parameter settings.

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